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Zhang Z, Zhang J, Chen H, Han C, Chen Y, Zhan X, Liu Y. The shell formation mechanism of Turbo argyrostomus based on ultrastructure and transcriptome analysis. Gene 2024; 927:148747. [PMID: 38972557 DOI: 10.1016/j.gene.2024.148747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 06/18/2024] [Accepted: 07/02/2024] [Indexed: 07/09/2024]
Abstract
The gold inner shell of Turbo argyrostomus is an important morphological classification characteristic in Gastropoda. However, the gene sets responsible for shell formation in gastropods remain poorly explored. In this study, we investigated the microstructure using scanning electron microscopy (SEM), hematoxylin-eosin (HE) and Alcian blue staining-periodic acid-Schiff (AB-PAS) staining. The SEM results illustrated that the T. argyrostomus shell exhibited a special "sandwich" microstructure. The results of histological observation demonstrated two major cell types: adipocytes and mucin cells. A total of 318 differentially expressed genes were identified between edge mantle and central mantle, among which whey acidic protein, N66, and nacre-like proteins, and Lam G and EGF domains may be related to shell microstructure. 22.39% - 25.20% of the mucin genes had biomineralization related domains, which supported for the relationship between mucins and shell formation. Moreover, this study revealed energy distribution differences between the edge mantle and central mantle. These results provide insights for further understanding of the biomineralization mechanism in Gastropoda.
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Affiliation(s)
- Zhijie Zhang
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Jiayi Zhang
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Hengda Chen
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Changqing Han
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Yi Chen
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China; School of Ecology, Hainan University, Haikou 570228, China
| | - Xin Zhan
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan Province, Hainan University Haikou 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China.
| | - Yibing Liu
- Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao 266003, China.
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2
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Mallette AJ, Shilpa K, Rimer JD. The Current Understanding of Mechanistic Pathways in Zeolite Crystallization. Chem Rev 2024; 124:3416-3493. [PMID: 38484327 DOI: 10.1021/acs.chemrev.3c00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Zeolite catalysts and adsorbents have been an integral part of many commercial processes and are projected to play a significant role in emerging technologies to address the changing energy and environmental landscapes. The ability to rationally design zeolites with tailored properties relies on a fundamental understanding of crystallization pathways to strategically manipulate processes of nucleation and growth. The complexity of zeolite growth media engenders a diversity of crystallization mechanisms that can manifest at different synthesis stages. In this review, we discuss the current understanding of classical and nonclassical pathways associated with the formation of (alumino)silicate zeolites. We begin with a brief overview of zeolite history and seminal advancements, followed by a comprehensive discussion of different classes of zeolite precursors with respect to their methods of assembly and physicochemical properties. The following two sections provide detailed discussions of nucleation and growth pathways wherein we emphasize general trends and highlight specific observations for select zeolite framework types. We then close with conclusions and future outlook to summarize key hypotheses, current knowledge gaps, and potential opportunities to guide zeolite synthesis toward a more exact science.
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Affiliation(s)
- Adam J Mallette
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Kumari Shilpa
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Jeffrey D Rimer
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
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3
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Carpenter BP, Talosig AR, Rose B, Di Palma G, Patterson JP. Understanding and controlling the nucleation and growth of metal-organic frameworks. Chem Soc Rev 2023; 52:6918-6937. [PMID: 37796101 DOI: 10.1039/d3cs00312d] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Metal-organic frameworks offer a diverse landscape of building blocks to design high performance materials for implications in almost every major industry. With this diversity stems complex crystallization mechanisms with various pathways and intermediates. Crystallization studies have been key to the advancement of countless biological and synthetic systems, with MOFs being no exception. This review provides an overview of the current theories and fundamental chemistry used to decipher MOF crystallization. We then discuss how intrinsic and extrinsic synthetic parameters can be used as tools to modulate the crystallization pathway to produce MOF crystals with finely tuned physical and chemical properties. Experimental and computational methods are provided to guide the probing of MOF crystal formation on the molecular and bulk scale. Lastly, we summarize the recent major advances in the field and our outlook on the exciting future of MOF crystallization.
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Affiliation(s)
- Brooke P Carpenter
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.
| | - A Rain Talosig
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.
| | - Ben Rose
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.
| | - Giuseppe Di Palma
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.
| | - Joseph P Patterson
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.
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4
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Zhou Y, Liu K, Zhang H. Biomimetic Mineralization: From Microscopic to Macroscopic Materials and Their Biomedical Applications. ACS APPLIED BIO MATERIALS 2023; 6:3516-3531. [PMID: 36944024 DOI: 10.1021/acsabm.3c00109] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Biomineralization is an attractive pathway to produce mineral-based biomaterials with high performance and hierarchical structures. To date, the biomineralization process and mechanism have been extensively studied, especially for the formation of bone, teeth, and nacre. Inspired by those, abundant biomimetic mineralized materials have been fabricated for biomedical applications. Those bioinspired materials generally exhibit great mechanical properties and biological functions. Nevertheless, substantial gaps remain between biomimetic materials and natural materials, particularly with respect to mechanical properties and mutiscale structures. This Review summarizes the recent progress of micro- and macroscopic biomimetic mineralization from the perspective of materials synthesis and biomedical applications. To begin with, we discuss the progress of biomimetic mineralization at the microscopic level. The mechanical strength, stability, and functionality of the nano- and micromaterials are significantly improved by introducing biominerals, such as DNA nanostructures, nanovaccines, and living cells. Next, numerous biomimetic strategies based on biomineralization at the macroscopic scale are highlighted, including in situ mineralization and bottom-up assembly of mineralized building blocks. Finally, challenges and future perspectives regarding the development of biomimetic mineralization are also presented with the aim of offering insights for the rational design and fabrication of next-generation biomimetic mineralized materials.
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Affiliation(s)
- Yusai Zhou
- Engineering Research Center of Advanced Rare Earth Materials, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Kai Liu
- Engineering Research Center of Advanced Rare Earth Materials, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Hongjie Zhang
- Engineering Research Center of Advanced Rare Earth Materials, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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5
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Kashchiev D. Hierarchical approximations to the nucleation work in the entire range of metastability. J Chem Phys 2023; 159:094501. [PMID: 37655765 DOI: 10.1063/5.0164821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 08/07/2023] [Indexed: 09/02/2023] Open
Abstract
The work W to form a nucleus (also known as the critical nucleus) is a key quantity in the description of nucleation phenomena because of its exponentially strong effect on the nucleation rate. The present study provides a general approximate expression for W, which comprises a hierarchy of approximations to the dependence of W on the experimentally controlled overpressure Δp of a nucleating multicomponent phase. This general expression is used to derive explicit formulas for the lowest-order members of the W(Δp) hierarchy as well as for the respective lowest-order approximations to the Δp dependences of the nucleus surface tension, the nucleus radius, the Gibbs-Tolman length, and the stationary nucleation rate. The second-order and the third-order approximations to the W(Δp) dependence are confronted with available W(Δp) data, and the latter is found to agree very well with the data. The results obtained are applicable to homogeneous single-component or multicomponent nucleation from the binodal to the spinodal of the old phase, i.e., in the entire range of the old-phase metastability.
