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Cheng Z, Morgenstern M, Henning S, Zhang B, Roberts GC, Fraund M, Marcus MA, Lata NN, Fialho P, Mazzoleni L, Wehner B, Mazzoleni C, China S. Cloud condensation nuclei activity of internally mixed particle populations at a remote marine free troposphere site in the North Atlantic Ocean. Sci Total Environ 2023; 904:166865. [PMID: 37690758 DOI: 10.1016/j.scitotenv.2023.166865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/12/2023]
Abstract
This study reports results from research conducted at the Observatory of Mount Pico (OMP), 2225 m above mean sea level on Pico Island in the Azores archipelago in June and July 2017. We investigated the chemical composition, mixing state, and cloud condensation nuclei (CCN) activities of long-range transported free tropospheric (FT) particles. FLEXible PARTicle Lagrangian particle dispersion model (FLEXPART) simulations reveal that most air masses that arrived at the OMP during the sampling period originated in North America and were highly aged (average plume age > 10 days). We probed size-resolved chemical composition, mixing state, and hygroscopicity parameter (κ) of individual particles using computer-controlled scanning electron microscopy with an energy-dispersive X-ray spectrometer (CCSEM-EDX). Based on the estimated individual particle mass from elemental composition, we calculated the mixing state index, χ. During our study, FT particle populations were internally mixed (χ of samples are between 53 % and 87 %), owing to the long atmospheric aging time. We used data from a miniature Cloud Condensation Nucleus Counter (miniCCNC) to derive the hygroscopicity parameter, κCCNC. Combining κCCNC and FLEXPART, we found that air masses recirculated above the North Atlantic Ocean with lower mean altitude had higher κCCNC due to the higher contribution of sea salt particles. We used CCSEM-EDX and phase state measurements to predict single-particle κ (κCCSEM-EDX) values, which overlap with the lower range of κCCNC measured below 0.15 % SS. Therefore, CCSEM-EDX measurements can be useful in predicting the lower bound of κ, which can be used in climate models to predict CCN activities, especially in remote locations where online CCN measurements are unavailable.
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Affiliation(s)
- Zezhen Cheng
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory (PNNL), Richland, WA 99352, USA
| | - Megan Morgenstern
- Atmospheric Sciences Program, Michigan Technological University, Houghton, MI 49921, USA
| | - Silvia Henning
- Leibniz Institute for Tropospheric Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Bo Zhang
- National Institute of Aerospace, Hampton, VA 23666, USA
| | - Gregory C Roberts
- Centre National de Recherches Météorologiques, Université de Toulouse, Météo-France, CNRS, Toulouse 31400, France; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92037, USA
| | | | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nurun Nahar Lata
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory (PNNL), Richland, WA 99352, USA
| | - Paulo Fialho
- Institute of Volcanology and Risk Assessment - IVAR, Rua da Mãe de Deus, 9500-321 Ponta Delgada, Portugal
| | - Lynn Mazzoleni
- Atmospheric Sciences Program, Michigan Technological University, Houghton, MI 49921, USA
| | - Birgit Wehner
- Leibniz Institute for Tropospheric Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Claudio Mazzoleni
- Atmospheric Sciences Program, Michigan Technological University, Houghton, MI 49921, USA
| | - Swarup China
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory (PNNL), Richland, WA 99352, USA.
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Rowley MC, Nico PS, Bone SE, Marcus MA, Pegoraro EF, Castanha C, Kang K, Bhattacharyya A, Torn MS, Peña J. Association between soil organic carbon and calcium in acidic grassland soils from Point Reyes National Seashore, CA. Biogeochemistry 2023; 165:91-111. [PMID: 37637456 PMCID: PMC10457245 DOI: 10.1007/s10533-023-01059-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 06/14/2023] [Indexed: 08/29/2023]
Abstract
Organo-mineral and organo-metal associations play an important role in the retention and accumulation of soil organic carbon (SOC). Recent studies have demonstrated a positive correlation between calcium (Ca) and SOC content in a range of soil types. However, most of these studies have focused on soils that contain calcium carbonate (pH > 6). To assess the importance of Ca-SOC associations in lower pH soils, we investigated their physical and chemical interaction in the grassland soils of Point Reyes National Seashore (CA, USA) at a range of spatial scales. Multivariate analyses of our bulk soil characterisation dataset showed a strong correlation between exchangeable Ca (CaExch; 5-8.3 c.molc kg-1) and SOC (0.6-4%) content. Additionally, linear combination fitting (LCF) of bulk Ca K-edge X-ray absorption near-edge structure (XANES) spectra revealed that Ca was predominantly associated with organic carbon across all samples. Scanning transmission X-ray microscopy near-edge X-ray absorption fine structure spectroscopy (STXM C/Ca NEXAFS) showed that Ca had a strong spatial correlation with C at the microscale. The STXM C NEXAFS K-edge spectra indicated that SOC had a higher abundance of aromatic/olefinic and phenolic C functional groups when associated with Ca, relative to C associated with Fe. In regions of high Ca-C association, the STXM C NEXAFS spectra were similar to the spectrum from lignin, with moderate changes in peak intensities and positions that are consistent with oxidative C transformation. Through this association, Ca thus seems to be preferentially associated with plant-like organic matter that has undergone some oxidative transformation, at depth in acidic grassland soils of California. Our study highlights the importance of Ca-SOC complexation in acidic grassland soils and provides a conceptual model of its contribution to SOC preservation, a research area that has previously been unexplored. Supplementary Information The online version contains supplementary material available at 10.1007/s10533-023-01059-2.
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Affiliation(s)
- Mike C. Rowley
- Department of Geography, University of Zurich, Zurich, Switzerland
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
- University California Davis, Davis, USA
| | - Peter S. Nico
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
| | - Sharon E. Bone
- Stanford Synchrotron Radiation Lightsource, Menlo Park, USA
| | | | - Elaine F. Pegoraro
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
| | - Cristina Castanha
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
| | | | | | - Margaret S. Torn
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
| | - Jasquelin Peña
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
- University California Davis, Davis, USA
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Meshot ER, Baker A, Malone D, Hayes S, Hamza H, Wang C, Marcus MA, Lepró X. High-Resolution X-ray Spectromicroscopy Reveals Process-Structure Correlations in sub-5-μm Diameter Carbon Nanotube-Polymer Composite Dry-Spun Yarns. ACS Nano 2023. [PMID: 37186946 DOI: 10.1021/acsnano.3c01537] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A persistent lack of detailed and quantitative structural analysis of these hierarchical carbon nanotube (CNT) ensembles precludes establishing processing-structure-property relationships that are essential to enhance macroscale performance (e.g., in mechanical, electrical, thermal applications). Here, we use scanning transmission X-ray microscopy (STXM) to analyze the hierarchical, twisted morphology of dry-spun CNT yarns and their composites, quantifying key structural characteristics such as density, porosity, alignment, and polymer loading. As the yarn twist density increases (15,000 to 150,000 turns per meter), the yarn diameter decreased (4.4-1.4 μm) and density increased (0.55-1.26 g·cm-3), as intuitively expected. Yarn density, ρ, ubiquitously scaled with diameter d according to ρ ∼ d-2 for all parameters studied here. Spectromicroscopy probes with 30 nm resolution and elemental specificity were employed to analyze the radial and longitudinal distribution of the oxygen-containing polymer content (∼30% weight fraction), demonstrating nearly perfect filling of the voids between CNTs with a vapor-phase polymer coating and cross-linking process. These quantitative correlations highlight the intimate connections between processing conditions and yarn structure with important implications for translating the nanoscale properties of CNTs to the macroscale.
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Affiliation(s)
- Eric R Meshot
- Materials Engineering Division, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Alexander Baker
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Daniel Malone
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Sean Hayes
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Haley Hamza
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Cheng Wang
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Xavier Lepró
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
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Guo W, Dun C, Marcus MA, Venturi V, Gainsforth Z, Yang F, Feng X, Viswanathan V, Urban JJ, Yu C, Zhang Q, Guo J, Qiu J. The Emerging Layered Hydroxide Plates with Record Thickness for Enhanced High-Mass-Loading Energy Storage. Adv Mater 2023; 35:e2211603. [PMID: 36802104 DOI: 10.1002/adma.202211603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/09/2023] [Indexed: 05/12/2023]
Abstract
The past decade has witnessed the development of layered-hydroxide-based self-supporting electrodes, but the low active mass ratio impedes its all-around energy-storage applications. Herein, the intrinsic limit of layered hydroxides is broken by engineering F-substituted β-Ni(OH)2 (Ni-F-OH) plates with a sub-micrometer thickness (over 700 nm), producing a superhigh mass loading of 29.8 mg cm-2 on the carbon substrate. Theoretical calculation and X-ray absorption spectroscopy analysis demonstrate that Ni-F-OH shares the β-Ni(OH)2 -like structure with slightly tuned lattice parameters. More interestingly, the synergy modulation of NH4 + and F- is found to serve as the key enabler to tailor these sub-micrometer-thickness 2D plates thanks to the modification effects on the (001) plane surface energy and local OH- concentration. Guided by this mechanism, the superstructures of bimetallic hydroxides and their derivatives are further developed, revealing they are a versatile family with great promise. The tailored ultrathick phosphide superstructure achieves a superhigh specific capacity of 7144 mC cm-2 and a superior rate capability (79% at 50 mA cm-2 ). This work highlights a multiscale understanding of how exceptional structure modulation happens in low-dimensional layered materials. The as-built unique methodology and mechanisms will boost the development of advanced materials to better meet future energy demands.
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Affiliation(s)
- Wei Guo
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chaochao Dun
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Victor Venturi
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15232, USA
| | - Zack Gainsforth
- Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Feipeng Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Xuefei Feng
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Venkatasubramanian Viswanathan
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15232, USA
- Department of Physics, Carnegie Mellon University, Pittsburgh, PA, 15232, USA
| | - Jeffrey J Urban
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chang Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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Persson I, Laval H, Chambon S, Bonfante G, Hirakawa K, Wantz G, Watts B, Marcus MA, Xu X, Ying L, Lakhwani G, Andersson MR, Cairney JM, Holmes NP. Sub-4 nm mapping of donor-acceptor organic semiconductor nanoparticle composition. Nanoscale 2023; 15:6126-6142. [PMID: 36939532 DOI: 10.1039/d3nr00839h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We report, for the first time, sub-4 nm mapping of donor : acceptor nanoparticle composition in eco-friendly colloidal dispersions for organic electronics. Low energy scanning transmission electron microscopy (STEM) energy dispersive X-ray spectroscopy (EDX) mapping has revealed the internal morphology of organic semiconductor donor : acceptor blend nanoparticles at the sub-4 nm level. A unique element was available for utilisation as a fingerprint element to differentiate donor from acceptor material in each blend system. Si was used to map the location of donor polymer PTzBI-Si in PTzBI-Si:N2200 nanoparticles, and S (in addition to N) was used to map donor polymer TQ1 in TQ1:PC71BM nanoparticles. For select material blends, synchrotron-based scanning transmission X-ray microscopy (STXM), was demonstrated to remain as the superior chemical contrast technique for mapping organic donor : acceptor morphology, including for material combinations lacking a unique fingerprint element (e.g. PTQ10:Y6), or systems where the unique element is in a terminal functional group (unsaturated, dangling bonds) and can hence be easily damaged under the electron beam, e.g. F on PTQ10 donor polymer in the PTQ10:IDIC donor : acceptor blend. We provide both qualitative and quantitative compositional mapping of organic semiconductor nanoparticles with STEM EDX, with sub-domains resolved in nanoparticles as small as 30 nm in diameter. The sub-4 nm mapping technology reported here shows great promise for the optimisation of organic semiconductor blends for applications in organic electronics (solar cells and bioelectronics) and photocatalysis, and has further applications in organic core-shell nanomedicines.
