1
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Melendez LV, Nguyen CK, Wilms M, Syed N, Daeneke T, Duffy NW, Fery A, Della Gaspera E, Gómez DE. Probing the Interaction between Individual Metal Nanocrystals and Two-Dimensional Metal Oxides via Electron Energy Loss Spectroscopy. NANO LETTERS 2024; 24:1944-1950. [PMID: 38305174 DOI: 10.1021/acs.nanolett.3c04225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Metal nanoparticles can photosensitize two-dimensional metal oxides, facilitating their electrical connection to devices and enhancing their abilities in catalysis and sensing. In this study, we investigated how individual silver nanoparticles interact with two-dimensional tin oxide and antimony-doped indium oxide using electron energy loss spectroscopy (EELS). The measurement of the spectral line width of the longitudinal plasmon resonance of the nanoparticles in absence and presence of 2D materials allowed us to quantify the contribution of chemical interface damping to the line width. Our analysis reveals that a stronger interaction (damping) occurs with 2D antimony-doped indium oxide due to its highly homogeneous surface. The results of this study offer new insight into the interaction between metal nanoparticles and 2D materials.
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Affiliation(s)
- Lesly V Melendez
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Chung Kim Nguyen
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Michael Wilms
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Nitu Syed
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
- School of Physics, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Torben Daeneke
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Noel W Duffy
- CSIRO Energy, Clayton South, Victoria 3169, Australia
| | - Andreas Fery
- Physical Chemistry of Polymeric Materials, Technische Universität Dresden, Bergstr. 66, 01069 Dresden, Germany
- Institute for Physical Chemistry and Polymer Physics, Leibniz Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
| | | | - Daniel E Gómez
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
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2
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Googasian JS, Skrabalak SE. Practical Considerations for Simulating the Plasmonic Properties of Metal Nanoparticles. ACS PHYSICAL CHEMISTRY AU 2023; 3:252-262. [PMID: 37249938 PMCID: PMC10214510 DOI: 10.1021/acsphyschemau.2c00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 05/31/2023]
Abstract
Simulating the plasmonic properties of colloidally derived metal nanoparticles with accuracy to their experimentally observed measurements is challenging due to the many structural and compositional parameters that influence their scattering and absorption properties. Correlation between single nanoparticle scattering measurements and simulated spectra emphasize these strong structural and compositional relationships, providing insight into the design of plasmonic nanoparticles. This Perspective builds from this history to highlight how the structural features of models used in simulation methods such as those based on the Finite-Difference Time-Domain (FDTD) method and Discrete Dipole Approximation (DDA) are of critical consideration for correlation with experiment and ultimately prediction of new nanoparticle properties. High-level characterizations such as electron tomography are discussed as ways to advance the accuracy of models used in such simulations, allowing the plasmonic properties of structurally complex nanoparticles to be better understood. However, we also note that the field is far from bringing experiment and simulation into agreement for plasmonic nanoparticles with complex compositions, reflecting analytical challenges that inhibit accurate model generation. Potential directions for addressing these challenges are also presented.
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3
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He W, Chen C, Liu Y, Tomasino A, Mousavi Masouleh SS, Valdez J, Guner T, Morandotti R, Moores A, Botton GA, Zhou Y, Yurtsever A, Ma D. Imaging Photon-Induced Near-Field Distributions of a Plasmonic, Self-Assembled Vesicle by a Laser-Integrated Electron Microscope. NANO LETTERS 2023. [PMID: 36995289 DOI: 10.1021/acs.nanolett.2c05096] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Plasmonic polymeric nanoassemblies offer valuable opportunities in photoconversion applications. Localized surface plasmon mechanisms behind such nanoassemblies govern their functionalities under light illumination. However, an in-depth investigation at the single nanoparticle (NP) level is still challenging, especially when the buried interface is involved, due to the availability of suitable techniques. Here, we synthesized an anisotropic heterodimer composed of a self-assembled polymer vesicle (THPG) capped with a single gold NP, enabling an 8-fold enhancement in hydrogen generation compared to the nonplasmonic THPG vesicle. We explored the anisotropic heterodimer at the single particle level by employing advanced transmission electron microscopes, including one equipped with a femtosecond pulsed laser, which allows us to visualize the polarization- and frequency-dependent distribution of the enhanced electric near fields at the vicinity of Au cap and Au-polymer interface. These elaborated fundamental findings may guide designing new hybrid nanostructures tailored for plasmon-related applications.
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Affiliation(s)
- Wanting He
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
| | - Chuanshuang Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yannan Liu
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Department of Synthetic Materials and Functional Devices, Max-Planck Institute of Microstructure Physics, Halle 06120, Germany
| | - Alessandro Tomasino
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
| | | | - Jesus Valdez
- Facility for Electron Microscopy Research (FEMR), McGill University, Montréal, QC H3A 037, Canada
| | - Tugrul Guner
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
| | - Roberto Morandotti
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
| | - Audrey Moores
- Facility for Electron Microscopy Research (FEMR), McGill University, Montréal, QC H3A 037, Canada
| | - Gianluigi A Botton
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S 4L7, Canada
- Canadian Light Source, Saskatoon, SK S7N 2V3, Canada
| | - Yongfeng Zhou
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Aycan Yurtsever
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
| | - Dongling Ma
- Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, QC J3X 1P7, Canada
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4
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Melendez LV, Van Embden J, Connell TU, Duffy NW, Gómez DE. Optimal Geometry for Plasmonic Hot-Carrier Extraction in Metal-Semiconductor Nanocrystals. ACS NANO 2023; 17:4659-4666. [PMID: 36801851 DOI: 10.1021/acsnano.2c10892] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Plasmon-induced energy and charge transfer from metal nanostructures hold great potential for harvesting solar energy. Presently, the efficiencies of charge-carrier extraction are still low due to the competitive ultrafast mechanisms of plasmon relaxation. Using single-particle electron energy loss spectroscopy, we correlate the geometrical and compositional details of individual nanostructures to their carrier extraction efficiencies. By removing ensemble effects, we are able to show a direct structure-function relationship that permits the rational design of the most efficient metal-semiconductor nanostructures for energy harvesting applications. In particular, by developing a hybrid system comprising Au nanorods with epitaxially grown CdSe tips, we are able to control and enhance charge extraction. We show that optimal structures can have efficiencies as high as 45%. The quality of the Au-CdSe interface and the dimensions of the Au rod and CdSe tip are shown to be critical for achieving these high efficiencies of chemical interface damping.