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Affiliation(s)
- Dimo Kashchiev
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, ul. Acad. G. Bonchev 11, Sofia 1113, Bulgaria
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6
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Wang Q, Yuan B, Huang W, Ping H, Xie J, Wang K, Wang W, Zou Z, Fu Z. Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism. Natl Sci Rev 2023; 10:nwad014. [PMID: 36960223 PMCID: PMC10029847 DOI: 10.1093/nsr/nwad014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 12/15/2022] [Accepted: 01/02/2023] [Indexed: 01/13/2023] Open
Abstract
Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via attachment of amorphous calcium carbonate (ACC) nanoparticles in the presence of inorganic zinc ions. Moreover, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the attachment and occlusion during calcite growth. The cation-mediated particle attachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.
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Affiliation(s)
| | | | - Wenyang Huang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Hang Ping
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Jingjing Xie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Kun Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Weimin Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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7
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Li D, Chen Q, Chun J, Fichthorn K, De Yoreo J, Zheng H. Nanoparticle Assembly and Oriented Attachment: Correlating Controlling Factors to the Resulting Structures. Chem Rev 2023; 123:3127-3159. [PMID: 36802554 DOI: 10.1021/acs.chemrev.2c00700] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Nanoparticle assembly and attachment are common pathways of crystal growth by which particles organize into larger scale materials with hierarchical structure and long-range order. In particular, oriented attachment (OA), which is a special type of particle assembly, has attracted great attention in recent years because of the wide range of material structures that result from this process, such as one-dimensional (1D) nanowires, two-dimensional (2D) sheets, three-dimensional (3D) branched structures, twinned crystals, defects, etc. Utilizing in situ transmission electron microscopy techniques, researchers observed orientation-specific forces that act over short distances (∼1 nm) from the particle surfaces and drive the OA process. Integrating recently developed 3D fast force mapping via atomic force microscopy with theories and simulations, researchers have resolved the near-surface solution structure, the molecular details of charge states at particle/fluid interfaces, inhomogeneity of surface charges, and dielectric/magnetic properties of particles that influence short- and long-range forces, such as electrostatic, van der Waals, hydration, and dipole-dipole forces. In this review, we discuss the fundamental principles for understanding particle assembly and attachment processes, and the controlling factors and resulting structures. We review recent progress in the field via examples of both experiments and modeling, and discuss current developments and the future outlook.
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Affiliation(s)
- Dongsheng Li
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Qian Chen
- Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Jaehun Chun
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Levich Institute and Department of Chemical Engineering, CUNY City College of New York; New York, New York 10031, United States
| | - Kristen Fichthorn
- Department of Chemical Engineering, The Pennsylvania State University; University Park, Pennsylvania 16802, United States
| | - James De Yoreo
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Materials Science and Engineering, University of Washington, Seattle Washington 98195, United States
| | - Haimei Zheng
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
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8
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Aasen A, Wilhelmsen Ø, Hammer M, Reguera D. Free energy of critical droplets-from the binodal to the spinodal. J Chem Phys 2023; 158:114108. [PMID: 36948791 DOI: 10.1063/5.0142533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Arguably, the main challenge of nucleation theory is to accurately evaluate the work of formation of a critical embryo in the new phase, which governs the nucleation rate. In Classical Nucleation Theory (CNT), this work of formation is estimated using the capillarity approximation, which relies on the value of the planar surface tension. This approximation has been blamed for the large discrepancies between predictions from CNT and experiments. In this work, we present a study of the free energy of formation of critical clusters of the Lennard-Jones fluid truncated and shifted at 2.5σ using Monte Carlo simulations, density gradient theory, and density functional theory. We find that density gradient theory and density functional theory accurately reproduce molecular simulation results for critical droplet sizes and their free energies. The capillarity approximation grossly overestimates the free energy of small droplets. The incorporation of curvature corrections up to the second order with the Helfrich expansion greatly remedies this and performs very well for most of the experimentally accessible regions. However, it is imprecise for the smallest droplets and largest metastabilities since it does not account for a vanishing nucleation barrier at the spinodal. To remedy this, we propose a scaling function that uses all relevant ingredients without adding fitting parameters. The scaling function reproduces accurately the free energy of the formation of critical droplets for the entire metastability range and all temperatures examined and deviates from density gradient theory by less than one kBT.
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Affiliation(s)
- Ailo Aasen
- SINTEF Energy Research, NO-7465 Trondheim, Norway
| | | | | | - David Reguera
- Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
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9
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Zhao H, Zhu Y, Ye H, He Y, Li H, Sun Y, Yang F, Wang R. Atomic-Scale Structure Dynamics of Nanocrystals Revealed By In Situ and Environmental Transmission Electron Microscopy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022:e2206911. [PMID: 36153832 DOI: 10.1002/adma.202206911] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2022] [Indexed: 06/16/2023]
Abstract
Nanocrystals are of great importance in material sciences and industry. Engineering nanocrystals with desired structures and properties is no doubt one of the most important challenges in the field, which requires deep insight into atomic-scale dynamics of nanocrystals during the process. The rapid developments of in situ transmission electron microscopy (TEM), especially environmental TEM, reveal insights into nanocrystals to digest. According to the considerable progress based on in situ electron microscopy, a comprehensive review on nanocrystal dynamics from three aspects: nucleation and growth, structure evolution, and dynamics in reaction conditions are given. In the nucleation and growth part, existing nucleation theories and growth pathways are organized based on liquid and gas-solid phases. In the structure evolution part, the focus is on in-depth mechanistic understanding of the evolution, including defects, phase, and disorder/order transitions. In the part of dynamics in reaction conditions, solid-solid and gas-solid interfaces of nanocrystals in atmosphere are discussed and the structure-property relationship is correlated. Even though impressive progress is made, additional efforts are required to develop the integrated and operando TEM methodologies for unveiling nanocrystal dynamics with high spatial, energy, and temporal resolutions.