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Affiliation(s)
- Ingemar Persson
- Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia.
- Thin Film Physics, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
| | - Hugo Laval
- University of Bordeaux, IMS, CNRS, UMR 5218, Bordeaux INP, ENSCBP, F-33405 Talence, France
| | - Sylvain Chambon
- LIMMS/CNRS-IIS (IRL2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Gwenael Bonfante
- LIMMS/CNRS-IIS (IRL2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Kazuhiko Hirakawa
- LIMMS/CNRS-IIS (IRL2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Guillaume Wantz
- University of Bordeaux, IMS, CNRS, UMR 5218, Bordeaux INP, ENSCBP, F-33405 Talence, France
| | | | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Xiaoxue Xu
- School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW 2007, Australia
| | - Lei Ying
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Girish Lakhwani
- ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute, Faculty of Science, University of Sydney, Sydney, NSW 2006, Australia
| | - Mats R Andersson
- Flinders Institute for Nanoscale Science and Technology, Flinders University, Adelaide, South Australia 5042, Australia
| | - Julie M Cairney
- Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia.
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW 2006, Australia
| | - Natalie P Holmes
- Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia.
- The University of Sydney Nano Institute, Faculty of Science, University of Sydney, Sydney, NSW 2006, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW 2006, Australia
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Marcus MA. Information content of and the ability to reconstruct dichroic X-ray tomography and laminography. Opt Express 2022; 30:39445-39465. [PMID: 36298897 DOI: 10.1364/oe.462410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/28/2022] [Indexed: 06/16/2023]
Abstract
Dichroic tomography is a 3D imaging technique in which the polarization of the incident beam is used to induce contrast due to the magnetization or orientation of a sample. The aim is to reconstruct not only the optical density but the dichroism of the sample. The theory of dichroic tomographic and laminographic imaging in the parallel-beam case is discussed as well as the problem of reconstruction of the sample's optical properties. The set of projections resulting from a single tomographic/laminographic measurement is not sufficient to reconstruct the magnetic moment for magnetic circular dichroism unless additional constraints are applied or data are taken at two or more tilt angles. For linear dichroism, three polarizations at a common tilt angle are insufficient for unconstrained reconstruction. However, if one of the measurements is done at a different tilt angle than the other, or the measurements are done at a common polarization but at three distinct tilt angles, then there is enough information to reconstruct without constraints. Possible means of applying constraints are discussed. Furthermore, it is shown that for linear dichroism, the basic assumption that the absorption through a ray path is the integral of the absorption coefficient, defined on the volume of the sample, along the ray path, is not correct when dichroism or birefringence is strong. This assumption is fundamental to tomographic methods. An iterative algorithm for reconstruction of linear dichroism is demonstrated on simulated data.
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Guo W, Dun C, Yu C, Song X, Yang F, Kuang W, Xie Y, Li S, Wang Z, Yu J, Fu G, Guo J, Marcus MA, Urban JJ, Zhang Q, Qiu J. Mismatching integration-enabled strains and defects engineering in LDH microstructure for high-rate and long-life charge storage. Nat Commun 2022; 13:1409. [PMID: 35301288 PMCID: PMC8931012 DOI: 10.1038/s41467-022-28918-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 02/18/2022] [Indexed: 11/30/2022] Open
Abstract
Layered double hydroxides (LDH) have been extensively investigated for charge storage, however, their development is hampered by the sluggish reaction dynamics. Herein, triggered by mismatching integration of Mn sites, we configured wrinkled Mn/NiCo-LDH with strains and defects, where promoted mass & charge transport behaviors were realized. The well-tailored Mn/NiCo-LDH displays a capacity up to 518 C g−1 (1 A g−1), a remarkable rate performance (78%@100 A g−1) and a long cycle life (without capacity decay after 10,000 cycles). We clarified that the moderate electron transfer between the released Mn species and Co2+ serves as the pre-step, while the compressive strain induces structural deformation with promoted reaction dynamics. Theoretical and operando investigations further demonstrate that the Mn sites boost ion adsorption/transport and electron transfer, and the Mn-induced effect remains active after multiple charge/discharge processes. This contribution provides some insights for controllable structure design and modulation toward high-efficient energy storage. Layered double hydroxides (LDH) are ideal for charge storage, however, the sluggish reaction dynamics are obstacle to their development. Here, triggered by mismatching integration of Mn sites, the authors configure wrinkled Mn/NiCo-LDH with strains and defects, where promoted mass & charge transport behaviors are realized.
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Affiliation(s)
- Wei Guo
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.,School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xian, 710072, China
| | - Chaochao Dun
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chang Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
| | - Xuedan Song
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Feipeng Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wenzheng Kuang
- Department of Applied and Computational Mathematics and Statistics, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Yuanyang Xie
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Shaofeng Li
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Zhao Wang
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinhe Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Guosheng Fu
- Department of Applied and Computational Mathematics and Statistics, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jeffrey J Urban
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xian, 710072, China.
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China. .,College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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Schoeppler V, Stier D, Best RJ, Song C, Turner J, Savitzky BH, Ophus C, Marcus MA, Zhao S, Bustillo K, Zlotnikov I. Crystallization by Amorphous Particle Attachment: On the Evolution of Texture. Adv Mater 2021; 33:e2101358. [PMID: 34337782 DOI: 10.1002/adma.202101358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 06/01/2021] [Indexed: 06/13/2023]
Abstract
Crystallization by particle attachment (CPA) is a gradual process where each step has its own thermodynamic and kinetic constrains defining a unique pathway of crystal growth. An important example is biomineralization of calcium carbonate through amorphous precursors that are morphed into shapes and textural patterns that cannot be envisioned by the classical monomer-by-monomer approach. Here, a mechanistic link between the collective kinetics of mineral deposition and the emergence of crystallographic texture is established. Using the prismatic ultrastructure in bivalve shells as a model, a fundamental leap is made in the ability to analytically describe the evolution of form and texture of biological mineralized tissues and to design the structure and crystallographic properties of synthetic materials formed by CPA.
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Affiliation(s)
- Vanessa Schoeppler
- B CUBE - Center for Molecular Bioengineering, Technische Universität Dresden, 01307, Dresden, Germany
- Department of Physics, University of California, Berkeley, CA, 94720, USA
| | - Deborah Stier
- B CUBE - Center for Molecular Bioengineering, Technische Universität Dresden, 01307, Dresden, Germany
| | - Richard J Best
- B CUBE - Center for Molecular Bioengineering, Technische Universität Dresden, 01307, Dresden, Germany
| | - Chengyu Song
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - John Turner
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Benjamin H Savitzky
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Colin Ophus
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Shiteng Zhao
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | - Karen Bustillo
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Igor Zlotnikov
- B CUBE - Center for Molecular Bioengineering, Technische Universität Dresden, 01307, Dresden, Germany
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Straub MD, Ouellette ET, Boreen MA, Branson JA, Ditter A, Kilcoyne ALD, Lohrey TD, Marcus MA, Paley M, Ramirez J, Shuh DK, Minasian SG, Arnold J. Thorium amidates function as single-source molecular precursors for thorium dioxide. Chem Commun (Camb) 2021; 57:4954-4957. [PMID: 33876158 DOI: 10.1039/d1cc00867f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of four homoleptic thorium(iv) amidate complexes as single-source molecular precursors for thorium dioxide. Each can be sublimed at atmospheric pressure, with the substituents on the amidate ligands significantly impacting their volatility and thermal stability. These complexes decompose via alkene elimination to give ThO2 without need for a secondary oxygen source. ThO2 samples formed from pyrolysis of C-alkyl amidates were found to have higher purity and crystallinity than ThO2 samples formed from C-aryl amidates.
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Affiliation(s)
- Mark D Straub
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - Erik T Ouellette
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - Michael A Boreen
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - Jacob A Branson
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - Alex Ditter
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | | | - Trevor D Lohrey
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | | | - Maria Paley
- University of California, Berkeley, Berkeley, CA 94720, USA.
| | - José Ramirez
- University of California, Berkeley, Berkeley, CA 94720, USA.
| | - David K Shuh
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | | | - John Arnold
- University of California, Berkeley, Berkeley, CA 94720, USA. and Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
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10
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Sun CY, Gránásy L, Stifler CA, Zaquin T, Chopdekar RV, Tamura N, Weaver JC, Zhang JAY, Goffredo S, Falini G, Marcus MA, Pusztai T, Schoeppler V, Mass T, Gilbert PUPA. Crystal nucleation and growth of spherulites demonstrated by coral skeletons and phase-field simulations. Acta Biomater 2021; 120:277-292. [PMID: 32590171 PMCID: PMC7116570 DOI: 10.1016/j.actbio.2020.06.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 01/07/2023]
Abstract
Spherulites are radial distributions of acicular crystals, common in biogenic, geologic, and synthetic systems, yet exactly how spherulitic crystals nucleate and grow is still poorly understood. To investigate these processes in more detail, we chose scleractinian corals as a model system, because they are well known to form their skeletons from aragonite (CaCO3) spherulites, and because a comparative study of crystal structures across coral species has not been performed previously. We observed that all 12 diverse coral species analyzed here exhibit plumose spherulites in their skeletons, with well-defined centers of calcification (CoCs), and crystalline fibers radiating from them. In 7 of the 12 species, we observed a skeletal structural motif not observed previously: randomly oriented, equant crystals, which we termed "sprinkles". In Acropora pharaonis, these sprinkles are localized at the CoCs, while in 6 other species, sprinkles are either layered at the growth front (GF) of the spherulites, or randomly distributed. At the nano- and micro-scale, coral skeletons fill space as much as single crystals of aragonite. Based on these observations, we tentatively propose a spherulite formation mechanism in which growth front nucleation (GFN) of randomly oriented sprinkles, competition for space, and coarsening produce spherulites, rather than the previously assumed slightly misoriented nucleations termed "non-crystallographic branching". Phase-field simulations support this mechanism, and, using a minimal set of thermodynamic parameters, are able to reproduce all of the microstructural variation observed experimentally in all of the investigated coral skeletons. Beyond coral skeletons, other spherulitic systems, from aspirin to semicrystalline polymers and chocolate, may also form according to the mechanism for spherulite formation proposed here. STATEMENT OF SIGNIFICANCE: Understanding the fundamental mechanisms of spherulite nucleation and growth has broad ranging applications in the fields of metallurgy, polymers, food science, and pharmaceutical production. Using the skeletons of reef-building corals as a model system for investigating these processes, we propose a new spherulite growth mechanism that can not only explain the micro-structural diversity observed in distantly related coral species, but may point to a universal growth mechanism in a wide range of biologically and technologically relevant spherulitic materials systems.
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Affiliation(s)
- Chang-Yu Sun
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA; Materials Science Program, University of Wisconsin, Madison, WI 53706, USA
| | - László Gránásy
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, PO Box 49, 1525 Budapest, Hungary
| | - Cayla A Stifler
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA
| | - Tal Zaquin
- University of Haifa, Marine Biology Department, Mt. Carmel, Haifa 31905, Israel
| | - Rajesh V Chopdekar
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nobumichi Tamura
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - James C Weaver
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Jun A Y Zhang
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA
| | - Stefano Goffredo
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Selmi 3, I-40126 Bologna, Italy; Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032 Fano, Pesaro Urbino, Italy
| | - Giuseppe Falini
- Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - University of Bologna, Via Selmi 2, 40126 Bologna, Italy; Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032 Fano, Pesaro Urbino, Italy
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Tamás Pusztai
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, PO Box 49, 1525 Budapest, Hungary
| | - Vanessa Schoeppler
- B CUBE-Center for Molecular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany
| | - Tali Mass
- University of Haifa, Marine Biology Department, Mt. Carmel, Haifa 31905, Israel
| | - Pupa U P A Gilbert
- Department of Physics, University of Wisconsin, Madison, WI 53706, USA; Departments of Chemistry, Geoscience, Materials Science, University of Wisconsin, Madison, WI 53706, USA.
