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Wan J, Kong H, Li Z, Ma L, Ma Y, Wang Y, Zheng Y. Seeded Growth of Size-Tunable Au@Ag Core-Shell Nano-Octahedra and Their Yolk-Shell Derivatives for Near Infrared Photothermal Conversion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11030-11038. [PMID: 38747679 DOI: 10.1021/acs.langmuir.4c00460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Gold-based nanostructures with well-defined morphologies and hollow interiors have significant potential as a versatile platform for various plasmonic applications including biomedical diagnostics and sensing. In this study, we report the synthesis of Au@Ag core-shell nanocrystals with perfect octahedral shapes and tunable edge lengths via seeded growth. These nanocrystals were then oxidatively carved into yolk-shell nanocages with a retained octahedral morphology. The increase in octahedral edge length and volume of the interior hollow cavity synergistically leads to a red-shift of the LSPR peak. As a result, the optimized Au@AuAg yolk-shell octahedral nanocages showed a remarkable temperature increase of 23 °C upon 15 min irradiation of an 808 nm laser at a power density of 1 W cm-2. This study provides a feasible strategy for creating octahedral AuAg nanostructures with tunable sizes and hollow interiors and validates their promising use in NIR photothermal conversion.
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Affiliation(s)
- Jiating Wan
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 273155, China
| | - Haixia Kong
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Zhiyong Li
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Intelligent Optics & Photonics Research Center, Jiaxing Research Institute Zhejiang University, Jiaxing 314000, China
| | - Le Ma
- Shandong Leadernano Tech. Co., Ltd., Jining, Shandong 272000, China
| | - Yanyun Ma
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yi Wang
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Yiqun Zheng
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 273155, China
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2
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Creyer MN, Jin Z, Retout M, Yim W, Zhou J, Jokerst JV. Gold-Silver Core-Shell Nanoparticle Crosslinking Mediated by Protease Activity for Colorimetric Enzyme Detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14200-14207. [PMID: 36351199 DOI: 10.1021/acs.langmuir.2c02219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Plasmonic nanoparticles produce a localized surface plasmon resonance (LSPR) under optical excitation. The LSPR of nanoparticles can shift in response to changes in the local dielectric environment and produce a color change. This color change can be observed by the naked eye due to the exceptionally large extinction coefficients (108-1011 M-1 cm-1) of plasmonic nanoparticles. Herein, we investigate the optical shifts (i.e., color change) of three unique gold-silver core-shell nanoparticle structures in response to changes in their dielectric environment upon nanoparticle aggregation. Aggregation is induced by a cysteine-containing peptide that has a sulfhydryl near its N and C termini, which crosslinks nanoparticles. Furthermore, we demonstrate that adding proline spacers between the cysteines impacts the degree of aggregation and, ultimately, the color response. Using this information, we construct a colorimetric enzyme assay, where the signal produced from nanoparticle aggregation is modulated by proteolysis. The degree of aggregation and the resulting optical shift can be correlated with enzyme concentration with high linearity (R2 = 0.998). Overall, this study explores the optical properties of gold-silver core-shell nanoparticles in a dispersed vs aggregated state and leverages that information to develop an enzyme sensor with a spectral LOD of 0.47 ± 0.09 nM.
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3
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Cortie MB, Arnold MD, Keast VJ. The Quest for Zero Loss: Unconventional Materials for Plasmonics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904532. [PMID: 31789443 DOI: 10.1002/adma.201904532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/14/2019] [Indexed: 06/10/2023]
Abstract
There has been an ongoing quest to optimize the materials used to build plasmonic devices: first the elements were investigated, then alloys and intermetallic compounds, later semiconductors were considered, and, most recently, there has been interest in using more exotic materials such as topological insulators and conducting oxides. The quality of the plasmon resonances in these materials is closely correlated with their structure and properties. In general gold and silver are the most commonly specified materials for these applications but they do have weaknesses. Here, it is shown how, in specific circumstances, the selection of certain other materials might be more useful. Candidate alternatives include Tix N, VO2 , Al, Cu, Al-doped ZnO, and Cu-Al alloys. The relative merits of these choices and the many pitfalls and subtle problems that arise are discussed, and a frank perspective on the field is provided.