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Affiliation(s)
- Haofei Zhao
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yuchen Zhu
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Huanyu Ye
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yang He
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Hao Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yifei Sun
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Feng Yang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Rongming Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
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10
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de Andrade MO, Haqshenas R, Pahk KJ, Saffari N. Mechanisms of nuclei growth in ultrasound bubble nucleation. ULTRASONICS SONOCHEMISTRY 2022; 88:106091. [PMID: 35839705 PMCID: PMC9287806 DOI: 10.1016/j.ultsonch.2022.106091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/20/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
This paper interrogates the intersections between bubble dynamics and classical nucleation theory (CNT) towards constructing a model that describes intermediary nucleation events between the extrema of cavitation and boiling. We employ Zeldovich's hydrodynamic approach to obtain a description of bubble nuclei that grow simultaneously via hydrodynamic excitation by the acoustic field and vapour transport. By quantifying the relative dominance of both mechanisms, it is then possible to discern the extent to which viscosity, inertia, surface tension and vapour transport shape the growth of bubble nuclei through non-dimensional numbers that naturally arise within the theory. The first non-dimensional number Φ12/Φ2 is analogous to the Laplace number, representing the balance between surface tension and inertial constraints to viscous effects. The second non-dimensional number δ represents how enthalpy transport into the bubble can reduce nucleation rates by cooling the surrounding liquid. This formulation adds to the current understanding of ultrasound bubble nucleation by accounting for bubble dynamics during nucleation, quantifying the physical distinctions between "boiling" and "cavitation" bubbles through non-dimensional parameters, and outlining the characteristic timescales of nucleation according to the growth mechanism of bubbles throughout the histotripsy temperature range. We observed in our simulations that viscous effects control the process of ultrasound nucleation in water-like media throughout the 0-120 °C temperature range, although this dominance decreases with increasing temperatures. Enthalpy transport was found to reduce nucleation rates for increasing temperatures. This effect becomes significant at temperatures above 30 °C and favours the creation of fewer nuclei that are larger in size. Conversely, negligible enthalpy transport at lower temperatures can enable the nucleation of dense clusters of small nuclei, such as cavitation clouds. We find that nuclei growth as modelled by the Rayleigh-Plesset equation occurs over shorter timescales than as modelled by vapour-dominated growth. This suggests that the first stage of bubble nuclei growth is hydrodynamic, and vapour transport effects can only be observed over longer timescales. Finally, we propose that this framework can be used for comparison between different experiments in bubble nucleation, towards standardisation and dosimetry of protocols.
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Affiliation(s)
| | - Reza Haqshenas
- UCL Mechanical Engineering, University College London, London, United Kingdom
| | - Ki Joo Pahk
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Nader Saffari
- UCL Mechanical Engineering, University College London, London, United Kingdom
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11
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Ge X, Zhang W, Putnis CV, Wang L. Direct observation of humic acid-promoted hydrolysis of phytate through stabilizing a conserved catalytic domain in phytase. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:1082-1093. [PMID: 35730733 DOI: 10.1039/d2em00065b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
As a potential phosphorus (P) pool, the enzymatic hydrolysis of organic phosphorus (Po) is of fundamental importance due to the release of bioavailable inorganic phosphate (Pi) for agronomic P sustainability. However, little is known about the role of soil organic matter (SOM) in the hydrolysis process of phytate by phytase and the subsequent chemical behaviors involving the hydrolysis product (Pi) at different soil interfaces. Here, by using liquid-cell atomic force microscopy (AFM), we present a model system to in situ quantify the nucleation kinetics of phytase-released Pi when precipitating with representative soil multivalent cations (Ca2+/Fe3+) on typical soil mineral/organic interfaces in the presence/absence of humic acid (HA), which involves complex phytase-interface-HA interactions. We observed that a higher HA concentration resulted in a faster nucleation rate of amorphous calcium/iron phosphate (ACP/AIP) on bare and organically-coated (-OH/-COOH) mica surfaces compared with the HA-free control. Besides, the nucleation rate of ACP/AIP induced by organic interfaces was much more significant than that induced by clay mineral interfaces. By combining enzyme activity/stability experiments and AFM-based PeakForce quantitative nanomechanical mapping (PF-QNM) measurements, we directly quantified the contribution of noncovalent phytase-HA interaction to the increase in enzymatic activity from complex phytase-interface-HA interactions. Furthermore, the direct complexation of phytase-HA resulted in the stabilization of a conserved active catalytic domain (ACD) in phytase through the enhanced formation of both an ordered, stereochemically-favored catalytic domain and an unordered non-catalytic domain, which was revealed by Raman secondary structure determination. The results provide direct insights into how HA regulates the catalytic activity of phytase controlling Po fates and how soil interfaces determine the behaviors of released Pi to affect its availability, and thereby contribute to P sustainability in soils.
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Affiliation(s)
- Xinfei Ge
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Wenjun Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Christine V Putnis
- Institut für Mineralogie, University of Münster, Münster 48149, Germany
- School of Molecular and Life Science, Curtin University, Perth 6845, Australia
| | - Lijun Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
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12
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Casting a bright light on Ostwald's rule of stages. Proc Natl Acad Sci U S A 2022; 119:2121661119. [PMID: 35131933 PMCID: PMC8851489 DOI: 10.1073/pnas.2121661119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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De Yoreo JJ, Nakouzi E, Jin B, Chun J, Mundy CJ. Assembly-based pathways of crystallization. Faraday Discuss 2022; 235:9-35. [DOI: 10.1039/d2fd00061j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solution crystallization of materials ranging from simple salts to complex supramolecular assemblies has long been viewed through the lens of classical nucleation and growth theories in which monomeric building blocks...
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14
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Chen C, Qian J, Chen H, Zhang H, Yang L, Jiang X, Zhang X, Li X, Ma J, Sun D. Molecular Origin of the Biologically Accelerated Mineralization of Hydroxyapatite on Bacterial Cellulose for More Robust Nanocomposites. NANO LETTERS 2021; 21:10292-10300. [PMID: 34846904 DOI: 10.1021/acs.nanolett.1c03411] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biomineralization generates hierarchically structured minerals with vital biological functions in organisms. This strategy has been adopted to construct complex architectures to achieve similar functionalities, mostly under chemical environments mimicking biological components. The molecular origin of the biofacilitated mineralization process is elusive. Herein, we describe the mineralization of hydroxyapatite (HAp) accompanying the biological secretion of nanocellulose by Acetobacter xylinum. In comparison with mature cellulose, the newly biosynthesized cellulose molecules greatly accelerate the nucleation rate and facilitate the uniform distribution of HAp crystals, thereby generating composites with a higher Young modulus. Both simulations and experiments indicate that the biological metabolism condition allows the easier capture of calcium ions by the more abundant hydroxyl groups on the glucan chain before the formation of hydrogen bonding, for the subsequent growth of HAp crystals. Our work provides more insights into the biologically accelerated mineralization process and presents a different methodology for the generation of biomimetic nanocomposites.