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Affiliation(s)
- Lesly V Melendez
- School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Joel Van Embden
- School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Timothy U Connell
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3220, Australia
| | - Noel W Duffy
- CSIRO Energy, Clayton South, VIC 3169, Australia
| | - Daniel E Gómez
- School of Science, RMIT University, Melbourne, VIC 3000, Australia
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5
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Thøgersen A, Jensen IJT, Belle BD, Stange M, Reinertsen VM, Kjeldstad T, Prytz Ø, Monakhov E, Kepaptsoglou D. Plasmonic properties of aluminium nanowires in amorphous silicon. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 35:065301. [PMID: 36379064 DOI: 10.1088/1361-648x/aca30e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Plasmonic structures can help enhance optical activity in the ultraviolet (UV) region and therefore enhancing photocatalytic reactions and the detection of organic and biological species. Most plasmonic structures are composed of Ag or Au. However, producing structures small enough for optical activity in the UV region has proved difficult. In this study, we demonstrate that aluminium nanowires are an excellent alternative. We investigated the plasmonic properties of the Al nanowires as well as the optoelectronic properties of the surroundinga - Simatrix by combining scanning transmission electron microscopy imaging, electron energy loss spectroscopy and electrodynamic modelling. We have found that the Al nanowires have distinct plasmonic modes in the UV and far UV region, from 0.75 eV to 13 eV. In addition, simulated results found that the size and spacing of the Al nanowires, as well as the embedding material were shown to have a large impact on the type of surface plasmon energies that can be generated in the material. Using electromagnetic modelling, we have identified the modes and illustrated how they could be tuned further.
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Affiliation(s)
| | | | | | - Marit Stange
- SINTEF Industry, PO Box 124 Blindern, 0314 Oslo, Norway
| | - Vilde Mari Reinertsen
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway
| | - Torunn Kjeldstad
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway
| | - Øystein Prytz
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway
| | - Edouard Monakhov
- Department of Physics, Centre for Materials Science and Nanotechnology, University of Oslo, PO Box 1048 Blindern, N-0316 Oslo, Norway
| | - Demie Kepaptsoglou
- SuperSTEM, SciTech Daresbury Science and Innovation Campus, Keckwick Lane, Daresbury WA4 4AD, United Kingdom
- Department of Physics, University of York, Heslington YO10 5DD, United Kingdom
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6
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Elibol K, Downing C, Hobbs RG. Nanoscale mapping of shifts in dark plasmon modes in sub 10 nm aluminum nanoantennas. NANOTECHNOLOGY 2022; 33:475203. [PMID: 35944508 DOI: 10.1088/1361-6528/ac8812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
In this work, we report the fabrication and spectroscopic characterization of subwavelength aluminum nanocavities-consisting of hexamer or tetramer clusters of sub 10 nm width Al nanorods-with tunable localized surface plasmon resonance (LSPR) energies on suspended SiNxmembranes. Here the volume plasmon (VP) and LSPR modes of lithographically-fabricated Al nanocavities are revealed by low-loss electron energy-loss spectroscopy (EELS) in an aberration corrected scanning transmission electron microscope (STEM). We show that the existence of grain boundaries (GBs) in these nanocavities results in shifts in the VP energy and a reduction in the VP lifetime. We map the VP energy and lifetime across GBs and we observe a decrease in VP energy and lifetime at GBs that is consistent with a reduction in free carrier density and increased plasmon scattering at these locations. Dipolar LSPR modes resonant in the UV and blue regions of the electromagnetic spectrum as well as higher-energy optically dark quadrupolar and hexapolar LSPR modes are also observed and mapped by STEM and EELS. All LSPR modes are confirmed via electromagnetic simulations based on the boundary element method. Both tetramer and hexamer structures support the excitation of dipolar bright and dipolar dark modes. Finally, we find that asymmetries in fabricated nanorod hexamer and tetramer nanocavities result in a mode mixing leading to a shift in dipolar dark LSPR modes.
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Affiliation(s)
- Kenan Elibol
- School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland
| | - Clive Downing
- School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland
| | - Richard G Hobbs
- School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland
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7
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Dieperink M, Scalerandi F, Albrecht W. Correlating structure, morphology and properties of metal nanostructures by combining single-particle optical spectroscopy and electron microscopy. NANOSCALE 2022; 14:7460-7472. [PMID: 35481561 DOI: 10.1039/d1nr08130f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The nanoscale morphology of metal nanostructures directly defines their optical, catalytic and electronic properties and even small morphological changes can cause significant property variations. On the one hand, this dependence allows for precisely tuning and exploring properties by shape engineering; next to advanced synthesis protocols, post-synthesis modification through tailored laser modification has become an emerging tool to do so. On the other hand, with this interconnection also comes the quest for detailed structure-property correlation and understanding of laser-induced reshaping processes on the individual nanostructure level beyond ensemble averages. With the development of single-particle (ultrafast) optical spectroscopy techniques and advanced electron microscopy such understanding can in principle be gained at the femtosecond temporal and atomic spatial scale, respectively. However, accessing both on the same individual nanostructure is far from straightforward as it requires the combination of optical spectroscopy and electron microscopy. In this Minireview, we highlight key studies from recent years that performed such correlative measurements on the same individual metal nanostructure either in a consecutive ex situ manner or in situ inside the electron microscope. We demonstrate that such a detailed correlation is critical for revealing the full picture of the structure-property relationship and the physics behind light-induced nanostructure modifications. We put emphasis on the advantages and disadvantages of each methodology as well as on the unique information that one can gain only by correlative studies performed on the same individual nanostructure and end with an outlook on possible further development of this field in the near future.
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Affiliation(s)
- Mees Dieperink
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
| | - Francesca Scalerandi
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
| | - Wiebke Albrecht
- Department of Sustainable Energy Materials, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
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8
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Collins SSE, Searles EK, Tauzin LJ, Lou M, Bursi L, Liu Y, Song J, Flatebo C, Baiyasi R, Cai YY, Foerster B, Lian T, Nordlander P, Link S, Landes CF. Plasmon Energy Transfer in Hybrid Nanoantennas. ACS NANO 2021; 15:9522-9530. [PMID: 33350807 DOI: 10.1021/acsnano.0c08982] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic metal nanoparticles exhibit large dipole moments upon photoexcitation and have the potential to induce electronic transitions in nearby materials, but fast internal relaxation has to date limited the spatial range and efficiency of plasmonic mediated processes. In this work, we use photo-electrochemistry to synthesize hybrid nanoantennas comprised of plasmonic nanoparticles with photoconductive polymer coatings. We demonstrate that the formation of the conductive polymer is selective to the nanoparticles and that polymerization is enhanced by photoexcitation. In situ spectroscopy and simulations support a mechanism in which up to 50% efficiency of nonradiative energy transfer is achieved. These hybrid nanoantennas combine the unmatched light-harvesting properties of a plasmonic antenna with the similarly unmatched device processability of a polymer shell.
