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Song M, Fumagalli P, Schmid M. Scanning near-field optical microscopy measurements and simulations of regularly arranged silver nanoparticles. NANOTECHNOLOGY 2023; 35:065702. [PMID: 37931313 DOI: 10.1088/1361-6528/ad0a0e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/06/2023] [Indexed: 11/08/2023]
Abstract
Silver nanoparticles on a glass substrate are experimentally investigated by aperture scanning near-field optical microscopy (a-SNOM). To understand the experimental results, finite-element-method simulations are performed building a theoretical model of the a-SNOM geometry. We systematically vary parameters like aperture size, aluminum-coating thickness, tip cone angle, and tip-surface distance and discuss their influence on the near-field enhancement. All these investigations are performed comparatively for constant-height and constant-gap scanning modes. In the end, we establish a reliable and stable optical model for simulating a-SNOM measurements, which is capable of reproducing trends observed in experimental data.
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Affiliation(s)
- M Song
- Institut für Experimentalphysik, Freie Universität Berlin, D-14195 Berlin, Germany
- Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, D-14109 Berlin, Germany
| | - P Fumagalli
- Institut für Experimentalphysik, Freie Universität Berlin, D-14195 Berlin, Germany
| | - M Schmid
- Institut für Experimentalphysik, Freie Universität Berlin, D-14195 Berlin, Germany
- Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, D-14109 Berlin, Germany
- Faculty of Physics and CENIDE, University of Duisburg-Essen, Forsthausweg 2, D-47057 Duisburg, Germany
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Kim JM, Lee C, Lee Y, Lee J, Park SJ, Park S, Nam JM. Synthesis, Assembly, Optical Properties, and Sensing Applications of Plasmonic Gap Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006966. [PMID: 34013617 DOI: 10.1002/adma.202006966] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/30/2020] [Indexed: 06/12/2023]
Abstract
Plasmonic gap nanostructures (PGNs) have been extensively investigated mainly because of their strongly enhanced optical responses, which stem from the high intensity of the localized field in the nanogap. The recently developed methods for the preparation of versatile nanogap structures open new avenues for the exploration of unprecedented optical properties and development of sensing applications relying on the amplification of various optical signals. However, the reproducible and controlled preparation of highly uniform plasmonic nanogaps and the prediction, understanding, and control of their optical properties, especially for nanogaps in the nanometer or sub-nanometer range, remain challenging. This is because subtle changes in the nanogap significantly affect the plasmonic response and are of paramount importance to the desired optical performance and further applications. Here, recent advances in the synthesis, assembly, and fabrication strategies, prediction and control of optical properties, and sensing applications of PGNs are discussed, and perspectives toward addressing these challenging issues and the future research directions are presented.
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Affiliation(s)
- Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Chungyeon Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Yeonhee Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jinhaeng Lee
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, South Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, South Korea
| | - Sungho Park
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
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Zhang Y, Min C, Dou X, Wang X, Urbach HP, Somekh MG, Yuan X. Plasmonic tweezers: for nanoscale optical trapping and beyond. LIGHT, SCIENCE & APPLICATIONS 2021; 10:59. [PMID: 33731693 PMCID: PMC7969631 DOI: 10.1038/s41377-021-00474-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 12/24/2020] [Accepted: 01/14/2021] [Indexed: 05/06/2023]
Abstract
Optical tweezers and associated manipulation tools in the far field have had a major impact on scientific and engineering research by offering precise manipulation of small objects. More recently, the possibility of performing manipulation with surface plasmons has opened opportunities not feasible with conventional far-field optical methods. The use of surface plasmon techniques enables excitation of hotspots much smaller than the free-space wavelength; with this confinement, the plasmonic field facilitates trapping of various nanostructures and materials with higher precision. The successful manipulation of small particles has fostered numerous and expanding applications. In this paper, we review the principles of and developments in plasmonic tweezers techniques, including both nanostructure-assisted platforms and structureless systems. Construction methods and evaluation criteria of the techniques are presented, aiming to provide a guide for the design and optimization of the systems. The most common novel applications of plasmonic tweezers, namely, sorting and transport, sensing and imaging, and especially those in a biological context, are critically discussed. Finally, we consider the future of the development and new potential applications of this technique and discuss prospects for its impact on science.