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11
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Jiang W, Spurgeon SR, Matthews BE, Battu AK, China S, Varga T, Devaraj A, Kautz EJ, Marcus MA, Reilly DD, Luscher WG. Carbonaceous deposits on aluminide coatings in tritium-producing assemblies. Nuclear Materials and Energy 2020. [DOI: 10.1016/j.nme.2020.100797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Cramer S, Marcus MA, Ramkissoon S, Szabo S, Pressey JG. Pediatric BRAF (V600E)-Mutated Pancreatic Acinar Cell Carcinoma With Complete and Durable Response to Dabrafenib and Trametinib. JCO Precis Oncol 2020; 4:801-805. [PMID: 35050754 DOI: 10.1200/po.19.00343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
| | | | - Shakti Ramkissoon
- Foundation Medicine, Morrisville, NC.,Wake Forest Comprehensive Cancer Center and Department of Pathology, Winston-Salem, NC.,Wake Forest University School of Medicine, Winston-Salem, NC
| | - Sara Szabo
- Cincinnati Children's Hospital, Cincinnati, OH
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13
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Abstract
Linear dichroism is an important tool to characterize the transmission matrix and determine the crystal or orbital orientation in a material. In order to achieve high-resolution mapping of transmission properties, the linear-dichroism scattering model in ptychographic imaging is introduced, and an efficient two-stage reconstruction algorithm is developed. Using the proposed algorithm on a uniaxial material, the dichroic transmission matrix can be recovered without an analyzer by using ptychography measurements with as few as three different polarization angles, with the help of an empty region to remove phase ambiguities.
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14
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Brett AS, Azizzadeh N, Miller EM, Collins RJ, Seegars MB, Marcus MA. Assessment of Clinical Conditions Associated With Splenic Infarction in Adult Patients. JAMA Intern Med 2020; 180:1125-1128. [PMID: 32658244 PMCID: PMC7358974 DOI: 10.1001/jamainternmed.2020.2168] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This case series examines the clinical conditions associated with splenic infarction of adult patients between 2010 and 2015 from computed tomographic imaging scans.
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Affiliation(s)
- Allan S Brett
- Department of Medicine, University of South Carolina School of Medicine, Columbia
| | - Neda Azizzadeh
- Department of Medicine, University of South Carolina School of Medicine, Columbia
| | - Emily M Miller
- Department of Medicine, University of South Carolina School of Medicine, Columbia.,Now with Division of Hematology/Oncology, University of Tennessee Health Science Center, Memphis
| | - Robert J Collins
- Department of Medicine, University of South Carolina School of Medicine, Columbia.,Now with South Carolina Oncology Associates, Columbia
| | - Mary B Seegars
- Department of Medicine, University of South Carolina School of Medicine, Columbia.,Now with Division of Hematology/Oncology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Matthew A Marcus
- Department of Radiology, University of South Carolina School of Medicine, Columbia
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15
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Dejoie C, Yu Y, Bernardi F, Tamura N, Kunz M, Marcus MA, Huang YL, Zhang C, Eichhorn BW, Liu Z. Potential Control of Oxygen Non-Stoichiometry in Cerium Oxide and Phase Transition Away from Equilibrium. ACS Appl Mater Interfaces 2020; 12:31514-31521. [PMID: 32559058 DOI: 10.1021/acsami.0c08284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cerium oxide (ceria, CeO2) is a technologically important material for energy conversion applications. Its activities strongly depend on redox states and oxygen vacancy concentration. Understanding the functionality of chemical active species and behavior of oxygen vacancy during operation, especially in high-temperature solid-state electrochemical cells, is the key to advance future material design. Herein, the structure evolution of ceria is spatially resolved using bulk-sensitive operando X-ray diffraction and spectroscopy techniques. During water electrolysis, ceria undergoes reduction, and its oxygen non-stoichiometry shows a dependence on the electrochemical current. Cerium local bonding environments vary concurrently to accommodate oxygen vacancy formation, resulting in changes in Ce-O coordination number and Ce3+/Ce4+ redox couple. When reduced enough, a crystallographic phase transition occurs from α to an α' phase with more oxygen vacancies. Nevertheless, the transition behavior is intriguingly different from the one predicted in the standard phase diagram of ceria. This paper demonstrates a feasible means to control oxygen non-stoichiometry in ceria via electrochemical potential. It also sheds light on the mechanism of phase transitions induced by electrochemical potential. For electrochemical systems, effects from a large-scale electrical environment should be taken into consideration, besides effective oxygen partial pressure and temperature.
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Affiliation(s)
- Catherine Dejoie
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, CS 40220, Grenoble Cedex 9 38043, France
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Yi Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Fabiano Bernardi
- Programa de Pós-Graduação em Física, Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, Rio Grande do Sul, Brazil
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Nobumichi Tamura
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Martin Kunz
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Yi-Lin Huang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Chunjuan Zhang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Bryan W Eichhorn
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Zhi Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
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16
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Leemann SC, Liu S, Hexemer A, Marcus MA, Melton CN, Nishimura H, Sun C. Demonstration of Machine Learning-Based Model-Independent Stabilization of Source Properties in Synchrotron Light Sources. Phys Rev Lett 2019; 123:194801. [PMID: 31765214 DOI: 10.1103/physrevlett.123.194801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Synchrotron light sources, arguably among the most powerful tools of modern scientific discovery, are presently undergoing a major transformation to provide orders of magnitude higher brightness and transverse coherence enabling the most demanding experiments. In these experiments, overall source stability will soon be limited by achievable levels of electron beam size stability, presently on the order of several microns, which is still 1-2 orders of magnitude larger than already demonstrated stability of source position and current. Until now source size stabilization has been achieved through corrections based on a combination of static predetermined physics models and lengthy calibration measurements, periodically repeated to counteract drift in the accelerator and instrumentation. We now demonstrate for the first time how the application of machine learning allows for a physics- and model-independent stabilization of source size relying only on previously existing instrumentation. Such feed-forward correction based on a neural network that can be continuously online retrained achieves source size stability as low as 0.2 μm (0.4%) rms, which results in overall source stability approaching the subpercent noise floor of the most sensitive experiments.
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Affiliation(s)
- S C Leemann
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S Liu
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - A Hexemer
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M A Marcus
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C N Melton
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - H Nishimura
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C Sun
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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17
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Stifler CA, Wittig NK, Sassi M, Sun CY, Marcus MA, Birkedal H, Beniash E, Rosso KM, Gilbert PUPA. X-ray Linear Dichroism in Apatite. J Am Chem Soc 2018; 140:11698-11704. [DOI: 10.1021/jacs.8b05547] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cayla A. Stifler
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Nina Kølln Wittig
- Department of Chemistry and iNANO, Aarhus University, Aarhus, 8000, Denmark
| | - Michel Sassi
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Chang-Yu Sun
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Henrik Birkedal
- Department of Chemistry and iNANO, Aarhus University, Aarhus, 8000, Denmark
| | - Elia Beniash
- Departments of Oral Biology and Bioengineering, Center for Craniofacial Regeneration, McGowan Institute for Regenerative Medicine, School of Dental Medicine, UPitt, Pittsburgh, Pennsylvania 15261, United States
| | - Kevin M. Rosso
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Pupa U. P. A. Gilbert
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, United States
- Departments of Chemistry, Materials Science, and Geoscience, University of Wisconsin, Madison, Wisconsin 53706, United States
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18
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Abstract
The effects of cerium oxide nanoparticles (CeO2-NPs) on 15N/14N ratio (δ15N) in wheat and barley were investigated. Seedlings were exposed to 0 and 500 mg CeO2-NPs/L (Ce-0 and Ce-500, respectively) in hydroponic suspension supplied with NH4NO3, NH4 +, or NO3 -. N uptake and δ15N discrimination (i.e. differences in δ15N of plant and δ15N of N source) were measured. Results showed that N content and 15N abundance decreased in wheat but increased in barley. Ce-500 only induced whole-plant δ15N discrimination (-1.48‰, P ≤ 0.10) with a simultaneous decrease (P ≤ 0.05) in whole-plant δ15N (-3.24‰) compared to Ce-0 (-2.74‰) in wheat in NH4 +. Ce-500 decreased (P ≤ 0.01) root δ15N of wheat in NH4NO3 and NH4 + (3.23 and -2.25‰, respectively) compared to Ce-0 (4.96 and -1.27‰, respectively), but increased (P ≤ 0.05) root δ15N of wheat in NO3 - (3.27‰) compared to Ce-0 (2.60‰). Synchrotron micro-XRF revealed the presence of CeO2-NPs in shoots of wheat and barley regardless of N source. Although the longer-term consequences of CeO2-NP exposure on N uptake and metabolism are unknown, the results clearly show the potential for ENMs to interfere with plant metabolism of critical plant nutrients such as N even when toxicity is not observed.
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Affiliation(s)
- Cyren M. Rico
- National Research Council, Research Associateship Program, 500 Fifth Street, NW, Washington, DC 20001, USA
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
- Missouri State University, Department of Chemistry, 901 S National Ave., Springfield, MO 65897, USA
| | - Mark G. Johnson
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Christian P. Andersen
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
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19
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Rico CM, Johnson MG, Marcus MA. Cerium oxide nanoparticles transformation at the root-soil interface of barley ( Hordeum vulgare L.). Environ Sci Nano 2018; 5:1807-1812. [PMID: 36161269 PMCID: PMC9504423 DOI: 10.1039/c8en00316e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The transformation of cerium oxide nanoparticles (CeO2-NPs) in soil and its role in plant uptake is a critical knowledge gap in the literature. This study investigated the reduction and speciation of CeO2-NPs in barley (Hordeum vulgare L.) cultivated in soil amended with 250 mg CeO2-NPs kg-1 soil. Synchrotron micro-X-ray fluorescence (μXRF) was employed for spatial localization and speciation of CeO2-NPs in thin sections of intact roots at the soil-root interface. Results revealed that Ce was largely localized in soil and at the root surface in nanoparticulate form (84-89%). However, a few hot spots on root surfaces revealed highly significant reduction (55-98%) of CeO2-NPs [Ce(IV)] to Ce(III) species. Interestingly, only roots in close proximity to hot spots showed Ce uptake which was largely CeO2 (89-91%) with very little amount Ce(III) (9-10%). These results suggest that the reduction of CeO2-NPs to Ce(III) is needed to facilitate uptake of Ce.