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Affiliation(s)
- Sean S E Collins
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Emily K Searles
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Lawrence J Tauzin
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Minhan Lou
- Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Luca Bursi
- Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Physics & Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yawei Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive, NE, Atlanta, Georgia 30322, United States
| | - Jia Song
- Department of Chemistry, Emory University, 1515 Dickey Drive, NE, Atlanta, Georgia 30322, United States
| | - Charlotte Flatebo
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Applied Physics Program, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Rashad Baiyasi
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yi-Yu Cai
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Benjamin Foerster
- Advanced Materials & Systems Research, Polymer Colloid Technology, BASF SE, 67056 Ludwigshafen am Rhein, Germany
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, NE, Atlanta, Georgia 30322, United States
| | - Peter Nordlander
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Physics & Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Stephan Link
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Christy F Landes
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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9
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Zhang F, Plain J, Gérard D, Martin J. Surface roughness and substrate induced symmetry-breaking: influence on the plasmonic properties of aluminum nanostructure arrays. NANOSCALE 2021; 13:1915-1926. [PMID: 33439182 DOI: 10.1039/d0nr06305c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The surface topography is known to play an important role on the near- and far-field optical properties of metallic nanoparticles. In particular, aluminum (Al) nanoparticles are commonly fabricated through evaporation techniques, therefore exhibiting elevated surface roughness additionally to their native oxide layer. In this study, the mode-dependent influence of surface roughness on the plasmonic properties sustained by Al nanodisks (NDs) is first numerically investigated using a realistic model taking into account the thin native oxide layer. Due to the symmetry-breaking induced by the supporting dielectric substrate to Al ND, it appears that the roughness affects differently the substrate-induced out-of-plane quadrupolar mode (below 300 nm) and the in-plane dipolar mode sustained by the Al ND. By increasing the top surface roughness of the Al ND, the substrate-induced quadrupolar mode is significantly damped especially in the ultraviolet regime, while the dipolar resonance is broadened and redshifted. The explanation of these effects relies in the decoherence and dissipation of the collective electronic oscillations as a result of the top surface roughness to the different near-field distribution of the out-of-plane quadrupolar mode and in-plane dipolar mode. Moreover, the influences of the diameter of Al ND, dielectric substrate with different refractive index, and the oxidation of Al ND on these two modes are also investigated. Particularly, the quadrupolar mode disappears with surface roughness and oxidation, explaining why this mode is very weak and sometimes barely visible on evaporated Al nanostructures reported in the literature. Finally, these results are experimentally confirmed by characterizing the optical properties of periodic Al ND arrays.
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Affiliation(s)
- Feifei Zhang
- Light, Nanomaterials & Nanotechnologies (L2n), CNRS ERL 7004, Université de Technologie de Troyes, 12 rue Marie Curie, 10004 Troyes Cedex, France.
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10
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Da Browski M, Dai Y, Petek H. Ultrafast Photoemission Electron Microscopy: Imaging Plasmons in Space and Time. Chem Rev 2020; 120:6247-6287. [PMID: 32530607 DOI: 10.1021/acs.chemrev.0c00146] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Plasmonics is a rapidly growing field spanning research and applications across chemistry, physics, optics, energy harvesting, and medicine. Ultrafast photoemission electron microscopy (PEEM) has demonstrated unprecedented power in the characterization of surface plasmons and other electronic excitations, as it uniquely combines the requisite spatial and temporal resolution, making it ideally suited for 3D space and time coherent imaging of the dynamical plasmonic phenomena on the nanofemto scale. The ability to visualize plasmonic fields evolving at the local speed of light on subwavelength scale with optical phase resolution illuminates old phenomena and opens new directions for growth of plasmonics research. In this review, we guide the reader thorough experimental description of PEEM as a characterization tool for both surface plasmon polaritons and localized plasmons and summarize the exciting progress it has opened by the ultrafast imaging of plasmonic phenomena on the nanofemto scale.
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Affiliation(s)
- Maciej Da Browski
- Department of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter, Devon EX4 4QL, U.K
| | - Yanan Dai
- Department of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Hrvoje Petek
- Department of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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11
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Miao C, Xu H, Jiang M, Liu Y, Wan P, Kan C. High performance lasing in a single ZnO microwire using Rh nanocubes. OPTICS EXPRESS 2020; 28:20920-20929. [PMID: 32680142 DOI: 10.1364/oe.395746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
High-purity and size-controlled Rh nanocubes (RhNCs) with plasmonic responses in the ultraviolet spectrum range were synthesized; the ultraviolet plasmonic features of RhNCs have potential applications in wide bandgap semiconductors and optoelectronic devices because of their optical tunability and stability, as well as the compatibility with neighboring semiconductor micro/nanostructures. In this work, by incorporating RhNCs, the near-band-edge emission of a single ZnO microwire is considerably enhanced. When optically pumped by a fs pulsed laser at room temperature, RhNCs-plasmon enhanced high-performance whispering gallery mode (WGM) lasing characteristics, including lower lasing threshold, higher Q-factor, and lasing output enhancement, can be achieved from a single ZnO microwire covered by RhNCs. To further probe the modulation effect of RhNCs plasmons on the lasing characteristics of the ZnO microwires, time-resolved photoluminescence (TRPL) and electromagnetic simulation analyses were also performed. Based on our results, it can be concluded that size-controlled RhNCs with ultraviolet energy-tunable plasmons have the potential for use in optoelectronic devices requiring stable and high-performance in the short wavelength spectrum band owing to their unique ultraviolet plasmonic features.
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12
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Volokh M, Mokari T. Metal/semiconductor interfaces in nanoscale objects: synthesis, emerging properties and applications of hybrid nanostructures. NANOSCALE ADVANCES 2020; 2:930-961. [PMID: 36133041 PMCID: PMC9418511 DOI: 10.1039/c9na00729f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/04/2020] [Indexed: 05/11/2023]
Abstract
Hybrid nanostructures, composed of multi-component crystals of various shapes, sizes and compositions are much sought-after functional materials. Pairing the ability to tune each material separately and controllably combine two (or more) domains with defined spatial orientation results in new properties. In this review, we discuss the various synthetic mechanisms for the formation of hybrid nanostructures of various complexities containing at least one metal/semiconductor interface, with a focus on colloidal chemistry. Different synthetic approaches, alongside the underlying kinetic and thermodynamic principles are discussed, and future advancement prospects are evaluated. Furthermore, the proved unique properties are reviewed with emphasis on the connection between the synthetic method and the resulting physical, chemical and optical properties with applications in fields such as photocatalysis.