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Affiliation(s)
- Chuntao Chen
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Jieshu Qian
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Hongwei Chen
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University, 163 Xianlin Road, Nanjing 210023, People's Republic of China
| | - Heng Zhang
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Lei Yang
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Xiaohong Jiang
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Xuan Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
| | - Xiaoyu Li
- Department of Polymer Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Jing Ma
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University, 163 Xianlin Road, Nanjing 210023, People's Republic of China
| | - Dongping Sun
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing 210094, People's Republic of China
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de Andrade MO, Haqshenas SR, Pahk KJ, Saffari N. Modeling the Physics of Bubble Nucleation in Histotripsy. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2021; 68:2871-2883. [PMID: 34260353 DOI: 10.1109/tuffc.2021.3097118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This work aims to establish a theoretical framework for the modeling of bubble nucleation in histotripsy. A phenomenological version of the classical nucleation theory was parametrized with histotripsy experimental data, fitting a temperature-dependent activity factor that harmonizes theoretical predictions and experimental data for bubble nucleation at both high and low temperatures. Simulations of histotripsy pressure and temperature fields are then used in order to understand spatial and temporal properties of bubble nucleation at varying sonication conditions. This modeling framework offers a thermodynamic understanding on the role of the ultrasound frequency, waveforms, peak focal pressures, and duty cycle on patterns of ultrasound-induced bubble nucleation. It was found that at temperatures lower than 50 °C, nucleation rates are more appreciable at very large negative pressures such as -30 MPa. For focal peak-negative pressures of -15 MPa, characteristic of boiling histotripsy, nucleation rates grow by 20 orders of magnitude in the temperature interval 60 °C-100 °C.
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16
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An Analysis of Acoustic Cavitation Thresholds of Water Based on the Incubation Time Criterion Approach. FLUIDS 2021. [DOI: 10.3390/fluids6040134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Researchers are still working on the development of models that facilitate the accurate estimation of acoustic cavitation threshold. In this paper, we have analyzed the possibility of using the incubation time criterion to calculate the threshold of the onset of acoustic cavitation depending on the ultrasound frequency, hydrostatic pressure, and temperature of a liquid. This criterion has been successfully used by earlier studies to calculate the dynamic strength of solids and has recently been proposed in an adapted version for calculating the cavitation threshold. The analysis is carried out for various experimental data for water presented in the literature. Although the criterion assumes the use of macroparameters of a liquid, we also considered the possibility of taking into account the size of cavitation nuclei and its influence on the calculation result. We compared the results of cavitation threshold calculations done using the incubation time criterion of cavitation and the classical nucleation theory. Our results showed that the incubation time criterion more qualitatively models the results of experiments using only three parameters of the liquid. We then discussed a possible relationship between the parameters of the two approaches. The results of our study showed that the criterion under consideration has a good potential and can be conveniently used for applications where there are special requirements for ultrasound parameters, maximum negative pressure, and liquid temperature.
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17
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Goetz SK, Mahamid J. Visualizing Molecular Architectures of Cellular Condensates: Hints of Complex Coacervation Scenarios. Dev Cell 2021; 55:97-107. [PMID: 33049214 DOI: 10.1016/j.devcel.2020.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/15/2020] [Accepted: 09/05/2020] [Indexed: 02/09/2023]
Abstract
In the last decade, liquid-liquid phase separation has emerged as a fundamental principle in the organization of crowded cellular environments into functionally distinct membraneless compartments. It is now established that biomolecules can condense into various physical phases, traditionally defined for simple polymer systems, and more recently elucidated by techniques employed in life sciences. We review pioneering cryo-electron tomography studies that have begun to unravel a wide spectrum of molecular architectures, ranging from amorphous to crystalline assemblies, that underlie cellular condensates. These observations bring into question current interpretations of microscopic phase behavior. Furthermore, by examining emerging concepts of non-classical phase separation pathways in small-molecule crystallization, we draw parallels with biomolecular condensation that highlight aspects not yet fully explored. In particular, transient and metastable intermediates that might be challenging to capture experimentally inside cells could be probed through computational simulations and enable a multi-scale understanding of the subcellular organization governed by distinct phases.
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Affiliation(s)
- Sara Kathrin Goetz
- Structural and Computational Biology Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany; Collaboration for Joint PhD Degree between EMBL and Heidelberg University, Faculty of Biosciences, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany
| | - Julia Mahamid
- Structural and Computational Biology Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany.
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18
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Li B, Cui Y, Wang X, Tang R. Novel nanomaterial-organism hybrids with biomedical potential. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 13:e1706. [PMID: 33644977 DOI: 10.1002/wnan.1706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/29/2022]
Abstract
Instinctive hierarchically biomineralized structures of various organisms, such as eggs, algae, and magnetotactic bacteria, afford extra protection and distinct performance, which endow fragile organisms with a tenacious ability to adapt and survive. However, spontaneous formation of hybrid materials is difficult for most organisms in nature. Rapid development of chemistry and materials science successfully obtained the combinations of organisms with nanomaterials by biomimetic mineralization thus demonstrating the reproduction of the structures and functions and generation of novel functions that organisms do not possess. The rational design of biomaterial-organism hybridization can control biological recognition, interactions, and metabolism of the organisms. Thus, nanomaterial-organism hybrids represent a next generation of organism engineering with great potential biomedical applications. This review summarizes recent advances in material-directed organism engineering and is mainly focused on biomimetic mineralization technologies and their outstanding biomedical applications. Three representative types of biomimetic mineralization are systematically introduced, including external mineralization, internal mineralization, and genetic engineering mineralization. The methods involving hybridization of nanomaterials and organisms based on biomimetic mineralization strategies are described. These strategies resulted in applications of various nanomaterial-organism hybrids with multiplex functions in cell engineering, cancer treatment, and vaccine improvement. Unlike classical biological approaches, this material-based bioregulation is universal, effective, and inexpensive. In particular, instead of traditional medical solutions, the integration of nanomaterials and organisms may exploit novel strategies to solve current biomedical problems. This article is categorized under: Implantable Materials and Surgical Technologies > Nanomaterials and Implants Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
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Affiliation(s)
- Benke Li
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yihao Cui
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, China.,Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, China
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Kashchiev D. Nucleation work, surface tension, and Gibbs-Tolman length for nucleus of any size. J Chem Phys 2020; 153:124509. [PMID: 33003745 DOI: 10.1063/5.0021337] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In the framework of the Gibbs approach to nucleation thermodynamics, expressions are derived for the nucleation work, nucleus size, surface tension, and Gibbs-Tolman length in homogeneous single-component nucleation at a fixed temperature. These expressions are in terms of the experimentally controlled overpressure of the nucleating phase and are valid for the entire overpressure range, i.e., for nucleus of any size. Analysis of available data for bubble and droplet nucleation in Lennard-Jones fluid shows that the theory describes well the data by means of a single free parameter, the Gibbs-Tolman length of the planar liquid/vapor interface. It is found that this length is about one-tenth of the Lennard-Jones molecular-diameter parameter and that it is positive for the bubble nucleus and negative for the droplet nucleus. In a sufficiently narrow temperature range, the nucleation work, nucleus radius, scaled surface tension, and Gibbs-Tolman length are apparently universal functions of scaled overpressure.