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Affiliation(s)
- Michael B Cortie
- School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Matthew D Arnold
- School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Vicki J Keast
- School of Mathematical and Physical Sciences, University of Newcastle, Newcastle, NSW, 2308, Australia
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4
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Hu X, Wang X, Ge Z, Zhang L, Zhou Y, Li J, Bu L, Wu H, Li P, Xu W. Bimetallic plasmonic Au@Ag nanocuboids for rapid and sensitive detection of phthalate plasticizers with label-free surface-enhanced Raman spectroscopy. Analyst 2019; 144:3861-3869. [PMID: 31099357 DOI: 10.1039/c9an00251k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Phthalate plasticizers (PAEs) are posing a serious threat to human health, so it is urgent to develop effective and reliable ways to detect the food additives PAEs sensitively. In this study, we have reported plasmonic bimetallic Au@Ag core-shell nanocuboids for the rapid and sensitive detection of PAEs in liquor samples with a label-free Surface-enhanced Raman Spectroscopy (SERS) strategy. Compared with single-element nanostructures, the bimetallic SERS platform can integrate two distinct functions into a single entity with unprecedented properties. Consequently, we synthesized Au@Ag nanocuboids (Au@Ag NCs) composed of a Au nanorod (Au NR) core and a Ag cuboid shell, which could produce richer and broader plasmonic resonance modes than Au NRs. It is obvious that the SERS signals of crystal violet (CV) and butyl benzyl phthalate (BBP) reached a maximum as the thickness of the Ag coating shell was in a certain threshold and there was a strong dependence of the Raman enhancement on the Ag cuboid shell-thickness. Based on the optimized size, the sensitivity and repeatability of Au@Ag NCs were evaluated with limits of detection (LODs) at around 10-9 M both for BBP and diethylhexyl phthalate (DEHP). In addition, the SERS active substrate core-shell Au@Ag NCs can be used to detect BBP as low as 1.3 mg kg-1 spiked into the liquor samples. Thereby, the unique bimetallic Au@Ag NCs showed a huge potential for the rapid and sensitive detection of PAEs in liquor samples.
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Affiliation(s)
- Xiaoyan Hu
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, Hefei 230038, China
| | - Xinru Wang
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, Hefei 230038, China
| | - Zipan Ge
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, Hefei 230038, China
| | - Le Zhang
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, Hefei 230038, China
| | - Yaru Zhou
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui, Hefei 230009, China
| | - Jingya Li
- Department of Biological Physics, University of Science and Technology of China, Anhui, Hefei 230027, China
| | - Linfeng Bu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Hengan Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Pan Li
- Center of medical physics and technology, Hefei institutes of physical science, CAS, Hefei 230021, China.
| | - Weiping Xu
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, Hefei 230038, China and The First Affiliated Hospital of USTC, Anhui Provincial Hospital, Anhui, Hefei 230001, China.
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5
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Hamon C, Goldmann C, Constantin D. Controlling the symmetry of supercrystals formed by plasmonic core-shell nanorods with tunable cross-section. NANOSCALE 2018; 10:18362-18369. [PMID: 30255915 DOI: 10.1039/c8nr06376a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tailoring the crystal structure of plasmonic nanoparticle superlattices is a crucial step in controlling the collective physical response of these nanostructured materials. Various strategies can achieve this goal for isotropic nanoparticles, but few of them have been successful with anisotropic building blocks. In this work we use hybrid particles, consisting of gold nanorods encased in silver shells with a thickness that can be controlled from a few atomic layers to tens of nanometers. The particles were synthesized, characterized by a combination of techniques and assembled into supercrystals with a smectic B configuration, i.e. a 2D in-plane periodic order without interplane lateral correlations. We showed that, by tuning the silver shell thickness, the in-plane order can be changed from hexagonal to square and the lattice parameters can be adjusted. The spatial distribution of the supercrystal was systematically studied by optical and electron microscopy and by small-angle X-ray scattering. Through optimized surface chemistry, we obtain homogeneous, millimeter-size films of standing nanoparticles, which hold promise for all applications using plasmon-enhanced technologies.