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Affiliation(s)
- Michael Volokh
- Department of Chemistry, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel
| | - Taleb Mokari
- Department of Chemistry, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel
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13
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Pavlovetc IM, Aleshire K, Hartland GV, Kuno M. Approaches to mid-infrared, super-resolution imaging and spectroscopy. Phys Chem Chem Phys 2020; 22:4313-4325. [PMID: 32064480 DOI: 10.1039/c9cp05815j] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This perspective highlights recent advances in super-resolution, mid-infrared imaging and spectroscopy. It provides an overview of the different near field microscopy techniques developed to address the problem of chemically imaging specimens in the mid-infrared "fingerprint" region of the spectrum with high spatial resolution. We focus on a recently developed far-field optical technique, called infrared photothermal heterodyne imaging (IR-PHI), and discusses the technique in detail. Its practical implementation in terms of equipment used, optical geometries employed, and underlying contrast mechanism are described. Milestones where IR-PHI has led to notable advances in bioscience and materials science are summarized. The perspective concludes with a future outlook for robust and readily accessible high spatial resolution, mid-infrared imaging and spectroscopy techniques.
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Affiliation(s)
- Ilia M Pavlovetc
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Kyle Aleshire
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Gregory V Hartland
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Masaru Kuno
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA. and Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA
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14
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Wan P, Jiang M, Tang K, Zhou X, Kan C. Hot electron injection induced electron–hole plasma lasing in a single microwire covered by large size Ag nanoparticles. CrystEngComm 2020. [DOI: 10.1039/d0ce00640h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In addition to the plasmon-mediated resonant coupling mechanism, plasmon-induced hot electron transfer can provide an alternative approach to construct high-performance optoelectronic devices for various applications.
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Affiliation(s)
- Peng Wan
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
| | - Mingming Jiang
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
- Key Laboratory for Intelligent Nano Materials and Devices
| | - Kai Tang
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
| | - Xiangbo Zhou
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
| | - Caixia Kan
- College of Science
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
- Key Laboratory for Intelligent Nano Materials and Devices
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15
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Smith KC, Olafsson A, Hu X, Quillin SC, Idrobo JC, Collette R, Rack PD, Camden JP, Masiello DJ. Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe. PHYSICAL REVIEW LETTERS 2019; 123:177401. [PMID: 31702260 DOI: 10.1103/physrevlett.123.177401] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we exploit recent breakthroughs in monochromated aberration-corrected scanning transmission electron microscopy (STEM) to resolve infrared plasmonic Fano antiresonances in individual nanofabricated disk-rod dimers. Using a combination of electron energy-loss spectroscopy and theoretical modeling, we investigate and characterize a subspace of the weak coupling regime between quasidiscrete and quasicontinuum localized surface plasmon resonances where infrared plasmonic Fano antiresonances appear. This work illustrates the capability of STEM instrumentation to experimentally observe nanoscale plasmonic responses that were previously the domain only of higher-resolution infrared spectroscopies.
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Affiliation(s)
- Kevin C Smith
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Agust Olafsson
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Xuan Hu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Steven C Quillin
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Juan Carlos Idrobo
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Robyn Collette
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Philip D Rack
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - David J Masiello
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
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16
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Qi R, Wang R, Li Y, Sun Y, Chen S, Han B, Li N, Zhang Q, Liu X, Yu D, Gao P. Probing Far-Infrared Surface Phonon Polaritons in Semiconductor Nanostructures at Nanoscale. NANO LETTERS 2019; 19:5070-5076. [PMID: 31322902 DOI: 10.1021/acs.nanolett.9b01350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phonon polaritons hold potential prospects of nanophotonic applications at the mid- and far-infrared wavelengths. However, their experimental investigation in the far-infrared range has long been a technical challenge due to the lack of suitable light sources and detectors. To obviate these difficulties, here we use an electron probe with sub-10 meV energy resolution and subnanometer spatial resolution to study far-infrared surface phonon polaritons (∼50-70 meV) in ZnO nanostructures. We observe ultraslow propagation and interference fringes of propagating surface phonon polaritons and obtain their dispersion relation through measurements in the coordinate space. By mapping localized modes in nanowires and flakes, we reveal their localized nature and investigate geometry and size effects. Associated with simulation, we show that surface phonon polariton behaviors can be well described by the local continuum dielectric model. Our work paves the way for spatial-resolved investigation of surface phonon polaritons by electron probes and forwards polaritonics in the far-infrared range.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Xinfeng Liu
- Division of Nanophotonics, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Dapeng Yu
- Shenzhen Key Laboratory of Quantum Science and Engineering , Shenzhen 518055 , China
| | - Peng Gao
- Collaborative Innovation Center of Quantum Matter, and Beijing Key Laboratory of Quantum Devices , Beijing 100871 , China
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17
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Light-induced ZnO/Ag/rGO bactericidal photocatalyst with synergistic effect of sustained release of silver ions and enhanced reactive oxygen species. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(18)63193-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Rahman MZ, Davey K, Mullins CB. Tuning the Intrinsic Properties of Carbon Nitride for High Quantum Yield Photocatalytic Hydrogen Production. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800820. [PMID: 30356987 PMCID: PMC6193178 DOI: 10.1002/advs.201800820] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/27/2018] [Indexed: 05/14/2023]
Abstract
The low quantum yield of photocatalytic hydrogen production in carbon nitride (CN) has been improved upon via the modulation of both the extrinsic and intrinsic properties of the material. Although the modification of extrinsic properties has been widely investigated in the past, recently there has been growing interest in the alteration of intrinsic properties. Refining the intrinsic properties of CN provides flexibility in controlling the charge transport and selectivity in photoredox reactions, and therefore makes available a pathway toward superior photocatalytic performance. An analysis of recent progress in tuning the intrinsic photophysical properties of CN facilitates an assessment of the goals, achievements, and gaps. This article is intended to serve this purpose. Therefore, selected techniques and mechanisms of the tuning of intrinsic properties of CN are critically discussed here. This article concludes with a recommendation of the issues that need to be considered for the further enhancement in the quantum efficiency of CN photocatalysts.
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Affiliation(s)
- Mohammad Z. Rahman
- John J. Mcketta Department of Chemical Engineering & Department of ChemistryCenter for ElectrochemistryTexas Materials InstituteUniversity of Texas at AustinAustinTX78712‐1589USA
| | - Kenneth Davey
- School of Chemical EngineeringThe University of AdelaideAdelaideSA5005Australia
| | - C. Buddie Mullins
- John J. Mcketta Department of Chemical Engineering & Department of ChemistryCenter for ElectrochemistryTexas Materials InstituteUniversity of Texas at AustinAustinTX78712‐1589USA
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19
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Joplin A, Chang WS, Link S. Imaging and Spectroscopy of Single Metal Nanostructure Absorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3775-3786. [PMID: 29149571 DOI: 10.1021/acs.langmuir.7b03154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The highly tunable optical properties of metal nanoparticles make them an ideal building block in any application that requires control over light, heat, or electrons on the nanoscale. Because of their size, metal nanoparticles both absorb and scatter light efficiently. Consequently, improving their performance often involves shifting the balance between absorption and scattering to promote desirable features of their optical properties. Scattering by single metal nanoparticles is commonly characterized using dark-field scattering spectroscopy, but routine methods to characterize pure absorption over a broad wavelength range are much more complex. This article reviews work from our lab using photothermal imaging in combination with dark-field scattering and electron microscopy to separate radiative and nonradiative properties of single nanoparticles and their assemblies. We present both initial work using different laser wavelengths to explore pure absorption free from scattering contributions based on the heat released into the environment as well as the development of photothermal spectroscopy over a broad wavelength range, making it possible to resolve details that are otherwise hidden in ensemble measurements that most of the time also do not separate radiative and nonradiative properties.