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Affiliation(s)
- Dimo Kashchiev
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, ul. Acad. G. Bonchev 11, Sofia 1113, Bulgaria
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20
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Andalibi MR, Bowen P, Carino A, Testino A. Global uncertainty-sensitivity analysis on mechanistic kinetic models: From model assessment to theory-driven design of nanoparticles. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2020.106971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Cao K, Biskupek J, Stoppiello CT, McSweeney RL, Chamberlain TW, Liu Z, Suenaga K, Skowron ST, Besley E, Khlobystov AN, Kaiser U. Atomic mechanism of metal crystal nucleus formation in a single-walled carbon nanotube. Nat Chem 2020; 12:921-928. [DOI: 10.1038/s41557-020-0538-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/31/2020] [Indexed: 11/09/2022]
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Affiliation(s)
- Jim De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
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Affiliation(s)
- Peter G. Vekilov
- Department of Chemical and Biomolecular Engineering and Department of Chemistry, University of Houston, Houston, Texas 77204, United States
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24
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Zhao P, Wang L, Han D, Bao Y, Xie C, Guo M, Teng R. Experimental and Molecular Simulation Studies of the Attachment Behavior of Photoinitiator XBPO Crystals in Different Solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9308-9317. [PMID: 31268334 DOI: 10.1021/acs.langmuir.9b00909] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aggregation of crystals is a common phenomenon during the crystallization process. However, the formation mechanism of the aggregates remains elusive. In this work, we combine experiments with molecular simulations to investigate the attachment behavior of an organic compound photoinitiator bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide (XBPO) in different solvents. The simulation results were highly in line with the experimental results. The results indicate that the aggregation behavior occurs on the high-energy surface (1 0 0) and the attachment angle is 0° during the solvothermal process. Meanwhile, solvents play the critical role in the formation of aggregated particles. It was found that the solvents with high Kamlet-Taft dipolarity/polarizability can promote the aggregation behavior of photoinitiator XBPO crystals. Furthermore, a solvent-mediated growth mechanism assisted by "oriented attachment"-like and Ostwald ripening mechanisms was proposed to elucidate the growth and aggregation of particles. We anticipate that this study will provide a comprehensive understanding of the attachment behavior and be helpful to control the aggregation of crystals.
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Affiliation(s)
- Pei Zhao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
| | - Liping Wang
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
| | - Dandan Han
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
| | - Ying Bao
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency , Tianjin University , Tianjin , 300072 , People's Republic of China
| | - Chuang Xie
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
| | - Mingxia Guo
- Department of Chemical Engineering , Imperial College London, South Kensington Campus , London SW7 2AZ , U.K
| | - Rugang Teng
- School of Chemical Engineering and Technology and State Key Laboratory of Chemical Engineering , Tianjin University , Tianjin 300072 , China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072 , China
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25
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de Andrade MO, Haqshenas SR, Pahk KJ, Saffari N. The effects of ultrasound pressure and temperature fields in millisecond bubble nucleation. ULTRASONICS SONOCHEMISTRY 2019; 55:262-272. [PMID: 30952547 DOI: 10.1016/j.ultsonch.2019.01.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 01/11/2019] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
A phenomenological implementation of Classical Nucleation Theory (CNT) is employed to investigate the connection between high intensity focused ultrasound (HIFU) pressure and temperature fields with the energetic requirements of bubble nucleation. As a case study, boiling histotripsy in tissue-mimicking phantoms is modelled. The physics of key components in the implementation of CNT in HIFU conditions such as the derivation of nucleation pressure thresholds and approximations regarding the surface tension of the liquid are reviewed and discussed. Simulations show that the acoustic pressure is the ultimate trigger for millisecond bubble nucleation in boiling histotripsy, however, HIFU heat deposition facilitates nucleation by lowering nucleation pressure thresholds. Nucleation thus occurs preferentially at the regions of highest heat deposition within the HIFU field. This implies that bubble nucleation subsequent to millisecond HIFU heat deposition can take place at temperatures below 100 °C as long as the focal HIFU peak negative pressure exceeds the temperature-dependent nucleation threshold. It is also found that the magnitude of nucleation pressure thresholds decreases with decreasing frequencies. Overall, results indicate that it is not possible to separate thermal and mechanical effects of HIFU in the nucleation of bubbles for timescales of a few milliseconds. This methodology provides a promising framework for studying time and space dependencies of the energetics of bubble nucleation within a HIFU field.
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Affiliation(s)
| | - Seyyed Reza Haqshenas
- UCL Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
| | - Ki Joo Pahk
- Center for Bionics, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Nader Saffari
- UCL Mechanical Engineering, University College London, London WC1E 7JE, United Kingdom
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26
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27
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Mineral scaling in membrane desalination: Mechanisms, mitigation strategies, and feasibility of scaling-resistant membranes. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.02.049] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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28
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Crystal growth of magnesium oxide nanocompounds for wetting alteration of carbonate surfaces. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00805-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Fei L, Gan X, Ng SM, Wang H, Xu M, Lu W, Zhou Y, Leung CW, Mak CL, Wang Y. Observable Two-Step Nucleation Mechanism in Solid-State Formation of Tungsten Carbide. ACS NANO 2019; 13:681-688. [PMID: 30475583 DOI: 10.1021/acsnano.8b07864] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The nucleation of crystals from ubiquitous solid-state reactions impacts a wide range of natural and synthetic processes and is fundamental to physical and chemical synthesis. However, the microscopic organization mechanism of amorphous precursors to nanoscale clusters of ordered atoms (nucleus) in an all-solid environment is inaccessible by common experimental probes. Here, by using in situ transmission electron microscopy in combination with theoretical simulations, we show in the reactive formation of a metal carbide that nucleation actually occurs via a two-step mechanism, in which a spinodal-structured amorphous intermediate reorganizes from an amorphous precursor and precedes the emergence of a crystalline nucleus, rather than direct one-step nucleation from classical consideration. We further isolated a series of sophisticated dynamics during formation and development of the nucleus in real-space and interpreted them by thermodynamic favorability. We anticipate that such an indirect organization mechanism which contains a metastable intermedium among the free energy gap between precursors and nanocrystals has its chance in underlying most solid-state crystallizations, whereas the as-established experimental method represents a step forward in exploring fundamentals in chemical reaction, material engineering, etc.