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Affiliation(s)
- Cyrille Hamon
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France.
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6
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Tian Y, Li G, Zhang H, Xu L, Jiao A, Chen F, Chen M. Construction of optimized Au@Ag core-shell nanorods for ultralow SERS detection of antibiotic levofloxacin molecules. OPTICS EXPRESS 2018; 26:23347-23358. [PMID: 30184986 DOI: 10.1364/oe.26.023347] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 08/22/2018] [Indexed: 05/25/2023]
Abstract
The abuse of antibiotics in animal husbandry has been regarded as a daunting public health risk, facilitating the emergence and spread of resistant pathogens to humans. Herein, bimetallic Au@Ag core-shell nanorods (NRs) with precise, controllable Ag shell-thickness (2.1~14.1 nm) were fabricated and developed for ultralow detection of levofloxacin molecules using surface enhanced Raman scattering spectroscopy (SERS). We found that the Au@Ag NRs with 7.3 nm Ag shell-thickness provided maximized SERS activity in comparison with other as-prepared nanosubstrates in this paper. The detection limit of levofloxacin molecules was achieved at a nanomole (nM) level of 0.37 ng/L (10-9 M), providing ultrasensitive assessment of antibiotics in natural ecosystems.
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7
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Cuetos A, Dennison M, Masters A, Patti A. Phase behaviour of hard board-like particles. SOFT MATTER 2017; 13:4720-4732. [PMID: 28617489 DOI: 10.1039/c7sm00726d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We examine the phase behaviour of colloidal suspensions of hard board-like particles (HBPs) as a function of their shape anisotropy, and observe a fascinating spectrum of nematic, smectic, and columnar liquid-crystalline phases, whose formation is entirely driven by excluded volume effects. We map out the phase diagram of short and long HBPs by gradually modifying their shape from prolate to oblate and investigate the long-range order of the resulting morphologies along the phase directors and perpendicularly to them. The intrinsic biaxial nature of these particles promotes the formation of translationally ordered biaxial phases, but does not show solid evidence that it would, per se, promote the formation of the biaxial nematic phase. Our simulations shed light on the controversial existence of the discotic smectic phase, whose layers are as thick as the minor particle dimension, which is stable in a relatively large portion of our phase diagrams. Additionally, we modify the Onsager theory to describe the isotropic-nematic phase transition of freely rotating biaxial particles as a function of the particle width, and find a relatively strong first-order signature, in excellent agreement with our simulations. In an attempt to shed light on the elusive formation of the biaxial nematic phase, we apply this theory to predict the uniaxial-biaxial nematic phase transition and confirm, again in agreement with simulations, the prevailing stability of the translationally ordered smectic phase over the orientationally ordered biaxial nematic phase.
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Affiliation(s)
- Alejandro Cuetos
- Department of Physical, Chemical and Natural Systems, Pablo de Olavide University, 41013 Sevilla, Spain
| | - Matthew Dennison
- Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany
| | - Andrew Masters
- School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester, M13 9PL, UK.
| | - Alessandro Patti
- School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester, M13 9PL, UK.