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Affiliation(s)
- Cyren M. Rico
- National Research Council, Research Associateship Program, 500 Fifth Street, NW, Washington, DC 20001, USA
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
- Missouri State University, Department of Chemistry, 901 S National Ave., Springfield, MO 65897, USA
- Corresponding author. Tel: 417 836 3304; Fax: 417 836 5507; (C. M. Rico)
| | - Mark G. Johnson
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
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20
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Ross M, Andersen A, Fox ZW, Zhang Y, Hong K, Lee JH, Cordones A, March AM, Doumy G, Southworth SH, Marcus MA, Schoenlein RW, Mukamel S, Govind N, Khalil M. Comprehensive Experimental and Computational Spectroscopic Study of Hexacyanoferrate Complexes in Water: From Infrared to X-ray Wavelengths. J Phys Chem B 2018; 122:5075-5086. [PMID: 29613798 DOI: 10.1021/acs.jpcb.7b12532] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a joint experimental and computational study of the hexacyanoferrate aqueous complexes at equilibrium in the 250 meV to 7.15 keV regime. The experiments and the computations include the vibrational spectroscopy of the cyanide ligands, the valence electronic absorption spectra, and Fe 1s core hole spectra using element-specific-resonant X-ray absorption and emission techniques. Density functional theory-based quantum mechanics/molecular mechanics molecular dynamics simulations are performed to generate explicit solute-solvent configurations, which serve as inputs for the spectroscopy calculations of the experiments spanning the IR to X-ray wavelengths. The spectroscopy simulations are performed at the same level of theory across this large energy window, which allows for a systematic comparison of the effects of explicit solute-solvent interactions in the vibrational, valence electronic, and core-level spectra of hexacyanoferrate complexes in water. Although the spectroscopy of hexacyanoferrate complexes in solution has been the subject of several studies, most of the previous works have focused on a narrow energy window and have not accounted for explicit solute-solvent interactions in their spectroscopy simulations. In this work, we focus our analysis on identifying how the local solvation environment around the hexacyanoferrate complexes influences the intensity and line shape of specific spectroscopic features in the UV/vis, X-ray absorption, and valence-to-core X-ray emission spectra. The identification of these features and their relationship to solute-solvent interactions is important because hexacyanoferrate complexes serve as model systems for understanding the photochemistry and photophysics of a large class of Fe(II) and Fe(III) complexes in solution.
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Affiliation(s)
- Matthew Ross
- Department of Chemistry , University of Washington , Seattle , Washington 98115 , United States
| | - Amity Andersen
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Zachary W Fox
- Department of Chemistry , University of Washington , Seattle , Washington 98115 , United States
| | - Yu Zhang
- Department of Chemistry, Physics and Astronomy , University of California , Irvine , California 92697 , United States
| | | | | | | | - Anne Marie March
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Gilles Doumy
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Stephen H Southworth
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | | | | | - Shaul Mukamel
- Department of Chemistry, Physics and Astronomy , University of California , Irvine , California 92697 , United States
| | - Niranjan Govind
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Munira Khalil
- Department of Chemistry , University of Washington , Seattle , Washington 98115 , United States
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21
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Polishchuk I, Bracha AA, Bloch L, Levy D, Kozachkevich S, Etinger-Geller Y, Kauffmann Y, Burghammer M, Giacobbe C, Villanova J, Hendler G, Sun CY, Giuffre AJ, Marcus MA, Kundanati L, Zaslansky P, Pugno NM, Gilbert PUPA, Katsman A, Pokroy B. Coherently aligned nanoparticles within a biogenic single crystal: A biological prestressing strategy. Science 2018; 358:1294-1298. [PMID: 29217569 DOI: 10.1126/science.aaj2156] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 03/16/2017] [Accepted: 09/27/2017] [Indexed: 11/02/2022]
Abstract
In contrast to synthetic materials, materials produced by organisms are formed in ambient conditions and with a limited selection of elements. Nevertheless, living organisms reveal elegant strategies for achieving specific functions, ranging from skeletal support to mastication, from sensors and defensive tools to optical function. Using state-of-the-art characterization techniques, we present a biostrategy for strengthening and toughening the otherwise brittle calcite optical lenses found in the brittlestar Ophiocoma wendtii This intriguing process uses coherent nanoprecipitates to induce compressive stresses on the host matrix, functionally resembling the Guinier-Preston zones known in classical metallurgy. We believe that these calcitic nanoparticles, being rich in magnesium, segregate during or just after transformation from amorphous to crystalline phase, similarly to segregation behavior from a supersaturated quenched alloy.
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Affiliation(s)
- Iryna Polishchuk
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Avigail Aronhime Bracha
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Leonid Bloch
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Davide Levy
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Stas Kozachkevich
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Yael Etinger-Geller
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Yaron Kauffmann
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | | | | | - Julie Villanova
- The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France
| | - Gordon Hendler
- Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | - Chang-Yu Sun
- Departments of Physics, Chemistry, Geoscience, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Anthony J Giuffre
- Departments of Physics, Chemistry, Geoscience, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Lakshminath Kundanati
- Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy
| | - Paul Zaslansky
- Department for Restorative and Preventive Dentistry, Centrum für Zahn-, Mund- und Kieferheilkunde, Charité-Universitätsmedizin Berlin, 14197 Berlin, Germany
| | - Nicola M Pugno
- Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy.,School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK.,Ket-Lab, Edoardo Amaldi Foundation, Italian Space Agency, Via del Politecnico snc, 00133 Rome, Italy
| | - Pupa U P A Gilbert
- Departments of Physics, Chemistry, Geoscience, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Alex Katsman
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
| | - Boaz Pokroy
- Department of Materials Science and Engineering and the Russel Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel
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22
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Scholl A, Marcus MA, Doran A, Nasiatka JR, Young AT, MacDowell AA, Streubel R, Kent N, Feng J, Wan W, Padmore HA. Hartmann characterization of the PEEM-3 aberration-corrected X-ray photoemission electron microscope. Ultramicroscopy 2018; 188:77-84. [PMID: 29554489 DOI: 10.1016/j.ultramic.2018.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/06/2018] [Accepted: 03/09/2018] [Indexed: 11/24/2022]
Abstract
Aberration correction by an electron mirror dramatically improves the spatial resolution and transmission of photoemission electron microscopes. We will review the performance of the recently installed aberration corrector of the X-ray Photoemission Electron Microscope PEEM-3 and show a large improvement in the efficiency of the electron optics. Hartmann testing is introduced as a quantitative method to measure the geometrical aberrations of a cathode lens electron microscope. We find that aberration correction leads to an order of magnitude reduction of the spherical aberrations, suggesting that a spatial resolution of below 100 nm is possible at 100% transmission of the optics when using x-rays. We demonstrate this improved performance by imaging test patterns employing element and magnetic contrast.
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Affiliation(s)
- A Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA.
| | - M A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A Doran
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - J R Nasiatka
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A T Young
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A A MacDowell
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - R Streubel
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - N Kent
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA; Department of Physics, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - J Feng
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - W Wan
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - H A Padmore
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
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23
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Fakra SC, Luef B, Castelle CJ, Mullin SW, Williams KH, Marcus MA, Schichnes D, Banfield JF. Correlative Cryogenic Spectromicroscopy to Investigate Selenium Bioreduction Products. Environ Sci Technol 2018. [PMID: 26371540 DOI: 10.1021/acs.est.7b01409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Accurate mapping of the composition and structure of minerals and associated biological materials is critical in geomicrobiology and environmental research. Here, we have developed an apparatus that allows the correlation of cryogenic transmission electron microscopy (cryo-TEM) and synchrotron hard X-ray microprobe (SHXM) data sets to precisely determine the distribution, valence state, and structure of selenium in biofilms sampled from a contaminated aquifer near Rifle, CO. Results were replicated in the laboratory via anaerobic selenate-reducing enrichment cultures. 16S rRNA analyses of field-derived biofilm indicated the dominance of Betaproteobacteria from the Comamonadaceae family and uncultivated members of the Simplicispira genus. The major product in field and culture-derived biofilms is ∼25-300 nm red amorphous Se0 aggregates of colloidal nanoparticles. Correlative analyses of the cultures provided direct evidence for the microbial dissimilatory reduction of Se(VI) to Se(IV) to Se0. Extended X-ray absorption fine-structure spectroscopy showed red amorphous Se0 with a first shell Se-Se interatomic distance of 2.339 ± 0.003 Å. Complementary scanning transmission X-ray microscopy revealed that these aggregates are strongly associated with a protein-rich biofilm matrix. These findings have important implications for predicting the stability and mobility of Se bioremediation products and understanding of Se biogeochemical cycling. The approach, involving the correlation of cryo-SHXM and cryo-TEM data sets from the same specimen area, is broadly applicable to biological and environmental samples.
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Affiliation(s)
- Sirine C Fakra
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Birgit Luef
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Cindy J Castelle
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Sean W Mullin
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Kenneth H Williams
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Matthew A Marcus
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Denise Schichnes
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Jillian F Banfield
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
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24
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Fakra SC, Luef B, Castelle CJ, Mullin SW, Williams KH, Marcus MA, Schichnes D, Banfield JF. Correlative Cryogenic Spectromicroscopy to Investigate Selenium Bioreduction Products. Environ Sci Technol 2018; 52:503-512. [PMID: 26371540 DOI: 10.1021/acs.est.5b01409] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Accurate mapping of the composition and structure of minerals and associated biological materials is critical in geomicrobiology and environmental research. Here, we have developed an apparatus that allows the correlation of cryogenic transmission electron microscopy (cryo-TEM) and synchrotron hard X-ray microprobe (SHXM) data sets to precisely determine the distribution, valence state, and structure of selenium in biofilms sampled from a contaminated aquifer near Rifle, CO. Results were replicated in the laboratory via anaerobic selenate-reducing enrichment cultures. 16S rRNA analyses of field-derived biofilm indicated the dominance of Betaproteobacteria from the Comamonadaceae family and uncultivated members of the Simplicispira genus. The major product in field and culture-derived biofilms is ∼25-300 nm red amorphous Se0 aggregates of colloidal nanoparticles. Correlative analyses of the cultures provided direct evidence for the microbial dissimilatory reduction of Se(VI) to Se(IV) to Se0. Extended X-ray absorption fine-structure spectroscopy showed red amorphous Se0 with a first shell Se-Se interatomic distance of 2.339 ± 0.003 Å. Complementary scanning transmission X-ray microscopy revealed that these aggregates are strongly associated with a protein-rich biofilm matrix. These findings have important implications for predicting the stability and mobility of Se bioremediation products and understanding of Se biogeochemical cycling. The approach, involving the correlation of cryo-SHXM and cryo-TEM data sets from the same specimen area, is broadly applicable to biological and environmental samples.
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Affiliation(s)
- Sirine C Fakra
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Birgit Luef
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Cindy J Castelle
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Sean W Mullin
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Kenneth H Williams
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Matthew A Marcus
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Denise Schichnes
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
| | - Jillian F Banfield
- Department of Earth and Planetary Science and ‡Department of Plant & Microbial Biology, University of California , Berkeley, California 94720, United States
- Advanced Light Source and ∥Earth Sciences Division, Lawrence Berkeley National Lab , Berkeley, California 94720, United States
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25
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Marcus MA, Amini S, Stifler CA, Sun CY, Tamura N, Bechtel HA, Parkinson DY, Barnard HS, Zhang XXX, Chua JQI, Miserez A, Gilbert PUPA. Parrotfish Teeth: Stiff Biominerals Whose Microstructure Makes Them Tough and Abrasion-Resistant To Bite Stony Corals. ACS Nano 2017; 11:11856-11865. [PMID: 29053258 DOI: 10.1021/acsnano.7b05044] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Parrotfish (Scaridae) feed by biting stony corals. To investigate how their teeth endure the associated contact stresses, we examine the chemical composition, nano- and microscale structure, and the mechanical properties of the steephead parrotfish Chlorurus microrhinos tooth. Its enameloid is a fluorapatite (Ca5(PO4)3F) biomineral with outstanding mechanical characteristics: the mean elastic modulus is 124 GPa, and the mean hardness near the biting surface is 7.3 GPa, making this one of the stiffest and hardest biominerals measured; the mean indentation yield strength is above 6 GPa, and the mean fracture toughness is ∼2.5 MPa·m1/2, relatively high for a highly mineralized material. This combination of properties results in high abrasion resistance. Fluorapatite X-ray absorption spectroscopy exhibits linear dichroism at the Ca L-edge, an effect that makes peak intensities vary with crystal orientation, under linearly polarized X-ray illumination. This observation enables polarization-dependent imaging contrast mapping of apatite, a method to quantitatively measure and display nanocrystal orientations in large, pristine arrays of nano- and microcrystalline structures. Parrotfish enameloid consists of 100 nm-wide, microns long crystals co-oriented and assembled into bundles interwoven as the warp and the weave in fabric and therefore termed fibers here. These fibers gradually decrease in average diameter from 5 μm at the back to 2 μm at the tip of the tooth. Intriguingly, this size decrease is spatially correlated with an increase in hardness.