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Affiliation(s)
- Linfeng Fei
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Xianglai Gan
- School of Materials Science and Engineering , Nanchang University , Nanchang , Jiangxi 330031 , China
| | - Sheung Mei Ng
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Hui Wang
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
- School of Materials Science and Engineering , Nanchang University , Nanchang , Jiangxi 330031 , China
| | - Ming Xu
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Wei Lu
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Yanchun Zhou
- Science and Technology on Advanced Functional Composite Laboratory , Aerospace Research Institute of Materials & Processing Technology , Beijing 100076 , China
| | - Chi Wah Leung
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Chee-Leung Mak
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Yu Wang
- School of Materials Science and Engineering , Nanchang University , Nanchang , Jiangxi 330031 , China
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30
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31
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Richard D, Speck T. Crystallization of hard spheres revisited. II. Thermodynamic modeling, nucleation work, and the surface of tension. J Chem Phys 2018; 148:224102. [DOI: 10.1063/1.5025394] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- David Richard
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7-9, 55128 Mainz, Germany
| | - Thomas Speck
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7-9, 55128 Mainz, Germany
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32
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33
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Ma X, Zhang S, Jiao F, Newcomb CJ, Zhang Y, Prakash A, Liao Z, Baer MD, Mundy CJ, Pfaendtner J, Noy A, Chen CL, De Yoreo JJ. Tuning crystallization pathways through sequence engineering of biomimetic polymers. NATURE MATERIALS 2017; 16:767-774. [PMID: 28414316 DOI: 10.1038/nmat4891] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 03/09/2017] [Indexed: 06/07/2023]
Abstract
Two-step nucleation pathways in which disordered, amorphous, or dense liquid states precede the appearance of crystalline phases have been reported for a wide range of materials, but the dynamics of such pathways are poorly understood. Moreover, whether these pathways are general features of crystallizing systems or a consequence of system-specific structural details that select for direct versus two-step processes is unknown. Using atomic force microscopy to directly observe crystallization of sequence-defined polymers, we show that crystallization pathways are indeed sequence dependent. When a short hydrophobic region is added to a sequence that directly forms crystalline particles, crystallization instead follows a two-step pathway that begins with the creation of disordered clusters of 10-20 molecules and is characterized by highly non-linear crystallization kinetics in which clusters transform into ordered structures that then enter the growth phase. The results shed new light on non-classical crystallization mechanisms and have implications for the design of self-assembling polymer systems.
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Affiliation(s)
- Xiang Ma
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Shuai Zhang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Fang Jiao
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Christina J Newcomb
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Yuliang Zhang
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Arushi Prakash
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, USA
| | - Zhihao Liao
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Marcel D Baer
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Christopher J Mundy
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, USA
| | - James Pfaendtner
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, USA
| | - Aleksandr Noy
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
- School of Natural Sciences University of California Merced, Merced, California 95343, USA
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, USA
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Yao S, Jin B, Liu Z, Shao C, Zhao R, Wang X, Tang R. Biomineralization: From Material Tactics to Biological Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605903. [PMID: 28229486 DOI: 10.1002/adma.201605903] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/31/2017] [Indexed: 05/23/2023]
Abstract
Biomineralization is an important tactic by which biological organisms produce hierarchically structured minerals with marvellous functions. Biomineralization studies typically focus on the mediation function of organic matrices on inorganic minerals, which helps scientists to design and synthesize bioinspired functional materials. However, the presence of inorganic minerals may also alter the native behaviours of organic matrices and even biological organisms. This progress report discusses the latest achievements relating to biomineralization mechanisms, the manufacturing of biomimetic materials and relevant applications in biological and biomedical fields. In particular, biomineralized vaccines and algae with improved thermostability and photosynthesis, respectively, demonstrate that biomineralization is a strategy for organism evolution via the rational design of organism-material complexes. The successful modification of biological systems using materials is based on the regulatory effect of inorganic materials on organic organisms, which is another aspect of biomineralization control. Unlike previous studies, this study integrates materials and biological science to achieve a more comprehensive view of the mechanisms and applications of biomineralization.
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Affiliation(s)
- Shasha Yao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Biao Jin
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zhaoming Liu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Changyu Shao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Ruibo Zhao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Xiaoyu Wang
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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35
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Haqshenas SR, Ford IJ, Saffari N. Modelling the effect of acoustic waves on nucleation. J Chem Phys 2016; 145:024315. [DOI: 10.1063/1.4955202] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. R. Haqshenas
- Department of Mechanical Engineering, University College London, Gower Street, London WC1E 7JE, United Kingdom
| | - I. J. Ford
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - N. Saffari
- Department of Mechanical Engineering, University College London, Gower Street, London WC1E 7JE, United Kingdom
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36
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Velegol D, Garg A, Guha R, Kar A, Kumar M. Origins of concentration gradients for diffusiophoresis. SOFT MATTER 2016; 12:4686-4703. [PMID: 27174044 DOI: 10.1039/c6sm00052e] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fluid transport that is driven by gradients of pressure, gravity, or electro-magnetic potential is well-known and studied in many fields. A subtler type of transport, called diffusiophoresis, occurs in a gradient of chemical concentration, either electrolyte or non-electrolyte. Diffusiophoresis works by driving a slip velocity at the fluid-solid interface. Although the mechanism is well-known, the diffusiophoresis mechanism is often considered to be an esoteric laboratory phenomenon. However, in this article we show that concentration gradients can develop in a surprisingly wide variety of physical phenomena - imposed gradients, asymmetric reactions, dissolution, crystallization, evaporation, mixing, sedimentation, and others - so that diffusiophoresis is in fact a very common transport mechanism, in both natural and artificial systems. We anticipate that in georeservoir extractions, physiological systems, drying operations, laboratory and industrial separations, crystallization operations, membrane processes, and many other situations, diffusiophoresis is already occurring - often without being recognized - and that opportunities exist for designing this transport to great advantage.
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Affiliation(s)
- Darrell Velegol
- Department of Chemical Engineering, Penn State University, University Park, PA 16802, USA.
| | - Astha Garg
- Department of Chemical Engineering, Penn State University, University Park, PA 16802, USA.
| | - Rajarshi Guha
- Department of Chemical Engineering, Penn State University, University Park, PA 16802, USA.
| | - Abhishek Kar
- Department of Chemical Engineering, Penn State University, University Park, PA 16802, USA.
| | - Manish Kumar
- Department of Chemical Engineering, Penn State University, University Park, PA 16802, USA.