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8
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Galati E, Tebbe M, Querejeta-Fernández A, Xin HL, Gang O, Zhulina EB, Kumacheva E. Shape-Specific Patterning of Polymer-Functionalized Nanoparticles. ACS NANO 2017; 11:4995-5002. [PMID: 28460162 DOI: 10.1021/acsnano.7b01669] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chemically and topographically patterned nanoparticles (NPs) with dimensions on the order of tens of nanometers have a diverse range of applications and are a valuable system for fundamental research. Recently, thermodynamically controlled segregation of a smooth layer of polymer ligands into pinned micelles (patches) offered an approach to nanopatterning of polymer-functionalized NPs. Control of the patch number, size, and spatial distribution on the surface of spherical NPs has been achieved, however, the role of NP shape remained elusive. In the present work, we report the role of NP shape, namely, the effect of the local surface curvature, on polymer segregation into surface patches. For polymer-functionalized metal nanocubes, we show experimentally and theoretically that the patches form preferentially on the high-curvature regions such as vertices and edges. An in situ transformation of the nanocubes into nanospheres leads to the change in the number and distribution of patches; a process that is dominated by the balance between the surface energy and the stretching energy of the polymer ligands. The experimental and theoretical results presented in this work are applicable to surface patterning of polymer-capped NPs with different shapes, thus enabling the exploration of patch-directed self-assembly, as colloidal surfactants, and as templates for the synthesis of hybrid nanomaterials.
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Affiliation(s)
- Elizabeth Galati
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H6, Canada
| | - Moritz Tebbe
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H6, Canada
| | | | - Huolin L Xin
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Oleg Gang
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Ekaterina B Zhulina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences , Saint Petersburg, 199004, Russia
- Saint Petersburg National University of Informational Technologies , Mechanics and Optics, Saint Petersburg 197101, Russia
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto , Toronto, Ontario M5S 3H6, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto , Toronto, Ontario M5S 3G9, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto , Toronto, Ontario M5S 3E5, Canada
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9
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Melnikau D, Govyadinov AA, Sánchez-Iglesias A, Grzelczak M, Liz-Marzán LM, Rakovich YP. Strong Magneto-Optical Response of Nonmagnetic Organic Materials Coupled to Plasmonic Nanostructures. NANO LETTERS 2017; 17:1808-1813. [PMID: 28157323 PMCID: PMC5744660 DOI: 10.1021/acs.nanolett.6b05128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 01/25/2017] [Indexed: 06/06/2023]
Abstract
Plasmonic nanoparticles (PNPs) can significantly modify the optical properties of nearby organic molecules and thus present an attractive opportunity for sensing applications. However, the utilization of PNPs in conventional absorption, fluorescence, or Raman spectroscopy techniques is often ineffective due to strong absorption background and light scattering, particularly in the case of turbid solutions, cell suspensions, and biological tissues. Here we show that nonmagnetic organic molecules may exhibit magneto-optical response due to binding to a PNP. Specifically, we detect strong magnetic circular dichroism signal from supramolecular J-aggregates, a representative organic dye, upon binding to silver-coated gold nanorods. We explain this effect by strong coupling between the J-aggregate exciton and the nanoparticle plasmon, leading to the formation of a hybrid state in which the exciton effectively acquires magnetic properties from the plasmon. Our findings are fully corroborated by theoretical modeling and constitute a novel magnetic method for chemo- and biosensing, which (upon adequate PNP functionalization) is intrinsically insensitive to the organic background and thus offers a significant advantage over conventional spectroscopy techniques.
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Affiliation(s)
- Dzmitry Melnikau
- CIC NanoGUNE, Avenida Tolosa 76, 20018 Donostia-San Sebastián, Spain
- National University of Ireland Galway, University Road, Galway, Ireland
| | | | | | - Marek Grzelczak
- CIC biomaGUNE, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Luis M. Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
- Biomedical Research Networking Center in
Bioengineering Biomaterials and Nanomedicine, Ciber-BBN, Paseo de
Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Yury P. Rakovich
- Centro de Física de Materiales
(MPC, CSIC-UPV/EHU) Paseo
Manuel de Lardizabal 5, Donostia-San Sebastián, 20018, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, Donostia-San
Sebastián, 20018, Spain
- IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
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10
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Kitamura T, Niidome Y. Colloidal Dispersion of Gold Nanorods and Gold-Silver Core-Shell Nanorods in Polar Organic Solvents. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160297] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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11
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Reguera J, Langer J, Jiménez de Aberasturi D, Liz-Marzán LM. Anisotropic metal nanoparticles for surface enhanced Raman scattering. Chem Soc Rev 2017; 46:3866-3885. [DOI: 10.1039/c7cs00158d] [Citation(s) in RCA: 344] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Anisotropy in plasmonic metal nanoparticles plays a major role in the enhancement of the Raman scattering of adsorbed molecules.