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Affiliation(s)
- Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - Shahrouz Amini
- Biological and Biomimetic Material Laboratory, School of Materials Science and Engineering, Nanyang Technological University , 637553 Singapore
| | - Cayla A Stifler
- Department of Physics, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Chang-Yu Sun
- Department of Physics, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Nobumichi Tamura
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - Hans A Bechtel
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - Dilworth Y Parkinson
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - Harold S Barnard
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - Xiyue X X Zhang
- Advanced Light Source, Lawrence Berkeley Laboratory , Berkeley, California 94720, United States
| | - J Q Isaiah Chua
- Biological and Biomimetic Material Laboratory, School of Materials Science and Engineering, Nanyang Technological University , 637553 Singapore
| | - Ali Miserez
- Biological and Biomimetic Material Laboratory, School of Materials Science and Engineering, Nanyang Technological University , 637553 Singapore
- School of Biological Sciences, Nanyang Technological University , 637551 Singapore
| | - Pupa U P A Gilbert
- Department of Physics, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
- Departments of Chemistry, Geoscience, Materials Science Program, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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26
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Sun CY, Marcus MA, Frazier MJ, Giuffre AJ, Mass T, Gilbert PUPA. Spherulitic Growth of Coral Skeletons and Synthetic Aragonite: Nature's Three-Dimensional Printing. ACS Nano 2017; 11:6612-6622. [PMID: 28564539 DOI: 10.1021/acsnano.7b00127] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Coral skeletons were long assumed to have a spherulitic structure, that is, a radial distribution of acicular aragonite (CaCO3) crystals with their c-axes radiating from series of points, termed centers of calcification (CoCs). This assumption was based on morphology alone, not on crystallography. Here we measure the orientation of crystals and nanocrystals and confirm that corals grow their skeletons in bundles of aragonite crystals, with their c-axes and long axes oriented radially and at an angle from the CoCs, thus precisely as expected for feather-like or "plumose" spherulites. Furthermore, we find that in both synthetic and coral aragonite spherulites at the nanoscale adjacent crystals have similar but not identical orientations, thus demonstrating by direct observation that even at nanoscale the mechanism of spherulite formation is non-crystallographic branching (NCB), as predicted by theory. Finally, synthetic aragonite spherulites and coral skeletons have similar angle spreads, and angular distances of adjacent crystals, further confirming that coral skeletons are spherulites. This is important because aragonite grows anisotropically, 10 times faster along the c-axis than along the a-axis direction, and spherulites fill space with crystals growing almost exclusively along the c-axis, thus they can fill space faster than any other aragonite growth geometry, and create isotropic materials from anisotropic crystals. Greater space filling rate and isotropic mechanical behavior are key to the skeleton's supporting function and therefore to its evolutionary success. In this sense, spherulitic growth is Nature's 3D printing.
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Affiliation(s)
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | | | | | - Tali Mass
- Marine Biology Department, University of Haifa , Mt. Carmel, Haifa 31905, Israel
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27
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Holden WM, Hoidn OR, Ditter AS, Seidler GT, Kas J, Stein JL, Cossairt BM, Kozimor SA, Guo J, Ye Y, Marcus MA, Fakra S. A compact dispersive refocusing Rowland circle X-ray emission spectrometer for laboratory, synchrotron, and XFEL applications. Rev Sci Instrum 2017; 88:073904. [PMID: 28764488 DOI: 10.1063/1.4994739] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
X-ray emission spectroscopy is emerging as an important complement to x-ray absorption fine structure spectroscopy, providing a characterization of the occupied electronic density of states local to the species of interest. Here, we present details of the design and performance of a compact x-ray emission spectrometer that uses a dispersive refocusing Rowland (DRR) circle geometry to achieve excellent performance for the 2-2.5 keV range, i.e., especially for the K-edge emission from sulfur and phosphorous. The DRR approach allows high energy resolution even for unfocused x-ray sources. This property enables high count rates in laboratory studies, approaching those of insertion-device beamlines at third-generation synchrotrons, despite use of only a low-powered, conventional x-ray tube. The spectrometer, whose overall scale is set by use of a 10-cm diameter Rowland circle and a new small-pixel complementary metal-oxide-semiconductor x-ray camera, is easily portable to synchrotron or x-ray free electron laser beamlines. Photometrics from measurements at the Advanced Light Source show excellent overall instrumental efficiency. In addition, the compact size of this instrument lends itself to future multiplexing to gain large factors in net collection efficiency or its implementation in controlled gas gloveboxes either in the lab or in an endstation.
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Affiliation(s)
- William M Holden
- Physics Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Oliver R Hoidn
- Physics Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Alexander S Ditter
- Physics Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Gerald T Seidler
- Physics Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Joshua Kas
- Physics Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Jennifer L Stein
- Chemistry Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Brandi M Cossairt
- Chemistry Department, University of Washington, Seattle, Washington 98195-1560, USA
| | - Stosh A Kozimor
- Los Alamos National Laboratories, Los Alamos, New Mexico 87544, USA
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Yifan Ye
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Sirine Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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28
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Favaro M, Drisdell WS, Marcus MA, Gregoire JM, Crumlin EJ, Haber JA, Yano J. An Operando Investigation of (Ni–Fe–Co–Ce)Ox System as Highly Efficient Electrocatalyst for Oxygen Evolution Reaction. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03126] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Marco Favaro
- Advanced
Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Joint
Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Walter S. Drisdell
- Joint
Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Matthew A. Marcus
- Advanced
Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - John M. Gregoire
- Joint
Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - Ethan J. Crumlin
- Advanced
Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Joel A. Haber
- Joint
Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - Junko Yano
- Joint
Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Molecular
Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
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29
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Rico CM, Johnson MG, Marcus MA, Andersen CP. Intergenerational responses of wheat ( Triticum aestivum L.) to cerium oxide nanoparticles exposure. Environ Sci Nano 2017; 4:700-711. [PMID: 30147938 PMCID: PMC6104651 DOI: 10.1039/c7en00057j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The intergenerational impact of engineered nanomaterials in plants is a key knowledge gap in the literature. A soil microcosm study was performed to assess the effects of multi-generational exposure of wheat (Triticum aestivum L.) to cerium oxide nanoparticles (CeO2-NPs). Seeds from plants that were exposed to 0, 125, and 500 mg CeO2-NPs/kg soil (Ce-0, Ce-125 or Ce-500, respectively) in first generation (S1) were cultivated in factorial combinations of Ce-0, Ce-125 or Ce-500 to produce second generation (S2) plants. The factorial combinations for first/second generation treatments in Ce-125 were S1-Ce-0/S2-Ce-0, S1-Ce-0/S2-Ce-125, S1-Ce-125/S2-Ce-0 and S1-Ce-125/S2-Ce-125, and in Ce-500 were S1-Ce-0/S2-Ce-0, S1-Ce-0/S2-Ce-500, S1-Ce-500/S2-Ce-0 and S1-Ce-500/S2-Ce-500. Agronomic, elemental, isotopic, and synchrotron X-ray fluorescence (XRF) and X-ray absorption near-edge spectroscopy (XANES) data were collected on second generation plants. Results showed that plants treated during the first generation only with either Ce-125 or Ce-500 (e.g. S1-Ce-125/S2-Ce-0 or S1-Ce-500/S2-Ce-0) had reduced accumulation of Ce (61 or 50%), Fe (49 or 58%) and Mn (34 or 41%) in roots, and δ15N (11 or 8%) in grains compared to the plants not treated in both generations (i.e. S1-Ce-0/S2-Ce-0). Plants treated in both generations with Ce-125 (i.e. S1-Ce-125/S2-Ce-125) produced grains that had lower Mn, Ca, K, Mg and P relative to plants treated in the second generation only (i.e. S1-Ce-0/S2-Ce-125). In addition, synchrotron XRF elemental chemistry maps of soil/plant thin-sections revealed limited transformation of CeO2-NPs with no evidence of plant uptake or accumulation. The findings demonstrated that first generation exposure of wheat to CeO2-NPs affects the physiology and nutrient profile of the second generation plants. However, the lack of concentration-dependent responses indicate that complex physiological processes are involved which alter uptake and metabolism of CeO2-NPs in wheat.
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Affiliation(s)
- Cyren M. Rico
- National Research Council, Research Associateship Program, 500 Fifth Street, NW, Washington, DC 20001, USA
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
| | - Mark G. Johnson
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Christian P. Andersen
- US Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St., Corvallis, OR 97333, USA
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30
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Miyamoto C, Marcus MA, Sakata K, Kurisu M, Takahashi Y. Depth-dependent Calcium Speciation in Individual Aerosol Particles by Combination of Fluorescence Yield and Conversion Electron Yield XAFS Using X-ray Microbeam. CHEM LETT 2016. [DOI: 10.1246/cl.160392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Gray AX, Jeong J, Aetukuri NP, Granitzka P, Chen Z, Kukreja R, Higley D, Chase T, Reid AH, Ohldag H, Marcus MA, Scholl A, Young AT, Doran A, Jenkins CA, Shafer P, Arenholz E, Samant MG, Parkin SSP, Dürr HA. Correlation-Driven Insulator-Metal Transition in Near-Ideal Vanadium Dioxide Films. Phys Rev Lett 2016; 116:116403. [PMID: 27035314 DOI: 10.1103/physrevlett.116.116403] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Indexed: 06/05/2023]
Abstract
We use polarization- and temperature-dependent x-ray absorption spectroscopy, in combination with photoelectron microscopy, x-ray diffraction, and electronic transport measurements, to study the driving force behind the insulator-metal transition in VO_{2}. We show that both the collapse of the insulating gap and the concomitant change in crystal symmetry in homogeneously strained single-crystalline VO_{2} films are preceded by the purely electronic softening of Coulomb correlations within V-V singlet dimers. This process starts 7 K (±0.3 K) below the transition temperature, as conventionally defined by electronic transport and x-ray diffraction measurements, and sets the energy scale for driving the near-room-temperature insulator-metal transition in this technologically promising material.