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20
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Cherqui C, Li G, Busche JA, Quillin SC, Camden JP, Masiello DJ. Multipolar Nanocube Plasmon Mode-Mixing in Finite Substrates. J Phys Chem Lett 2018; 9:504-512. [PMID: 29314843 DOI: 10.1021/acs.jpclett.7b03271] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Facile control of the radiative and nonradiative properties of plasmonic nanostructures is of practical importance to a wide range of applications in the biological, chemical, optical, information, and energy sciences. For example, the ability to easily tune not only the plasmon spectrum but also the degree of coupling to light and/or heat, quality factor, and optical mode volume would aid the performance and function of nanophotonic devices and molecular sensors that rely upon plasmonic elements to confine and manipulate light at nanoscopic dimensions. While many routes exist to tune these properties, identifying new approaches-especially when they are simple to apply experimentally-is an important task. Here, we demonstrate the significant and underappreciated effects that substrate thickness and dielectric composition can have upon plasmon hybridization as well as downstream properties that depend upon this hybridization. We find that even substrates as thin as ∼10 nm can nontrivially mix free-space plasmon modes, imparting bright character to those that are dark (and vice versa) and, thereby, modifying the plasmonic density of states as well as the system's near- and far-field optical properties. A combination of electron energy-loss spectroscopy (EELS) experiment, numerical simulation, and analytical modeling is used to elucidate this behavior in the finite substrate-induced mixing of dipole, quadrupole, and octupole corner-localized plasmon resonances of individual silver nanocubes.
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Affiliation(s)
- Charles Cherqui
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
| | - Guoliang Li
- Center for Electron Microscopy, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology , Tianjin 300384, China
| | - Jacob A Busche
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
| | - Steven C Quillin
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
- Department of Materials Science and Engineering, University of Tennessee, Knoxville , Tennessee 37996, United States
| | - David J Masiello
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
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21
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Lee SH, Lee SW, Oh T, Petrosko SH, Mirkin CA, Jang JW. Direct Observation of Plasmon-Induced Interfacial Charge Separation in Metal/Semiconductor Hybrid Nanostructures by Measuring Surface Potentials. NANO LETTERS 2018; 18:109-116. [PMID: 29140713 DOI: 10.1021/acs.nanolett.7b03540] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Plasmon-induced interfacial charge separation (PICS) is one of the key processes responsible for the improved conversion efficiencies of energy-harvesting devices that incorporate metal nanostructures. In this Letter, we reveal a mechanism of PICS by visualizing (with nanometer-scale resolution) and characterizing plasmon-exciton coupling between p-type poly(pyrrole) (PPy) nanowires (NWs) and Ag nanoparticles (NPs) using light-irradiated Kelvin probe force microscopy (KPFM). Under blue-light irradiation, the Ag NPs are expected to donate electrons to the PPy NWs via a hot electron injection process. However, in this Letter, we observe that under blue-light irradiation the plasmonically and excitonically excited electrons in the semiconductor back-transfer to the metal. The PICS in this system can be explained by comparing it with a similar one where Au NPs are attached to n-type ZnO NWs; we observed a net electron transfer from the Au NPs to the ZnO NWs (an upward band bending is formed at the interface of the two materials, presumably obstructing electron back-transfer). Indeed, energy band matching between the metal and the semiconductor components of hybrid nanostructures influences PICS pathways. These experimental findings and our proposed mechanism consistently explain the PICS occurring in the PPy NW-Ag NP system with important implications on explaining their cooperative optoelectronic activities.
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Affiliation(s)
- Seung-Hoon Lee
- Department of Physics, Pukyong National University , Busan 48513, Republic of Korea
| | - Seung Woo Lee
- School of Chemical Engineering, Yeungnam University , Gyeongsan, 38541, Republic of Korea
| | | | | | | | - Jae-Won Jang
- Department of Physics, Pukyong National University , Busan 48513, Republic of Korea
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22
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Liu B, Jiang Y, Wang Y, Shang S, Ni Y, Zhang N, Cao M, Hu C. Influence of dimensionality and crystallization on visible-light hydrogen production of Au@TiO2 core–shell photocatalysts based on localized surface plasmon resonance. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02083j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized four Au@TiO2 nanostructures, which exhibit dimensionality- and crystallinity-dependent photocatalytic activity towards H2 generation.
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Affiliation(s)
- Bing Liu
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Yan Jiang
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Yin Wang
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Shuxia Shang
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Yuanman Ni
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Nan Zhang
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Minhua Cao
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
| | - Changwen Hu
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Department of Chemistry
- Beijing Institute of Technology
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23
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Joplin A, Hosseini Jebeli SA, Sung E, Diemler N, Straney PJ, Yorulmaz M, Chang WS, Millstone JE, Link S. Correlated Absorption and Scattering Spectroscopy of Individual Platinum-Decorated Gold Nanorods Reveals Strong Excitation Enhancement in the Nonplasmonic Metal. ACS NANO 2017; 11:12346-12357. [PMID: 29155558 DOI: 10.1021/acsnano.7b06239] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bimetallic nanocatalysts have the potential to surmount current limitations in industrial catalysis if their electronic and optical properties can be effectively controlled. However, improving the performance of bimetallic photocatalysts requires a functional understanding of how the intricacies of their morphology and composition dictate every element of their optical response. In this work, we examine Au and Pt-decorated Au nanorods on a single-particle level to ascertain how Pt influences the plasmon resonance of the bimetallic nanostructure. We correlated scattering, photoluminescence, and pure absorption of individual nanostructures separately to expose the impact of Pt on each component. We found that the scattering and absorption spectra of uncoated Au nanorods followed expected trends in peak intensity and shape and were accurately reproduced by finite difference time domain simulations. In contrast, the scattering and absorption spectra of single Pt-decorated Au nanorods exhibited red-shifted, broad features and large deviations in line shape from particle to particle. Simulations using an idealized geometry confirmed that Pt damps the plasmon resonance of individual Au nanorods and that spectral changes after Pt deposition were a consequence of coupling between Au and Pt in the hybrid nanostructure. Simulations also revealed that the Au nanorod acts as an antenna and enhances absorption in the Pt islands. Furthermore, comparing photoluminescence spectra from Au and Pt-decorated Au nanorods illustrated that emission was significantly reduced in the presence of Pt. The reduction in photoluminescence intensity indicates that Pt lowers the number of hot carriers in the Au nanorod available for radiative recombination through either direct production of hot carriers in Pt following enhanced absorption or charge transfer from Au to Pt. Overall, these results confirm that the Pt island morphology and distribution on the nanorod surface contribute to the optical response of individual hybrid nanostructures and that the damping observed in ensemble measurements originates not only from structural heterogeneity but also because of significant damping in single nanostructures.