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37
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Umantsev A. Lifetime of metastable states in a Ginzburg-Landau system: Numerical simulations at large driving forces. Phys Rev E 2016; 93:042806. [PMID: 27176373 DOI: 10.1103/physreve.93.042806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Indexed: 11/07/2022]
Abstract
We developed a "brute-force" simulation method and conducted numerical "experiments" on homogeneous nucleation in an isotropic system at large driving forces (not small supersaturations) using the stochastic Ginzburg-Landau approach. Interactions in the system are described by the asymmetric (no external field), athermal (temperature-independent driving force), tangential (simple phase diagram) Hamiltonian, which has two independent "drivers" of the phase transition: supersaturation and thermal noise. We obtained the probability distribution function of the lifetime of the metastable state and analyzed its mean value as a function of the supersaturation, noise strength, and volume. We also proved the nucleation theorem in the mean-field approximation. The results allowed us to find the thermodynamic properties of the barrier state and conclude that at large driving forces the fluctuating volumes are not independent.
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Affiliation(s)
- A Umantsev
- Department of Physical Chemistry, National University of Science and Technology MISiS, 4 Leninsky Ave, 119049 Moscow, Russia and Department of Chemistry and Physics, Fayetteville State University, Fayetteville, North Carolina 28301, USA
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38
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Bruot N, Caupin F. Curvature Dependence of the Liquid-Vapor Surface Tension beyond the Tolman Approximation. PHYSICAL REVIEW LETTERS 2016; 116:056102. [PMID: 26894721 DOI: 10.1103/physrevlett.116.056102] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Indexed: 06/05/2023]
Abstract
Surface tension is a macroscopic manifestation of the cohesion of matter, and its value σ_{∞} is readily measured for a flat liquid-vapor interface. For interfaces with a small radius of curvature R, the surface tension might differ from σ_{∞}. The Tolman equation, σ(R)=σ_{∞}/(1+2δ/R), with δ a constant length, is commonly used to describe nanoscale phenomena such as nucleation. Here we report experiments on nucleation of bubbles in ethanol and n-heptane, and their analysis in combination with their counterparts for the nucleation of droplets in supersaturated vapors, and with water data. We show that neither a constant surface tension nor the Tolman equation can consistently describe the data. We also investigate a model including 1/R and 1/R^{2} terms in σ(R). We describe a general procedure to obtain the coefficients of these terms from detailed nucleation experiments. This work explains the conflicting values obtained for the Tolman length in previous analyses, and suggests directions for future work.
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Affiliation(s)
- Nicolas Bruot
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, Institut Universitaire de France, 69622 Villeurbanne cedex, France
| | - Frédéric Caupin
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, Institut Universitaire de France, 69622 Villeurbanne cedex, France
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39
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Keasler SJ, Siepmann JI. Understanding the sensitivity of nucleation free energies: The role of supersaturation and temperature. J Chem Phys 2015; 143:164516. [PMID: 26520536 DOI: 10.1063/1.4934220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Simulations are used to investigate the vapor-to-liquid nucleation of water for several different force fields at various sets of physical conditions. The nucleation free energy barrier is found to be extremely sensitive to the force field at the same absolute conditions. However, when the results are compared at the same supersaturation and reduced temperature or the same metastability parameter and reduced temperature, then the differences in the nucleation free energies of the different models are dramatically reduced. This finding suggests that comparisons of experimental data and computational predictions are most meaningful at the same relative conditions and emphasizes the importance of knowing the phase diagram of a given computational model, but such information is usually not available for models where the interaction energy is determined directly from electronic structure calculations.
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Affiliation(s)
- Samuel J Keasler
- Department of Chemistry and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA
| | - J Ilja Siepmann
- Department of Chemistry and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA
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40
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Mazzi A, Gorrini F, Miotello A. Liquid nanodroplet formation through phase explosion mechanism in laser-irradiated metal targets. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 92:031301. [PMID: 26465419 DOI: 10.1103/physreve.92.031301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Indexed: 06/05/2023]
Abstract
Some quantitative aspects of laser-irradiated pure metals, while approaching phase explosion, are still not completely understood. Here, we develop a model that describes the main quantities regulating the liquid-vapor explosive phase transition and the expulsion of liquid nanodroplets that, by solidifying, give rise to nanoparticle formation. The model combines both a thermodynamics description of the explosive phase change and a Monte Carlo simulation of the randomly generated critical vapor bubbles. The calculation is performed on a set of seven metals (Al, Fe, Co, Ni, Cu, Ag, and Au) which are frequently used in pulsed laser ablation experiments. Our final predictions about the size distribution of the liquid nanodroplets and the number ratio of liquid/vapor ejected atoms are compared, whenever possible, with available molecular dynamics simulations and experimental data.
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Affiliation(s)
- Alberto Mazzi
- Dipartimento di Fisica, Università degli Studi di Trento, 38123 Povo (Trento), Italy
| | - Federico Gorrini
- Dipartimento di Fisica, Università degli Studi di Trento, 38123 Povo (Trento), Italy
- Center for Neuroscience and Cognitive Systems @UniTn, Istituto Italiano di Tecnologia, Corso Bettini 31, 38068 Rovereto, Italy
| | - Antonio Miotello
- Dipartimento di Fisica, Università degli Studi di Trento, 38123 Povo (Trento), Italy
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41
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Qin D, Feng Y, Wan M. Modeling photoacoustic cavitation nucleation and bubble dynamics with modified classical nucleation theory. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2015; 138:1282-1289. [PMID: 26428766 DOI: 10.1121/1.4928302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Photoacoustic cavitation (PAC) is the formation of bubbles in liquids using a focused laser and a pre-established ultrasound synchronously. The decreased threshold of each modality and the precise location of cavitation determined by the focused laser are both significant in the targeted theranostics. In this study, PAC nucleation was described using the modified classical nucleation theory by Kashchiev's scaling function. A two-stage model of the PAC bubble dynamics was presented based on the two different bubble behaviors. It was clarified that both negative acoustic pressure and laser-induced temperature rise, resulting in the decrease in critical radius and the increase in nucleation rate, and thereby contribute to the increase in nucleation probability in the confocal region. Ultrasound determined the whole PAC bubble dynamics with temperature-dependent parameters, while the laser mainly contributed to its initial conditions. Moreover, the effects of certain parameters on PAC were further discussed, including the relative acoustic phase when a laser is introduced (φ), laser pulse duration (τ(L)), laser focus radius (R(f)), and ultrasound amplitude (P(A)). The model would be helpful in understanding the PAC process and further in introducing PAC to potential targeted theranostics.