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Affiliation(s)
- Javier Reguera
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Judith Langer
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Dorleta Jiménez de Aberasturi
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Luis M. Liz-Marzán
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
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12
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Kiya A, Tsuru Y, Niidome Y. Enzymatic Decomposition of Hydrogen Peroxides to Suppress Oxidation of Gold–Silver Core–Shell Nanorods: Colorimetry of Horseradish Peroxidase (HRP) and Catalase. CHEM LETT 2016. [DOI: 10.1246/cl.160755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Ashkarran AA, Daemi S, Derakhshi M. Destructive effect of solar light on morphology of colloidal silver nanocubes. COLLOID JOURNAL 2016. [DOI: 10.1134/s1061933x16050021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Ellis CT, Tischler JG, Glembocki OJ, Bezares FJ, Giles AJ, Kasica R, Shirey L, Owrutsky JC, Chigrin DN, Caldwell JD. Aspect-ratio driven evolution of high-order resonant modes and near-field distributions in localized surface phonon polariton nanostructures. Sci Rep 2016; 6:32959. [PMID: 27622525 PMCID: PMC5020686 DOI: 10.1038/srep32959] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/16/2016] [Indexed: 11/08/2022] Open
Abstract
Polar dielectrics have garnered much attention as an alternative to plasmonic metals in the mid- to long-wave infrared spectral regime due to their low optical losses. As such, nanoscale resonators composed of these materials demonstrate figures of merit beyond those achievable in plasmonic equivalents. However, until now, only low-order, phonon-mediated, localized polariton resonances, known as surface phonon polaritons (SPhPs), have been observed in polar dielectric optical resonators. In the present work, we investigate the excitation of 16 distinct high-order, multipolar, localized surface phonon polariton resonances that are optically excited in rectangular pillars etched into a semi-insulating silicon carbide substrate. By elongating a single pillar axis we are able to significantly modify the far- and near-field properties of localized SPhP resonances, opening the door to realizing narrow-band infrared sources with tailored radiation patterns. Such control of the near-field behavior of resonances can also impact surface enhanced infrared optical sensing, which is mediated by polarization selection rules, as well as the morphology and strength of resonator hot spots. Furthermore, through the careful choice of polar dielectric material, these results can also serve as the guiding principles for the generalized design of optical devices that operate from the mid- to far-infrared.