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Affiliation(s)
| | | | | | - Nathan Diemler
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Patrick J Straney
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | | | | | - Jill E Millstone
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
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24
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Wu Y, Li G, Camden JP. Probing Nanoparticle Plasmons with Electron Energy Loss Spectroscopy. Chem Rev 2017; 118:2994-3031. [DOI: 10.1021/acs.chemrev.7b00354] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yueying Wu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Guoliang Li
- Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Jon P. Camden
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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25
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Zhu Y, Nakashima PNH, Funston AM, Bourgeois L, Etheridge J. Topologically Enclosed Aluminum Voids as Plasmonic Nanostructures. ACS NANO 2017; 11:11383-11392. [PMID: 29094925 DOI: 10.1021/acsnano.7b05944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recent advances in the ability to synthesize metallic nanoparticles with tailored geometries have led to a revolution in the field of plasmonics. However, studies of the important complementary system, an inverted nanostructure, have so far been limited to two-dimensional sphere-segment voids or holes. Here we reveal the localized surface plasmon resonances (LSPRs) of nanovoids that are topologically enclosed in three-dimensions: an "anti-nanoparticle". We combine this topology with the favorable plasmonic properties of aluminum to observe strongly localized field enhancements with LSPR energies in the extreme UV range, well beyond those accessible with noble metals or yet achieved with aluminum. We demonstrate the resonance tunability by tailoring the shape and size of the nanovoids, which are truncated octahedra in the 10-20 nm range. This system is pristine: the nanovoid cavity is free from any oxide or supporting substrate that would affect the LSPRs. We exploit this to infer LSPRs of pure, sub-20-nm Al nanoparticles, which have yet to be synthesized. Access to this extreme UV range will allow applications in LSPR-enhanced UV photoemission spectroscopy and photoionization.
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Affiliation(s)
- Ye Zhu
- Department of Materials Science and Engineering, Monash University , Melbourne, VIC 3800, Australia
- Department of Applied Physics, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong, People's Republic of China
| | - Philip N H Nakashima
- Department of Materials Science and Engineering, Monash University , Melbourne, VIC 3800, Australia
| | - Alison M Funston
- ARC Centre of Excellence in Exciton Science, School of Chemistry, Monash University , Melbourne, VIC 3800, Australia
| | - Laure Bourgeois
- Department of Materials Science and Engineering, Monash University , Melbourne, VIC 3800, Australia
- Monash Centre for Electron Microscopy, Monash University , Melbourne, VIC 3800, Australia
| | - Joanne Etheridge
- Department of Materials Science and Engineering, Monash University , Melbourne, VIC 3800, Australia
- Monash Centre for Electron Microscopy, Monash University , Melbourne, VIC 3800, Australia
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26
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Abstract
In this study, we overview resonance energy transfer between molecules in the presence of plasmonic structures and derive an explicit Förster-type expression for the rate of plasmon-coupled resonance energy transfer (PC-RET). The proposed theory is general for energy transfer in the presence of materials with any space-dependent, frequency-dependent, or complex dielectric functions. Furthermore, the theory allows us to develop the concept of a generalized spectral overlap (GSO) J̃ (the integral of the molecular absorption coefficient, normalized emission spectrum, and the plasmon coupling factor) for understanding the wavelength dependence of PC-RET and to estimate the rate of PC-RET WET. Indeed, WET = (8.785 × 10-25 mol) ϕDτD-1J̃, where ϕD is donor fluorescence quantum yield and τD is the emission lifetime. Simulations of the GSO for PC-RET show that the most important spectral region for PC-RET is not necessarily near the maximum overlap of donor emission and acceptor absorption. Instead a significant plasmonic contribution can involve a different spectral region from the extinction maximum of the plasmonic structure. This study opens a promising direction for exploring exciton transport in plasmonic nanostructures, with possible applications in spectroscopy, photonics, biosensing, and energy devices.
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Affiliation(s)
- Liang-Yan Hsu
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Wendu Ding
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - George C Schatz
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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27
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Tan S, Liu L, Dai Y, Ren J, Zhao J, Petek H. Ultrafast Plasmon-Enhanced Hot Electron Generation at Ag Nanocluster/Graphite Heterojunctions. J Am Chem Soc 2017; 139:6160-6168. [DOI: 10.1021/jacs.7b01079] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shijing Tan
- Department
of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Liming Liu
- ICQD/Hefei
National Laboratory for Physical Sciences at Microscale, and Key Laboratory
of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences,
and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yanan Dai
- Department
of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jindong Ren
- Department
of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jin Zhao
- Department
of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- ICQD/Hefei
National Laboratory for Physical Sciences at Microscale, and Key Laboratory
of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences,
and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hrvoje Petek
- Department
of Physics and Astronomy and Pittsburgh Quantum Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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28
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Fujiyoshi Y, Nemoto T, Kurata H. Studying substrate effects on localized surface plasmons in an individual silver nanoparticle using electron energy-loss spectroscopy. Ultramicroscopy 2017; 175:116-120. [PMID: 28236741 DOI: 10.1016/j.ultramic.2017.01.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 12/20/2016] [Accepted: 01/17/2017] [Indexed: 11/15/2022]
Abstract
In this study, electron energy-loss spectroscopy (EELS) in conjunction with scanning transmission electron microscopy (STEM) was used to investigate surface plasmons in a single silver nanoparticle (NP) on a magnesium oxide substrate, employing an incident electron trajectory parallel to the substrate surface. This parallel irradiation allowed a direct exploration of the substrate effects on localized surface plasmon (LSP) excitations as a function of the distance from the substrate. The presence of the substrate was found to lower the symmetry of the system, such that the resonance energies of LSPs were dependent on the polarization direction relative to the substrate surface. The resulting mode splitting could be detected by applying different electron trajectories, providing results similar to those previously obtained from optical studies using polarized light. However, the LSP maps obtained by STEM-EELS analysis show an asymmetric intensity distribution with the highest intensity at the top surface of the NP (that is, far from the substrate), a result that is not predicted by optical simulations. We show that modifications of the applied electric field by the substrate cause this asymmetric intensity distribution in the LSP maps.