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Affiliation(s)
- Dui Qin
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Yi Feng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Mingxi Wan
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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42
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De Yoreo JJ, Gilbert PUPA, Sommerdijk NAJM, Penn RL, Whitelam S, Joester D, Zhang H, Rimer JD, Navrotsky A, Banfield JF, Wallace AF, Michel FM, Meldrum FC, Cölfen H, Dove PM. CRYSTAL GROWTH. Crystallization by particle attachment in synthetic, biogenic, and geologic environments. Science 2015; 349:aaa6760. [PMID: 26228157 DOI: 10.1126/science.aaa6760] [Citation(s) in RCA: 866] [Impact Index Per Article: 96.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Field and laboratory observations show that crystals commonly form by the addition and attachment of particles that range from multi-ion complexes to fully formed nanoparticles. The particles involved in these nonclassical pathways to crystallization are diverse, in contrast to classical models that consider only the addition of monomeric chemical species. We review progress toward understanding crystal growth by particle-attachment processes and show that multiple pathways result from the interplay of free-energy landscapes and reaction dynamics. Much remains unknown about the fundamental aspects, particularly the relationships between solution structure, interfacial forces, and particle motion. Developing a predictive description that connects molecular details to ensemble behavior will require revisiting long-standing interpretations of crystal formation in synthetic systems, biominerals, and patterns of mineralization in natural environments.
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Affiliation(s)
- James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA. Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Pupa U P A Gilbert
- Departments of Physics and Chemistry, University of Wisconsin, Madison, WI 53706, USA. Radcliffe Institute for Advanced Study, Harvard University, Cambridge, MA 02138, USA
| | - Nico A J M Sommerdijk
- Laboratory of Materials and Interface Chemistry and Soft Matter CryoTEM Unit, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands. Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands
| | - R Lee Penn
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, MN 55455, USA
| | - Stephen Whitelam
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Derk Joester
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Hengzhong Zhang
- Department of Earth and Planetary Science, University of California Berkeley, Berkeley, CA 94720, USA
| | - Jeffrey D Rimer
- Department of Chemical and Biomolecular Engineering, University of Houston, 4800 Calhoun Road, Houston, TX 77204, USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory, Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - Jillian F Banfield
- Department of Earth and Planetary Science, University of California Berkeley, Berkeley, CA 94720, USA
| | - Adam F Wallace
- Department of Geological Sciences, University of Delaware, Newark, DE 19716, USA
| | - F Marc Michel
- Department of Geosciences, Virginia Polytechnic Institute, Blacksburg, VA 24061, USA
| | - Fiona C Meldrum
- School of Chemistry, University of Leeds, Leeds LS2 9JT, West Yorkshire, England
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, D-78457 Constance, Germany
| | - Patricia M Dove
- Department of Geosciences, Virginia Polytechnic Institute, Blacksburg, VA 24061, USA.
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43
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Zhu Z, Park CB, Zong JH. Challenges to the Formation of Nano-cells in Foaming Processes. INT POLYM PROC 2013. [DOI: 10.3139/217.2050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
This paper uses a finite element analysis to investigate the morphological changes of nano-cells in a polystyrene (PS) – CO2 foaming system. The system was composed of a finite polymer melt with a central cell and eight surrounding cells. The computational domain was discretized using linear triangular elements. The growth and shrinkage of nano-sized cells were tracked using the moving mesh method. The effects of the initial bulk gas concentration, cell size, intercellular distance, and system temperature on cell ripening were examined. The results show that smaller nano-sized cell(s) are doomed to collapse very quickly once they have interacted with larger cell(s), making it difficult to survive. Efforts were made to improve the general understanding of the challenges posed to the formation of nano-cells in foaming processes.
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Affiliation(s)
- Z. Zhu
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
| | - C. B. Park
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
| | - J. H. Zong
- Department of Materials, Mechanical & Automation Engineering, Yanbian University of Science and Technology, Yanji, Jilin, PRC
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44
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Kusaka I, Talreja M, Tomasko DL. Beyond classical theory: Predicting the free energy barrier of bubble nucleation in polymer foaming. AIChE J 2013. [DOI: 10.1002/aic.14062] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Isamu Kusaka
- William G. Lowrie Dept. of Chemical and Biomolecular Engineering; The Koffolt Laboratories, The Ohio State University; Columbus OH 43210
| | - Manish Talreja
- School of Chemical and Biomolecular Engineering; Georgia Institute of Technology; NW, Atlanta GA 30332
| | - David L. Tomasko
- William G. Lowrie Dept. of Chemical and Biomolecular Engineering; The Koffolt Laboratories, The Ohio State University; Columbus OH 43210
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45
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46
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Manka AA, Wedekind J, Ghosh D, Höhler K, Wölk J, Strey R. Nucleation of ethanol, propanol, butanol, and pentanol: A systematic experimental study along the homologous series. J Chem Phys 2012; 137:054316. [DOI: 10.1063/1.4739096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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The Two-Step Mechanism and The Solution-Crystal Spinodal for Nucleation of Crystals in Solution. ADVANCES IN CHEMICAL PHYSICS 2012. [DOI: 10.1002/9781118309513.ch4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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48
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Guo Z, Burley AC, Koelling KW, Kusaka I, Lee LJ, Tomasko DL. CO2bubble nucleation in polystyrene: Experimental and modeling studies. J Appl Polym Sci 2012. [DOI: 10.1002/app.36422] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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49
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Zhou D, Zeng M, Mi J, Zhong C. Theoretical Study of Phase Transition, Surface Tension, and Nucleation Rate Predictions for Argon. J Phys Chem B 2010; 115:57-63. [PMID: 21162588 DOI: 10.1021/jp104969c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Di Zhou
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ming Zeng
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianguo Mi
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chongli Zhong
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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50
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Abstract
Crystallization starts with nucleation and control of nucleation is crucial for the control of the number, size, perfection, polymorphism and other characteristics of crystalline materials. This is particularly true for crystallization in solution, which is an essential part of processes in the chemical and pharmaceutical industries and a major step in physiological and pathological phenomena. There have been significant recent advances in the understanding of the mechanism of nucleation of crystals in solution. The foremost of these are the two-step mechanism of nucleation and the notion of the solution-crystal spinodal. According to the two-step mechanism, the crystalline nucleus appears inside pre-existing metastable clusters of size several hundred nanometers, which consist of dense liquid and are suspended in the solution. While initially proposed for protein crystals, the applicability of this mechanism has been demonstrated for small molecule organic materials, colloids, polymers, and biominerals. This mechanism helps to explain several long-standing puzzles of crystal nucleation in solution: nucleation rates which are many orders of magnitude lower than theoretical predictions, the significance of the dense protein liquid, and others. At high supersaturations typical of most crystallizing systems, the generation of crystal embryos occurs in the spinodal regime, where the nucleation barrier is negligible. The solution-crystal spinodal helps to understand the role of heterogeneous substrates in nucleation and the selection of crystalline polymorphs. Importantly, these ideas provide powerful tools for control of the nucleation process by varying the solution thermodynamic parameters.
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Affiliation(s)
- Peter G Vekilov
- Department of Chemical and Biomolecular Engineering and Department of Chemistry, University of Houston, Houston Texas, 77204-4004, USA
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