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Affiliation(s)
- A X Gray
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, Temple University, 1925 North 12th Street, Philadelphia, Pennsylvania 19130, USA
| | - J Jeong
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA
| | - N P Aetukuri
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA
| | - P Granitzka
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Van der Waals-Zeeman Institute, University of Amsterdam, 1018XE Amsterdam, The Netherlands
| | - Z Chen
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, Stanford University, Stanford, California 94305, USA
| | - R Kukreja
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA
| | - D Higley
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - T Chase
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - A H Reid
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H Ohldag
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - M A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - A Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - A T Young
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - A Doran
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - C A Jenkins
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - P Shafer
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - E Arenholz
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA
| | - M G Samant
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA
| | - S S P Parkin
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA
| | - H A Dürr
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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Affiliation(s)
- Ross T. DeVol
- Department
of Physics, University of Wisconsin−Madison, 1150 University Avenue, Madison, Wisconsin 53706, United States
| | - Chang-Yu Sun
- Department
of Physics, University of Wisconsin−Madison, 1150 University Avenue, Madison, Wisconsin 53706, United States
| | - Matthew A. Marcus
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Susan N. Coppersmith
- Department
of Physics, University of Wisconsin−Madison, 1150 University Avenue, Madison, Wisconsin 53706, United States
| | - Satish C. B. Myneni
- Department
of Geosciences, Princeton University, Princeton, New Jersey 08544, United States
| | - Pupa U.P.A. Gilbert
- Department
of Physics, University of Wisconsin−Madison, 1150 University Avenue, Madison, Wisconsin 53706, United States
- Department
of Chemistry, University of Wisconsin−Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Radcliffe
Institute for Advanced Study, Harvard University, 8 Garden Street, Cambridge, Massachusetts 02138, United States
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Dahlman CJ, Tan Y, Marcus MA, Milliron DJ. Spectroelectrochemical Signatures of Capacitive Charging and Ion Insertion in Doped Anatase Titania Nanocrystals. J Am Chem Soc 2015; 137:9160-6. [DOI: 10.1021/jacs.5b04933] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Clayton J. Dahlman
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, 200 E. Dean Keeton Street, Austin, Texas 78712, United States
| | - Yizheng Tan
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, 200 E. Dean Keeton Street, Austin, Texas 78712, United States
| | | | - Delia J. Milliron
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, 200 E. Dean Keeton Street, Austin, Texas 78712, United States
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Sohn H, Nowakowski ME, Liang CY, Hockel JL, Wetzlar K, Keller S, McLellan BM, Marcus MA, Doran A, Young A, Kläui M, Carman GP, Bokor J, Candler RN. Electrically driven magnetic domain wall rotation in multiferroic heterostructures to manipulate suspended on-chip magnetic particles. ACS Nano 2015; 9:4814-4826. [PMID: 25906195 DOI: 10.1021/nn5056332] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, we experimentally demonstrate deterministic electrically driven, strain-mediated domain wall (DW) rotation in ferromagnetic Ni rings fabricated on piezoelectric [Pb(Mg1/3Nb2/3)O3]0.66-[PbTiO3]0.34 (PMN-PT) substrates. While simultaneously imaging the Ni rings with X-ray magnetic circular dichroism photoemission electron microscopy, an electric field is applied across the PMN-PT substrate that induces strain in the ring structures, driving DW rotation around the ring toward the dominant PMN-PT strain axis by the inverse magnetostriction effect. The DW rotation we observe is analytically predicted using a fully coupled micromagnetic/elastodynamic multiphysics simulation, which verifies that the experimental behavior is caused by the electrically generated strain in this multiferroic system. Finally, this DW rotation is used to capture and manipulate micrometer-scale magnetic beads in a fluidic environment to demonstrate a proof-of-concept energy-efficient pathway for multiferroic-based lab-on-a-chip applications.
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Affiliation(s)
| | - Mark E Nowakowski
- §Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, United States
| | | | | | | | | | - Brenda M McLellan
- ∥Department of Physics, NYU Polytechnic School of Engineering, New York, New York 11201, United States
| | - Matthew A Marcus
- ⊥Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew Doran
- ⊥Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Anthony Young
- ⊥Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Mathias Kläui
- #Institute of Physics, Johannes Gutenberg University, 55128 Mainz, Germany
| | | | - Jeffrey Bokor
- §Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, United States
| | - Robert N Candler
- ∇California NanoSystems Institute, Los Angeles, California 90095, United States
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Yashchuk VV, Morrison GY, Marcus MA, Domning EE, Merthe DJ, Salmassi F, Smith BV. Performance optimization of a bendable parabolic cylinder collimating X-ray mirror for the ALS micro-XAS beamline 10.3.2. J Synchrotron Radiat 2015; 22:666-74. [PMID: 25931083 PMCID: PMC4416681 DOI: 10.1107/s1600577515001459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 01/22/2015] [Indexed: 06/04/2023]
Abstract
The Advanced Light Source (ALS) beamline (BL) 10.3.2 is an apparatus for X-ray microprobe spectroscopy and diffraction experiments, operating in the energy range 2.4-17 keV. The performance of the beamline, namely the spatial and energy resolutions of the measurements, depends significantly on the collimation quality of light incident on the monochromator. In the BL 10.3.2 end-station, the synchrotron source is imaged 1:1 onto a set of roll slits which form a virtual source. The light from this source is collimated in the vertical direction by a bendable parabolic cylinder mirror. Details are presented of the mirror design, which allows for precision assembly, alignment and shaping of the mirror, as well as for extending of the mirror operating lifetime by a factor of ∼10. Assembly, mirror optimal shaping and preliminary alignment were performed ex situ in the ALS X-ray Optics Laboratory (XROL). Using an original method for optimal ex situ characterization and setting of bendable X-ray optics developed at the XROL, a root-mean-square (RMS) residual surface slope error of 0.31 µrad with respect to the desired parabola, and an RMS residual height error of less than 3 nm were achieved. Once in place at the beamline, deviations from the designed optical geometry (e.g. due to the tolerances for setting the distance to the virtual source, the grazing incidence angle, the transverse position) and/or mirror shape (e.g. due to a heat load deformation) may appear. Due to the errors, on installation the energy spread from the monochromator is typically a few electron-volts. Here, a new technique developed and successfully implemented for at-wavelength (in situ) fine optimal tuning of the mirror, enabling us to reduce the collimation-induced energy spread to ∼0.05 eV, is described.
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Affiliation(s)
- Valeriy V. Yashchuk
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Gregory Y. Morrison
- Engineering Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Edward E. Domning
- Engineering Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Daniel J. Merthe
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Farhad Salmassi
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
| | - Brian V. Smith
- Engineering Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 15R0317, Berkeley, CA 94720, USA
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Varadharajan C, Han R, Beller HR, Yang L, Marcus MA, Michel M, Nico PS. Characterization of Chromium Bioremediation Products in Flow-Through Column Sediments Using Micro-X-ray Fluorescence and X-ray Absorption Spectroscopy. J Environ Qual 2015; 44:729-738. [PMID: 26024254 DOI: 10.2134/jeq2014.08.0329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Microbially mediated reductive immobilization of chromium is a possible remediation technique for sites contaminated with Cr(VI). This study is part of a broader effort investigating the biogeochemical mechanisms for Cr(VI) reduction in Hanford 100H aquifer sediments using flow-through laboratory columns. It had previously been shown that reduced chromium in the solid phase was in the form of freshly precipitated mixed-phase Cr(III)-Fe(III) (hydr)oxides, irrespective of the biogeochemical conditions in the columns. In this study, the reduced Cr phases in the columns were investigated further using spectroscopy to understand the structure and mechanisms involved in the formation of the end products. Several samples representing potential processes that could be occurring in the columns were synthesized in the laboratory and characterized using X-ray absorption near edge structure (XANES) and X-ray scattering. The XANES of Cr(III) particles in the columns most closely resembled those from synthetic samples produced by the abiotic reaction of Cr(VI) with microbially reduced Fe(II). Microbially mediated Cr-Fe reduction products were distinct from abiotic Cr-Fe (hydr)oxides [CrFe(OH)] and organically complexed Cr(III) sorbed onto the surface of a mixed ferrihydrite-goethite mineral phase. Furthermore, analyses of the abiotically synthesized samples revealed that even the end products of purely abiotic, iron-mediated reduction of Cr(VI) are affected by factors such as the presence of excess aqueous Fe(II) and cellular matter. These results suggest that CrFe(OH) phases made under realistic subsurface conditions or in biotic cultures are structurally different from pure Cr(OH) or laboratory-synthesized CrFe(OH). The observed structural differences imply that the reactivity and stability of biogenic CrFe(OH) could potentially be different from that of abiotic CrFe(OH).
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Gu Z, Nowakowski ME, Carlton DB, Storz R, Im MY, Hong J, Chao W, Lambson B, Bennett P, Alam MT, Marcus MA, Doran A, Young A, Scholl A, Fischer P, Bokor J. Sub-nanosecond signal propagation in anisotropy-engineered nanomagnetic logic chains. Nat Commun 2015; 6:6466. [PMID: 25774621 PMCID: PMC4382687 DOI: 10.1038/ncomms7466] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 01/30/2015] [Indexed: 11/23/2022] Open
Abstract
Energy efficient nanomagnetic logic (NML) computing architectures propagate binary information by relying on dipolar field coupling to reorient closely spaced nanoscale magnets. Signal propagation in nanomagnet chains has been previously characterized by static magnetic imaging experiments; however, the mechanisms that determine the final state and their reproducibility over millions of cycles in high-speed operation have yet to be experimentally investigated. Here we present a study of NML operation in a high-speed regime. We perform direct imaging of digital signal propagation in permalloy nanomagnet chains with varying degrees of shape-engineered biaxial anisotropy using full-field magnetic X-ray transmission microscopy and time-resolved photoemission electron microscopy after applying nanosecond magnetic field pulses. An intrinsic switching time of 100 ps per magnet is observed. These experiments, and accompanying macrospin and micromagnetic simulations, reveal the underlying physics of NML architectures repetitively operated on nanosecond timescales and identify relevant engineering parameters to optimize performance and reliability. Closely-spaced anisotropically-engineered single-domain nanomagnets may be exploited to encode and transmit binary information. Here, Gu et al. use time-resolved X-ray microscopy to image signal propagation at the intrinsic nanomagnetic switching limit in permalloy nanomagnet chains.
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Affiliation(s)
- Zheng Gu
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Mark E Nowakowski
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - David B Carlton
- Intel Corp., 2200 Mission College Boulevard, Santa Clara, California 95054, USA
| | - Ralph Storz
- Thorlabs Inc., 56 Sparta Avenue, Newton, New Jersey 07860, USA
| | - Mi-Young Im
- 1] Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA [2] Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873, Korea
| | - Jeongmin Hong
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Weilun Chao
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Brian Lambson
- iRunway, 2906 Stender Way, Santa Clara, California 95054, USA
| | - Patrick Bennett
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Mohmmad T Alam
- Intel Corp., 5200 NE Elam Young Parkway, Hillsboro, Oregon 97124, USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Andrew Doran
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Anthony Young
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Andreas Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Peter Fischer
- 1] Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA [2] Department of Physics, University of California, Santa Cruz, California 94056, USA
| | - Jeffrey Bokor
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
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Boesenberg U, Marcus MA, Shukla AK, Yi T, McDermott E, Teh PF, Srinivasan M, Moewes A, Cabana J. Asymmetric pathways in the electrochemical conversion reaction of NiO as battery electrode with high storage capacity. Sci Rep 2014; 4:7133. [PMID: 25410966 PMCID: PMC4238016 DOI: 10.1038/srep07133] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 11/04/2014] [Indexed: 11/09/2022] Open
Abstract
Electrochemical conversion reactions of transition metal compounds create opportunities for large energy storage capabilities exceeding modern Li-ion batteries. However, for practical electrodes to be envisaged, a detailed understanding of their mechanisms is needed, especially vis-à-vis the voltage hysteresis observed between reduction and oxidation. Here, we present such insight at scales from local atomic arrangements to whole electrodes. NiO was chosen as a simple model system. The most important finding is that the voltage hysteresis has its origin in the differing chemical pathways during reduction and oxidation. This asymmetry is enabled by the presence of small metallic clusters and, thus, is likely to apply to other transition metal oxide systems. The presence of nanoparticles also influences the electrochemical activity of the electrolyte and its degradation products and can create differences in transport properties within an electrode, resulting in localized reactions around converted domains that lead to compositional inhomogeneities at the microscale.