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Affiliation(s)
- Yoshifumi Fujiyoshi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takashi Nemoto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroki Kurata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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29
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Ding W, Hsu LY, Schatz GC. Plasmon-coupled resonance energy transfer: A real-time electrodynamics approach. J Chem Phys 2017; 146:064109. [DOI: 10.1063/1.4975815] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Wendu Ding
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
| | - Liang-Yan Hsu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
| | - George C. Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
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30
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Cherqui C, Wu Y, Li G, Quillin SC, Busche JA, Thakkar N, West CA, Montoni NP, Rack PD, Camden JP, Masiello DJ. STEM/EELS Imaging of Magnetic Hybridization in Symmetric and Symmetry-Broken Plasmon Oligomer Dimers and All-Magnetic Fano Interference. NANO LETTERS 2016; 16:6668-6676. [PMID: 27673696 DOI: 10.1021/acs.nanolett.6b03504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Negative-index metamaterials composed of magnetic plasmon oligomers are actively being investigated for their potential role in optical cloaking, superlensing, and nanolithography applications. A significant improvement to their practicality lies in the ability to function at multiple distinct wavelengths in the visible part of spectrum. Here we utilize the nanometer spatial-resolving power of electron energy-loss spectroscopy to conclusively demonstrate hybridization of magnetic plasmons in oligomer dimers that can achieve this goal. We also show that breaking the dimer's symmetry can induce all-magnetic Fano interferences based solely on the interplay of bright and dark magnetic modes, allowing us to further tailor the system's optical responses. These features are engineered through the design of the oligomer's underlying nanoparticle elements as elongated Ag nanodisks with spectrally isolated long-axis plasmon resonances. The resulting magnetic plasmon oligomers and their hybridized assemblies establish a new design paradigm for optical metamaterials with rich functionality.
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Affiliation(s)
| | - Yueying Wu
- Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Guoliang Li
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | | | | | | | | | | | - Philip D Rack
- Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
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31
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Griffin S, Montoni NP, Li G, Straney PJ, Millstone JE, Masiello DJ, Camden JP. Imaging Energy Transfer in Pt-Decorated Au Nanoprisms via Electron Energy-Loss Spectroscopy. J Phys Chem Lett 2016; 7:3825-3832. [PMID: 27617864 DOI: 10.1021/acs.jpclett.6b01878] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Driven by the desire to understand energy transfer between plasmonic and catalytic metals for applications such as plasmon-mediated catalysis, we examine the spatially resolved electron energy-loss spectra (EELS) of both pure Au nanoprisms and Pt-decorated Au nanoprisms. The EEL spectra and the resulting surface-plasmon mode maps reveal detailed near-field information on the coupling and energy transfer in these systems, thereby elucidating the underlying mechanism of plasmon-driven chemical catalysis in mixed-metal nanostructures. Through a combination of experiment and theory we demonstrate that although the location of the Pt decoration greatly influences the plasmons of the nanoprism, simple spatial proximity is not enough to induce significant energy transfer from the Au to the Pt. What matters more is the spectral overlap between the intrinsic plasmon resonances of the Au nanoprism and Pt decoration, which can be tuned by changing the composition or morphology of either component.
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Affiliation(s)
- Sarah Griffin
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Nicholas P Montoni
- Department of Chemistry, University of Washington , Seattle, Washington 98915, United States
| | - Guoliang Li
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Patrick J Straney
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Jill E Millstone
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - David J Masiello
- Department of Chemistry, University of Washington , Seattle, Washington 98915, United States
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
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32
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Hobbs RG, Manfrinato VR, Yang Y, Goodman SA, Zhang L, Stach EA, Berggren KK. High-Energy Surface and Volume Plasmons in Nanopatterned Sub-10 nm Aluminum Nanostructures. NANO LETTERS 2016; 16:4149-4157. [PMID: 27295061 DOI: 10.1021/acs.nanolett.6b01012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, we use electron energy-loss spectroscopy to map the complete plasmonic spectrum of aluminum nanodisks with diameters ranging from 3 to 120 nm fabricated by high-resolution electron-beam lithography. Our nanopatterning approach allows us to produce localized surface plasmon resonances across a wide spectral range spanning 2-8 eV. Electromagnetic simulations using the finite element method support the existence of dipolar, quadrupolar, and hexapolar surface plasmon modes as well as centrosymmetric breathing modes depending on the location of the electron-beam excitation. In addition, we have developed an approach using nanolithography that is capable of meV control over the energy and attosecond control over the lifetime of volume plasmons in these nanodisks. The precise measurement of volume plasmon lifetime may also provide an opportunity to probe and control the DC electrical conductivity of highly confined metallic nanostructures. Lastly, we show the strong influence of the nanodisk boundary in determining both the energy and lifetime of surface plasmons and volume plasmons locally across individual aluminum nanodisks, and we have compared these observations to similar effects produced by scaling the nanodisk diameter.
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Affiliation(s)
- Richard G Hobbs
- Research Laboratory of Electronics, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Vitor R Manfrinato
- Research Laboratory of Electronics, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Yujia Yang
- Research Laboratory of Electronics, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Sarah A Goodman
- Research Laboratory of Electronics, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Lihua Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Eric A Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Karl K Berggren
- Research Laboratory of Electronics, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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33
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Jafari T, Moharreri E, Amin AS, Miao R, Song W, Suib SL. Photocatalytic Water Splitting-The Untamed Dream: A Review of Recent Advances. Molecules 2016; 21:molecules21070900. [PMID: 27409596 PMCID: PMC6274578 DOI: 10.3390/molecules21070900] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 06/30/2016] [Accepted: 07/05/2016] [Indexed: 01/06/2023] Open
Abstract
Photocatalytic water splitting using sunlight is a promising technology capable of providing high energy yield without pollutant byproducts. Herein, we review various aspects of this technology including chemical reactions, physiochemical conditions and photocatalyst types such as metal oxides, sulfides, nitrides, nanocomposites, and doped materials followed by recent advances in computational modeling of photoactive materials. As the best-known catalyst for photocatalytic hydrogen and oxygen evolution, TiO2 is discussed in a separate section, along with its challenges such as the wide band gap, large overpotential for hydrogen evolution, and rapid recombination of produced electron-hole pairs. Various approaches are addressed to overcome these shortcomings, such as doping with different elements, heterojunction catalysts, noble metal deposition, and surface modification. Development of a photocatalytic corrosion resistant, visible light absorbing, defect-tuned material with small particle size is the key to complete the sunlight to hydrogen cycle efficiently. Computational studies have opened new avenues to understand and predict the electronic density of states and band structure of advanced materials and could pave the way for the rational design of efficient photocatalysts for water splitting. Future directions are focused on developing innovative junction architectures, novel synthesis methods and optimizing the existing active materials to enhance charge transfer, visible light absorption, reducing the gas evolution overpotential and maintaining chemical and physical stability.
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Affiliation(s)
- Tahereh Jafari
- Institute of Materials Science, University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3222, USA.
| | - Ehsan Moharreri
- Institute of Materials Science, University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3222, USA.
| | - Alireza Shirazi Amin
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269-3060, USA.
| | - Ran Miao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269-3060, USA.
| | - Wenqiao Song
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269-3060, USA.
| | - Steven L Suib
- Institute of Materials Science, University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3222, USA.