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Affiliation(s)
| | | | | | - Francisco J. Bezares
- U.S. Naval Research Laboratory, Washington,
DC, USA
- American Society for Engineering Education,
Washington, DC, USA
| | | | - Richard Kasica
- Center for Nanoscale Science and Technology, National Institutes
of Standards and Technology, Gaithersburg, MD,
USA
| | | | | | - Dmitry N. Chigrin
- I. Institute of Physics (IA), RWTH Aachen University,
Aachen, Germany
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15
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Niidome Y, Haine AT, Niidome T. Anisotropic Gold-based Nanoparticles: Preparation, Properties, and Applications. CHEM LETT 2016. [DOI: 10.1246/cl.160124] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yasuro Niidome
- Department of Chemistry and Bioscience, Graduate School of Science and Engineering, Kagoshima University
| | - Aung Thu Haine
- Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University
- Department of Chemical Engineering, Yangon Technological University
| | - Takuro Niidome
- Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University
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16
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Goris B, Guzzinati G, Fernández-López C, Pérez-Juste J, Liz-Marzán LM, Trügler A, Hohenester U, Verbeeck J, Bals S, Van Tendeloo G. Plasmon Mapping in Au@Ag Nanocube Assemblies. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2014; 118:15356-15362. [PMID: 25067991 PMCID: PMC4106270 DOI: 10.1021/jp502584t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/27/2014] [Indexed: 05/15/2023]
Abstract
Surface plasmon modes in metallic nanostructures largely determine their optoelectronic properties. Such plasmon modes can be manipulated by changing the morphology of the nanoparticles or by bringing plasmonic nanoparticle building blocks close to each other within organized assemblies. We report the EELS mapping of such plasmon modes in pure Ag nanocubes, Au@Ag core-shell nanocubes, and arrays of Au@Ag nanocubes. We show that these arrays enable the creation of interesting plasmonic structures starting from elementary building blocks. Special attention will be dedicated to the plasmon modes in a triangular array formed by three nanocubes. Because of hybridization, a combination of such nanotriangles is shown to provide an antenna effect, resulting in strong electrical field enhancement at the narrow gap between the nanotriangles.
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Affiliation(s)
- Bart Goris
- EMAT, University
of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Giulio Guzzinati
- EMAT, University
of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | | | - Jorge Pérez-Juste
- Departamento de Química Física, Universidade de Vigo, 36310 Vigo, Spain
| | - Luis M. Liz-Marzán
- Departamento de Química Física, Universidade de Vigo, 36310 Vigo, Spain
- BioNanoPlasmonics
Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia - San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Andreas Trügler
- Institut
für Physik, Karl-Franzens-Universität
Graz, Universitätsplatz
5, 8010 Graz, Austria
| | - Ulrich Hohenester
- Institut
für Physik, Karl-Franzens-Universität
Graz, Universitätsplatz
5, 8010 Graz, Austria
| | - Jo Verbeeck
- EMAT, University
of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Sara Bals
- EMAT, University
of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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17
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Arnold M, Blaber M, Ford M. Local plasmon resonances of metal-in-metal core-shells. OPTICS EXPRESS 2014; 22:3186-3198. [PMID: 24663610 DOI: 10.1364/oe.22.003186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We investigate the tunability and strength of the localized surface plasmons of binary metal-in-metal core-shells. Ellipsoids are used as an analytical model to show how the fill factor continuously tunes a hybridized mode between those of the constituents, suggesting the use of metal combinations with widely differing plasma frequencies for broad tunability. A quasistatic eigenmode method is used separate geometric and material parameters to facilitate prediction of hybridized dipole modes in arbitrary shapes. A modified ellipsoid model is found to adequately describe the symmetric dipole-dipole resonance of well-rounded cuboids.
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Raziman TV, Martin OJF. Polarisation charges and scattering behaviour of realistically rounded plasmonic nanostructures. OPTICS EXPRESS 2013; 21:21500-21507. [PMID: 24104025 DOI: 10.1364/oe.21.021500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We study the effect of realistically rounding nanorod antennae and gap antennae on their far field and near field properties. The simulations show that both scattering behaviour and polarisation charge distribution depend significantly on rounding. Rounding is also seen to have a major effect on coupling between nanostructures. The results suggest that it is important to incorporate the effect of rounding to be able to design plasmonic nanostructures with desired properties.
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19
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Hamasaki Y, Nakashima N, Niidome Y. Electrochemical Oxidation of Silver Shells on Gold Nanorods in Potassium Chloride and Phosphate Buffer Solutions. CHEM LETT 2013. [DOI: 10.1246/cl.130350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Naotoshi Nakashima
- Department of Applied Chemistry, Kyushu University
- World Premier International (WPI) Research Center, International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University
- JST-CREST
| | - Yasuro Niidome
- Department of Applied Chemistry, Kyushu University
- World Premier International (WPI) Research Center, International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University
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