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Affiliation(s)
- Ulrike Boesenberg
- 1] Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA [2] Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg, Germany
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Alpesh K Shukla
- Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Tanghong Yi
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Eamon McDermott
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK, Canada
| | - Pei Fen Teh
- 1] Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA [2] School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Madhavi Srinivasan
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Alexander Moewes
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK, Canada
| | - Jordi Cabana
- 1] Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA [2] Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA
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Alford ÉR, Lindblom SD, Pittarello M, Freeman JL, Fakra SC, Marcus MA, Broeckling C, Pilon-Smits EAH, Paschke MW. Roles of rhizobial symbionts in selenium hyperaccumulation in Astragalus (Fabaceae). Am J Bot 2014; 101:1895-905. [PMID: 25366855 DOI: 10.3732/ajb.1400223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
PREMISE OF THE STUDY Are there dimensions of symbiotic root interactions that are overlooked because plant mineral nutrition is the foundation and, perhaps too often, the sole explanation through which we view these relationships? In this paper we investigate how the root nodule symbiosis in selenium (Se) hyperaccumulator and nonaccumulator Astragalus species influences plant selenium (Se) accumulation. METHODS In greenhouse studies, Se was added to nodulated and nonnodulated hyperaccumulator and nonaccumulator Astragalus plants, followed by investigation of nitrogen (N)-Se relationships. Selenium speciation was also investigated, using x-ray microprobe analysis and liquid chromatography-mass spectrometry (LC-MS). KEY RESULTS Nodulation enhanced biomass production and Se to S ratio in both hyperaccumulator and nonaccumulator plants. The hyperaccumulator contained more Se when nodulated, while the nonaccumulator contained less S when nodulated. Shoot [Se] was positively correlated with shoot N in Se-hyperaccumulator species, but not in nonhyperaccumulator species. The x-ray microprobe analysis showed that hyperaccumulators contain significantly higher amounts of organic Se than nonhyperaccumulators. LC-MS of A. bisulcatus leaves revealed that nodulated plants contained more γ-glutamyl-methylselenocysteine (γ-Glu-MeSeCys) than nonnodulated plants, while MeSeCys levels were similar. CONCLUSIONS Root nodule mutualism positively affects Se hyperaccumulation in Astragalus. The microbial N supply particularly appears to contribute glutamate for the formation of γ-Glu-MeSeCys. Our results provide insight into the significance of symbiotic interactions in plant adaptation to edaphic conditions. Specifically, our findings illustrate that the importance of these relationships are not limited to alleviating macronutrient deficiencies.
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Affiliation(s)
- Élan R Alford
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado 80523 USA Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, Colorado 80523 USA
| | - Stormy D Lindblom
- Biology Department, Colorado State University, Fort Collins, Colorado 80523 USA
| | - Marco Pittarello
- Biology Department, Colorado State University, Fort Collins, Colorado 80523 USA
| | - John L Freeman
- Biology Department, Colorado State University, Fort Collins, Colorado 80523 USA
| | - Sirine C Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
| | - Matthew A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
| | - Corey Broeckling
- Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, Colorado 80523 USA
| | - Elizabeth A H Pilon-Smits
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado 80523 USA Biology Department, Colorado State University, Fort Collins, Colorado 80523 USA
| | - Mark W Paschke
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado 80523 USA Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, Colorado 80523 USA
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Beller HR, Yang L, Varadharajan C, Han R, Lim HC, Karaoz U, Molins S, Marcus MA, Brodie EL, Steefel CI, Nico PS. Divergent aquifer biogeochemical systems converge on similar and unexpected Cr(VI) reduction products. Environ Sci Technol 2014; 48:10699-10706. [PMID: 25084058 DOI: 10.1021/es5016982] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study of reductive chromium immobilization, we found that flow-through columns constructed with homogenized aquifer sediment and continuously infused with lactate, chromate, and various native electron acceptors diverged to have very different Cr(VI)-reducing biogeochemical regimes characterized by either denitrifying or fermentative conditions (as indicated by effluent chemical data, 16S rRNA pyrotag data, and metatranscriptome data). Despite the two dramatically different biogeochemical environments that evolved in the columns, these regimes created similar Cr(III)-Fe(III) hydroxide precipitates as the predominant Cr(VI) reduction product, as characterized by micro-X-ray fluorescence and micro-X-ray absorption near-edge structure analysis. We discuss two conflicting scenarios of microbially mediated formation of Cr(III)-Fe(III) precipitates, each of which is both supported and contradicted by different lines of evidence: (1) enzymatic reduction of Cr(VI) to Cr(III) followed by coprecipitation of Cr(III) and Fe(III) and (2) both regimes generated at least small amounts of Fe(II), which abiotically reduced Cr(VI) to form a Cr-Fe precipitate. Evidence of zones with different levels of Cr(VI) reduction suggest that local heterogeneity may have confounded interpretation of processes based on bulk measurements. This study indicates that the bulk redox status and biogeochemical regime, as categorized by the dominant electron-accepting process, do not necessarily control the final product of Cr(VI) reduction.
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Affiliation(s)
- Harry R Beller
- Earth Sciences Division and ‡Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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DeVol RT, Metzler RA, Kabalah-Amitai L, Pokroy B, Politi Y, Gal A, Addadi L, Weiner S, Fernandez-Martinez A, Demichelis R, Gale JD, Ihli J, Meldrum FC, Blonsky AZ, Killian CE, Salling CB, Young AT, Marcus MA, Scholl A, Doran A, Jenkins C, Bechtel HA, Gilbert PUPA. Oxygen spectroscopy and polarization-dependent imaging contrast (PIC)-mapping of calcium carbonate minerals and biominerals. J Phys Chem B 2014; 118:8449-57. [PMID: 24821199 DOI: 10.1021/jp503700g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
X-ray absorption near-edge structure (XANES) spectroscopy and spectromicroscopy have been extensively used to characterize biominerals. Using either Ca or C spectra, unique information has been obtained regarding amorphous biominerals and nanocrystal orientations. Building on these results, we demonstrate that recording XANES spectra of calcium carbonate at the oxygen K-edge enables polarization-dependent imaging contrast (PIC) mapping with unprecedented contrast, signal-to-noise ratio, and magnification. O and Ca spectra are presented for six calcium carbonate minerals: aragonite, calcite, vaterite, monohydrocalcite, and both hydrated and anhydrous amorphous calcium carbonate. The crystalline minerals reveal excellent agreement of the extent and direction of polarization dependences in simulated and experimental XANES spectra due to X-ray linear dichroism. This effect is particularly strong for aragonite, calcite, and vaterite. In natural biominerals, oxygen PIC-mapping generated high-magnification maps of unprecedented clarity from nacre and prismatic structures and their interface in Mytilus californianus shells. These maps revealed blocky aragonite crystals at the nacre-prismatic boundary and the narrowest calcite needle-prisms. In the tunic spicules of Herdmania momus, O PIC-mapping revealed the size and arrangement of some of the largest vaterite single crystals known. O spectroscopy therefore enables the simultaneous measurement of chemical and orientational information in CaCO3 biominerals and is thus a powerful means for analyzing these and other complex materials. As described here, PIC-mapping and spectroscopy at the O K-edge are methods for gathering valuable data that can be carried out using spectromicroscopy beamlines at most synchrotrons without the expense of additional equipment.
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Affiliation(s)
- Ross T DeVol
- Department of Physics, University of Wisconsin-Madison , 1150 University Avenue, Madison, Wisconsin 53706, United States
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Schweitzer MH, Zheng W, Cleland TP, Goodwin MB, Boatman E, Theil E, Marcus MA, Fakra SC. A role for iron and oxygen chemistry in preserving soft tissues, cells and molecules from deep time. Proc Biol Sci 2014; 281:20132741. [PMID: 24285202 PMCID: PMC3866414 DOI: 10.1098/rspb.2013.2741] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 10/29/2013] [Indexed: 01/15/2023] Open
Abstract
The persistence of original soft tissues in Mesozoic fossil bone is not explained by current chemical degradation models. We identified iron particles (goethite-αFeO(OH)) associated with soft tissues recovered from two Mesozoic dinosaurs, using transmission electron microscopy, electron energy loss spectroscopy, micro-X-ray diffraction and Fe micro-X-ray absorption near-edge structure. Iron chelators increased fossil tissue immunoreactivity to multiple antibodies dramatically, suggesting a role for iron in both preserving and masking proteins in fossil tissues. Haemoglobin (HB) increased tissue stability more than 200-fold, from approximately 3 days to more than two years at room temperature (25°C) in an ostrich blood vessel model developed to test post-mortem 'tissue fixation' by cross-linking or peroxidation. HB-induced solution hypoxia coupled with iron chelation enhances preservation as follows: HB + O2 > HB - O2 > -O2 >> +O2. The well-known O2/haeme interactions in the chemistry of life, such as respiration and bioenergetics, are complemented by O2/haeme interactions in the preservation of fossil soft tissues.
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Affiliation(s)
- Mary H. Schweitzer
- Marine, Earth, and Atmospheric Sciences, North Carolina State University, Campus Box 8208, Raleigh, NC 27695, USA
- North Carolina Museum of Natural Sciences, 11 West Jones Street, Raleigh, NC 27601, USA
| | - Wenxia Zheng
- Marine, Earth, and Atmospheric Sciences, North Carolina State University, Campus Box 8208, Raleigh, NC 27695, USA
| | - Timothy P. Cleland
- Marine, Earth, and Atmospheric Sciences, North Carolina State University, Campus Box 8208, Raleigh, NC 27695, USA
| | - Mark B. Goodwin
- Museum of Paleontology, University of California, Berkeley, CA 94720, USA
| | - Elizabeth Boatman
- Department of Material Sciences and Engineering, University of California, Berkeley, CA 94720, USA
| | - Elizabeth Theil
- CHORI (Children's Hospital Oakland Research Institute), 5700 Martin Luther King, Jr. Way, Oakland, CA 94609, USA
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC 27695-7622, USA
| | - Matthew A. Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sirine C. Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Kakoulli I, Prikhodko SV, Fischer C, Cilluffo M, Uribe M, Bechtel HA, Fakra SC, Marcus MA. Distribution and Chemical Speciation of Arsenic in Ancient Human Hair Using Synchrotron Radiation. Anal Chem 2013; 86:521-6. [DOI: 10.1021/ac4024439] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ioanna Kakoulli
- Materials
Science and Engineering Department, University of California Los Angeles, PO Box 951595, Engineering V, Los Angeles, CA 90095-1595, United States
- Cotsen
Institute of Archaeology, University of California Los Angeles, A210 Fowler Building, Los Angeles, CA 90095-1510, United States
| | - Sergey V. Prikhodko
- Materials
Science and Engineering Department, University of California Los Angeles, PO Box 951595, Engineering V, Los Angeles, CA 90095-1595, United States
| | - Christian Fischer
- Materials
Science and Engineering Department, University of California Los Angeles, PO Box 951595, Engineering V, Los Angeles, CA 90095-1595, United States
- Cotsen
Institute of Archaeology, University of California Los Angeles, A210 Fowler Building, Los Angeles, CA 90095-1510, United States
| | - Marianne Cilluffo
- Department
of Integrative Biology and Physiology, 1031 Terasaki Life Sciences Building, PO Box 957239, University of California Los Angeles, CA 90095-7230, United States
| | - Mauricio Uribe
- Facultad de Ciencias Sociales de la Universidad de Chile, Av. Capitán Ignacio Carrera Pinto N°1045, Ñuñoa, Santiago de Chile, Chile
| | - Hans A. Bechtel
- Advanced
Light
Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 6-2100, Berkeley, CA 94720-8226, United States
| | - Sirine C. Fakra
- Advanced
Light
Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 6-2100, Berkeley, CA 94720-8226, United States
| | - Matthew A. Marcus
- Advanced
Light
Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 6-2100, Berkeley, CA 94720-8226, United States
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Singer DM, Fox PM, Guo H, Marcus MA, Davis JA. Sorption and redox reactions of As(III) and As(V) within secondary mineral coatings on aquifer sediment grains. Environ Sci Technol 2013; 47:11569-11576. [PMID: 24041305 DOI: 10.1021/es402754f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Important reactive phenomena that affect the transport and fate of many elements occur at the mineral-water interface (MWI), including sorption and redox reactions. Fundamental knowledge of these phenomena are often based on observations of ideal mineral-water systems, for example, studies of molecular scale reactions on single crystal faces or the surfaces of pure mineral powders. Much less is understood about MWI in natural environments, which typically have nanometer to micrometer scale secondary mineral coatings on the surfaces of primary mineral grains. We examined sediment grain coatings from a well-characterized field site to determine the causes of rate limitations for arsenic (As) sorption and redox processes within the coatings. Sediments were obtained from the USGS field research site on Cape Cod, MA, and exposed to synthetic contaminated groundwater solutions. Uptake of As(III) and As(V) into the coatings was studied with a combination of electron microscopy and synchrotron techniques to assess concentration gradients and reactive processes, including electron transfer reactions. Transmission electron microscopy (TEM) and X-ray microprobe (XMP) analyses indicated that As was primarily associated with micrometer- to submicrometer aggregates of Mn-bearing nanoparticulate goethite. As(III) oxidation by this phase was observed but limited by the extent of exposed surface area of the goethite grains to the exterior of the mineral coatings. Secondary mineral coatings are potentially both sinks and sources of contaminants depending on the history of a contaminated site, and may need to be included explicitly in reactive transport models.