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269-3060, USA.
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34
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Cherqui C, Thakkar N, Li G, Camden JP, Masiello DJ. Characterizing Localized Surface Plasmons Using Electron Energy-Loss Spectroscopy. Annu Rev Phys Chem 2016; 67:331-57. [DOI: 10.1146/annurev-physchem-040214-121612] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Charles Cherqui
- Department of Chemistry, University of Washington, Seattle, Washington 98195;
| | - Niket Thakkar
- Department of Applied Mathematics, University of Washington, Seattle, Washington 98195
| | - Guoliang Li
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556;
| | - Jon P. Camden
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556;
| | - David J. Masiello
- Department of Chemistry, University of Washington, Seattle, Washington 98195;
- Department of Applied Mathematics, University of Washington, Seattle, Washington 98195
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35
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Hachtel JA, Marvinney C, Mouti A, Mayo D, Mu R, Pennycook SJ, Lupini AR, Chisholm MF, Haglund RF, Pantelides ST. Probing plasmons in three dimensions by combining complementary spectroscopies in a scanning transmission electron microscope. NANOTECHNOLOGY 2016; 27:155202. [PMID: 26934391 DOI: 10.1088/0957-4484/27/15/155202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The nanoscale optical response of surface plasmons in three-dimensional metallic nanostructures plays an important role in many nanotechnology applications, where precise spatial and spectral characteristics of plasmonic elements control device performance. Electron energy loss spectroscopy (EELS) and cathodoluminescence (CL) within a scanning transmission electron microscope have proven to be valuable tools for studying plasmonics at the nanoscale. Each technique has been used separately, producing three-dimensional reconstructions through tomography, often aided by simulations for complete characterization. Here we demonstrate that the complementary nature of the two techniques, namely that EELS probes beam-induced electronic excitations while CL probes radiative decay, allows us to directly obtain a spatially- and spectrally-resolved picture of the plasmonic characteristics of nanostructures in three dimensions. The approach enables nanoparticle-by-nanoparticle plasmonic analysis in three dimensions to aid in the design of diverse nanoplasmonic applications.
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Affiliation(s)
- J A Hachtel
- Department of Physics and Astronomy, Vanderbilt University Nashville, TN 37235, USA. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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36
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Ruditskiy A, Xia Y. Toward the Synthesis of Sub-15 nm Ag Nanocubes with Sharp Corners and Edges: The Roles of Heterogeneous Nucleation and Surface Capping. J Am Chem Soc 2016; 138:3161-7. [DOI: 10.1021/jacs.5b13163] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aleksey Ruditskiy
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Younan Xia
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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37
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Wu B, Liu D, Mubeen S, Chuong TT, Moskovits M, Stucky GD. Anisotropic Growth of TiO2 onto Gold Nanorods for Plasmon-Enhanced Hydrogen Production from Water Reduction. J Am Chem Soc 2016; 138:1114-7. [DOI: 10.1021/jacs.5b11341] [Citation(s) in RCA: 355] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Binghui Wu
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
- Collaborative
Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Deyu Liu
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Syed Mubeen
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Tracy T Chuong
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Martin Moskovits
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Galen D. Stucky
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
- Collaborative
Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
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38
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Hodges JM, Morse JR, Williams ME, Schaak RE. Microscopic Investigation of Chemoselectivity in Ag-Pt-Fe3O4 Heterotrimer Formation: Mechanistic Insights and Implications for Controlling High-Order Hybrid Nanoparticle Morphology. J Am Chem Soc 2015; 137:15493-500. [PMID: 26599998 DOI: 10.1021/jacs.5b10254] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three-component hybrid nanoparticle heterotrimers, which are important multifunctional constructs that underpin diverse applications, are commonly synthesized by growing a third domain off of a two-component heterodimer seed. However, because heterodimer seeds expose two distinct surfaces that often can both support nucleation and growth, selectively targeting one particular surface is critical for exclusively accessing a desired configuration. Understanding and controlling nucleation and growth therefore enables the rational formation of high-order hybrid nanoparticles. Here, we report an in-depth microscopic investigation that probes the chemoselective addition of Ag to Pt-Fe3O4 heterodimer seeds to form Ag-Pt-Fe3O4 heterotrimers. We find that the formation of the Ag-Pt-Fe3O4 heterotrimers initiates with indiscriminate Ag nucleation onto both the Pt and Fe3O4 surfaces of Pt-Fe3O4, followed by surface diffusion and coalescence of Ag onto the Pt surface to form the Ag-Pt-Fe3O4 product. Control experiments reveal that the size of the Ag domain of Ag-Pt-Fe3O4 correlates with the overall surface area of the Pt-Fe3O4 seeds, which is consistent with the coalescence of Ag through a surface-mediated process and can also be exploited to tune the size of the Ag domain. Additionally, we observe that small iron oxide islands on the Pt surface of the Pt-Fe3O4 seeds, deposited during the formation of Pt-Fe3O4, define the morphology of the Ag domain, which in turn influences its optical properties. These results provide unprecedented microscopic insights into the pathway by which Ag-Pt-Fe3O4 heterotrimer nanoparticles form and uncover new design guidelines for the synthesis of high-order hybrid nanoparticles with precisely targeted morphologies and properties.
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Affiliation(s)
- James M Hodges
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - James R Morse
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Mary Elizabeth Williams
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Raymond E Schaak
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
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39
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Li G, Cherqui C, Wu Y, Bigelow NW, Simmons PD, Rack PD, Masiello DJ, Camden JP. Examining Substrate-Induced Plasmon Mode Splitting and Localization in Truncated Silver Nanospheres with Electron Energy Loss Spectroscopy. J Phys Chem Lett 2015; 6:2569-2576. [PMID: 26266735 DOI: 10.1021/acs.jpclett.5b00961] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Motivated by the need to study the size dependence of nanoparticle-substrate systems, we present a combined experimental and theoretical electron energy loss spectroscopy (EELS) study of the plasmonic spectrum of substrate-supported truncated silver nanospheres. This work spans the entire classical range of plasmonic behavior probing particles of 20-1000 nm in diameter, allowing us to map the evolution of localized surface plasmons into surface plasmon polaritons and study the size dependence of substrate-induced mode splitting. This work constitutes the first nanoscopic characterization and imaging of these effects in truncated nanospheres, setting the stage for the systematic study of plasmon-mediated energy transfer in nanoparticle-substrate systems.
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Affiliation(s)
- Guoliang Li
- †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Charles Cherqui
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Yueying Wu
- §Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Nicholas W Bigelow
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Philip D Simmons
- ∥Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Philip D Rack
- §Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
- ⊥Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David J Masiello
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Jon P Camden
- †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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