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Affiliation(s)
- Yuquan Zhang
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
| | - Changjun Min
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China.
| | - Xiujie Dou
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
- Optics Research Group, Delft University of Technology, Lorentzweg 1, 2628CJ, Delft, The Netherlands
| | - Xianyou Wang
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
| | - Hendrik Paul Urbach
- Optics Research Group, Delft University of Technology, Lorentzweg 1, 2628CJ, Delft, The Netherlands
| | - Michael G Somekh
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
| | - Xiaocong Yuan
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China.
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Sun Q, Zu S, Misawa H. Ultrafast photoemission electron microscopy: Capability and potential in probing plasmonic nanostructures from multiple domains. J Chem Phys 2020; 153:120902. [DOI: 10.1063/5.0013659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Quan Sun
- Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Shuai Zu
- Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Hiroaki Misawa
- Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan
- Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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Fujiwara H, Suzuki T, Pin C, Sasaki K. Localized ZnO Growth on a Gold Nanoantenna by Plasmon-Assisted Hydrothermal Synthesis. NANO LETTERS 2020; 20:389-394. [PMID: 31869239 DOI: 10.1021/acs.nanolett.9b04073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The excitation of localized surface plasmon resonances (LSPRs) in metal nanostructures enables subwavelength photon localization and large electric field enhancement, which can be advantageously used to strongly enhance light-matter interactions at the nanoscale. For this purpose, efficient methods for deterministically handling and arranging nanomaterials at the exact position of the localized electric field are required. In this Letter, we propose a novel method based on a hydrothermal synthesis reaction to locally and selectively synthesize zinc oxide in a plasmonic nanoantenna. We first make evident the role of LSPR for achieving efficient heating of gold nanostructures. Then, by selectively addressing one of the LSPRs of a gold antenna, we demonstrate that localized zinc oxide formation at the targeted location of the antenna can be achieved due to the nanoscale confinement of the heat production.
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Affiliation(s)
- Hideki Fujiwara
- Faculty of Engineering , Hokkai-Gakuen University , 1-1, Nishi 11, Minami 26 , Chuo-ku, Sapporo 064-0926 , Japan
| | - Tatsuro Suzuki
- Research Institute for Electronic Science , Hokkaido University , N20W10 , Kitaku, Sapporo 001-0020 , Japan
| | - Christophe Pin
- Research Institute for Electronic Science , Hokkaido University , N20W10 , Kitaku, Sapporo 001-0020 , Japan
| | - Keiji Sasaki
- Research Institute for Electronic Science , Hokkaido University , N20W10 , Kitaku, Sapporo 001-0020 , Japan
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Tanaka YY, Shimura T. Tridirectional Polarization Routing of Light by a Single Triangular Plasmonic Nanoparticle. NANO LETTERS 2017; 17:3165-3170. [PMID: 28388075 DOI: 10.1021/acs.nanolett.7b00672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Achieving high directionality of scattered light in combination with high flexibility of the direction using plasmonic nanoparticles is desirable for future optical nanocircuits and on-chip optical links. The plasmonic characteristics of nanoparticles strongly depend on their geometry. Here, we studied directional light scattering by a single-element triangular plasmonic nanoparticle. Our experimental and simulation results demonstrated that the triangular nanoparticle spatially sorted the incoming photons into three different scattering directions according to their polarization direction, including circular polarization, despite its compact overall volume of ∼λ3/300. The broken mirror symmetry and rotational symmetry of the triangular nanoparticle enabled such passive tridirectional polarization routing through the constructive and destructive interference of different plasmon modes. Our findings should markedly broaden the versatility of triangular plasmonic nanodevices, extending their possible practical applications in photon couplers and sorters and chemo-/biosensors.
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Affiliation(s)
- Yoshito Y Tanaka
- Institute of Industrial Science, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
- Japan Science and Technology Agency, PRESTO , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsutomu Shimura
- Institute of Industrial Science, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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