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Affiliation(s)
- David M Singer
- Earth Sciences Division, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
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Pushkar Y, Robison G, Sullivan B, Fu SX, Kohne M, Jiang W, Rohr S, Lai B, Marcus MA, Zakharova T, Zheng W. Aging results in copper accumulations in glial fibrillary acidic protein-positive cells in the subventricular zone. Aging Cell 2013; 12:823-32. [PMID: 23738916 DOI: 10.1111/acel.12112] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2013] [Indexed: 01/05/2023] Open
Abstract
Analysis of rodent brains with X-ray fluorescence (XRF) microscopy combined with immunohistochemistry allowed us to demonstrate that local Cu concentrations are thousands of times higher in the glia of the subventricular zone (SVZ) than in other cells. Using XRF microscopy with subcellular resolution and intracellular X-ray absorption spectroscopy we determined the copper (I) oxidation state and the sulfur ligand environment. Cu K-edge X-ray absorption near edge spectroscopy is consistent with Cu being bound as a multimetallic Cu-S cluster similar to one present in Cu-metallothionein. Analysis of age-related changes show that Cu content in astrocytes of the SVZ increases fourfold from 3 weeks to 9 months, while Cu concentration in other brain areas remain essentially constant. This increase in Cu correlates with a decrease in adult neurogenesis assessed using the Ki67 marker (both, however, can be age-related effects). We demonstrate that the Cu distribution and age-related concentration changes in the brain are highly cell specific.
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Affiliation(s)
- Yulia Pushkar
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Gregory Robison
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Brendan Sullivan
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Sherleen X. Fu
- School of Health Sciences; Purdue University; 550 Stadium Mall Drive; West Lafayette; IN; 47907; USA
| | - Meghan Kohne
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Wendy Jiang
- School of Health Sciences; Purdue University; 550 Stadium Mall Drive; West Lafayette; IN; 47907; USA
| | - Sven Rohr
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Barry Lai
- X-ray Science Division; Advanced Photon Source; Argonne National Laboratory; Building 401; 9700 S. Cass Ave.; Argonne; IL; 60439; USA
| | - Matthew A. Marcus
- Advanced Light Source; Lawrence Berkeley National Laboratory; 1 Cyclotron Rd.; Berkeley; CA; 94720; USA
| | - Taisiya Zakharova
- Department of Physics; Purdue University; 525 Northwestern Ave.; West Lafayette; IN; 47907; USA
| | - Wei Zheng
- School of Health Sciences; Purdue University; 550 Stadium Mall Drive; West Lafayette; IN; 47907; USA
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46
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Chen X, Liu L, Liu Z, Marcus MA, Wang WC, Oyler NA, Grass ME, Mao B, Glans PA, Yu PY, Guo J, Mao SS. Properties of disorder-engineered black titanium dioxide nanoparticles through hydrogenation. Sci Rep 2013; 3:1510. [PMID: 23528851 PMCID: PMC3607837 DOI: 10.1038/srep01510] [Citation(s) in RCA: 299] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 02/04/2013] [Indexed: 12/21/2022] Open
Abstract
The recent discovery of “black” TiO2 nanoparticles with visible and infrared absorption has triggered an explosion of interest in the application of TiO2 in a diverse set of solar energy systems; however, what a black TiO2 nanoparticle really is remains a mystery. Here we elucidate more properties and try to understand the inner workings of black TiO2 nanoparticles with hydrogenated disorders in a surface layer surrounding a crystalline core. Contrary to traditional findings, Ti3+ here is not responsible for the visible and infrared absorption of black TiO2, while there is evidence of mid-gap states above the valence band maximum due to the hydrogenated, engineered disorders. The hydrogen atoms, on the other hand, can undergo fast diffusion and exchange. The enhanced hydrogen mobility may be explained by the presence of the hydrogenated, disordered surface layer. This unique structure thus may give TiO2, one of the most-studied oxide materials, a renewed potential.
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Affiliation(s)
- Xiaobo Chen
- University of Missouri - Kansas City, Department of Chemistry, Kansas City, MO 64110, USA.
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Langner P, Mikutta C, Suess E, Marcus MA, Kretzschmar R. Spatial distribution and speciation of arsenic in peat studied with Microfocused X-ray fluorescence spectrometry and X-ray absorption spectroscopy. Environ Sci Technol 2013; 47:9706-14. [PMID: 23889036 DOI: 10.1021/es401315e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Arsenic binding by sulfhydryl groups of natural organic matter (NOM) was recently identified as an important As sequestration pathway in the naturally As-enriched minerotrophic peatland Gola di Lago, Switzerland. Here, we explore the microscale distribution, elemental correlations, and chemical speciation of As in the Gola di Lago peat. Thin sections of undisturbed peat samples from 0-37 cm and 200-249 cm depth were analyzed by synchrotron microfocused X-ray fluorescence (μ-XRF) spectrometry and X-ray absorption spectroscopy (μ-XAS). Additionally, peat samples were studied by bulk As, Fe, and S K-edge XAS. Micro-XRF analyses showed that As in the near-surface peat was mainly concentrated in 10-50 μm sized hotspots, identified by μ-XAS as realgar (α-As4S4). In the deep peat layer samples, however, As was more diffusely distributed and mostly associated with particulate NOM of varying decomposition stages. The NOM-associated As was present as trivalent As bound by sulfhydryl groups. Arsenopyrite (FeAsS) and arsenian pyrite (FeAsxS2-x) of <25 μm size, which have escaped detection by bulk As and Fe K-edge XAS, were found as minor As species in the peat. Bulk S K-edge XAS revealed that the deep peat layers were significantly enriched in reduced organic S species. Our findings suggest an authigenic formation of realgar and arsenopyrite in strongly reducing microenvironments of the peat and indicate that As(III)-NOM complexes are formed by the passive sorption of As(III) to NOM. This reaction appears to be favored by a combination of abundant reduced organic S and comparatively low As solution concentrations preventing the formation of secondary As-bearing sulfides.
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Affiliation(s)
- Peggy Langner
- Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zurich , 8092 Zurich, Switzerland
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Schmidt R, Tantoyotai P, Fakra SC, Marcus MA, Yang SI, Pickering IJ, Bañuelos GS, Hristova KR, Freeman JL. Selenium biotransformations in an engineered aquatic ecosystem for bioremediation of agricultural wastewater via brine shrimp production. Environ Sci Technol 2013; 47:5057-5065. [PMID: 23621086 DOI: 10.1021/es305001n] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An engineered aquatic ecosystem was specifically designed to bioremediate selenium (Se), occurring as oxidized inorganic selenate from hypersalinized agricultural drainage water while producing brine shrimp enriched in organic Se and omega-3 and omega-6 fatty acids for use in value added nutraceutical food supplements. Selenate was successfully bioremediated by microalgal metabolism into organic Se (seleno-amino acids) and partially removed via gaseous volatile Se formation. Furthermore, filter-feeding brine shrimp that accumulated this organic Se were removed by net harvest. Thriving in this engineered pond system, brine shrimp ( Artemia franciscana Kellogg) and brine fly (Ephydridae sp.) have major ecological relevance as important food sources for large populations of waterfowl, breeding, and migratory shore birds. This aquatic ecosystem was an ideal model for study because it mimics trophic interactions in a Se polluted wetland. Inorganic selenate in drainage water was metabolized differently in microalgae, bacteria, and diatoms where it was accumulated and reduced into various inorganic forms (selenite, selenide, or elemental Se) or partially incorporated into organic Se mainly as selenomethionine. Brine shrimp and brine fly larva then bioaccumulated Se from ingesting aquatic microorganisms and further metabolized Se predominately into organic Se forms. Importantly, adult brine flies, which hatched from aquatic larva, bioaccumulated the highest Se concentrations of all organisms tested.
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Affiliation(s)
- Radomir Schmidt
- Department of Land, Air and Water Resources, University of California, Davis, California 95616, United States
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Patel P, Swamy N, Klimovich G, Marcus MA, Holleman RC. A 2-month-old female infant with failure to thrive. Pediatr Ann 2013; 42:191-3. [PMID: 23641889 DOI: 10.3928/00904481-20130426-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Parth Patel
- University of South Carolina School of Medicine, Columbia, SC 29209, USA
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50
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Gross E, Liu JH, Alayoglu S, Marcus MA, Fakra SC, Toste FD, Somorjai GA. Asymmetric catalysis at the mesoscale: gold nanoclusters embedded in chiral self-assembled monolayer as heterogeneous catalyst for asymmetric reactions. J Am Chem Soc 2013; 135:3881-6. [PMID: 23406377 DOI: 10.1021/ja310640b] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Research to develop highly versatile, chiral, heterogeneous catalysts for asymmetric organic transformations, without quenching the catalytic reactivity, has met with limited success. While chiral supramolecular structures, connected by weak bonds, are highly active for homogeneous asymmetric catalysis, their application in heterogeneous catalysis is rare. In this work, asymmetric catalyst was prepared by encapsulating metallic nanoclusters in chiral self-assembled monolayer (SAM), immobilized on mesoporous SiO2 support. Using olefin cyclopropanation as an example, it was demonstrated that by controlling the SAM properties, asymmetric reactions can be catalyzed by Au clusters embedded in chiral SAM. Up to 50% enantioselectivity with high diastereoselectivity were obtained while employing Au nanoclusters coated with SAM peptides as heterogeneous catalyst for the formation of cyclopropane-containing products. Spectroscopic measurements correlated the improved enantioselectivity with the formation of a hydrogen-bonding network in the chiral SAM. These results demonstrate the synergetic effect of the catalytically active metallic sites and the surrounding chiral SAM for the formation of a mesoscale enantioselective catalyst.
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Affiliation(s)
- Elad Gross
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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