1
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Cha L, Li P. Metallic On-Chip Light Concentrators Fabricated by In Situ Plasmonic Etching Technique. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4195. [PMID: 36500820 PMCID: PMC9739918 DOI: 10.3390/nano12234195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/19/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
One-dimensional tapered metallic nanostructures are highly interesting for nanophotonic applications because of their plasmonic waveguiding and field-focusing properties. Here, we developed an in situ etching technique for unique tapered crystallized silver nanowire fabrication. Under the focused laser spot, plasmon-induced charge separation of chemically synthesized nanowires is excited, which triggers the uniaxial etching of silver nanowires along the radial direction with decreasing rate, forming tapered structures several micrometers long and with diameter attenuating from hundreds to tens of nanometers. These tapered metallic nanowires have smooth surfaces showing excellent performance for plasmonic waveguiding, and can be good candidates for nanocircuits and remote-excitation sources.
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Affiliation(s)
- Lihua Cha
- School of Law, Central University of Finance and Economics, Beijing 100081, China
| | - Pan Li
- Institute of Analysis and Testing, Beijing Academy of Science and Technology, Beijing 100089, China
- Department of Physics, Capital Normal University, Beijing 100048, China
- School of Information Technology, Beijing City University, Beijing 100083, China
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2
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Roy S, Sarkhel S, Bisht D, Hanumantharao SN, Rao S, Jaiswal A. Antimicrobial Mechanisms of Biomaterials: From Macro to Nano. Biomater Sci 2022; 10:4392-4423. [DOI: 10.1039/d2bm00472k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Overcoming the global concern of antibiotic resistance is one of the biggest challenge faced by scientists today and the key to tackle this issue of emerging infectious diseases is the...
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3
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Jin R, Xu Y, Dong ZG, Liu Y. Optical Pulling Forces Enabled by Hyperbolic Metamaterials. NANO LETTERS 2021; 21:10431-10437. [PMID: 34898220 DOI: 10.1021/acs.nanolett.1c03772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We propose a novel approach to generating optical pulling forces on a gold nanowire, which are placed inside or above a hyperbolic metamaterial and subjected to plane wave illumination. Two mechanisms are found to induce the optical pulling force, including the concave isofrequency contour of the hyperbolic metamaterial and the excitation of directional surface plasmon polaritons. We systematically study the optical forces under various conditions, including the wavelength, the angle of incidence of light, and the nanowire radius. It is shown that the optical pulling force enabled by hyperbolic metamaterials is broadband and insensitive to the angle of incidence. The mechanisms and results reported here open a new avenue to manipulating nanoscale objects.
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Affiliation(s)
| | | | - Zheng-Gao Dong
- Physics Department, Southeast University, Nanjing 211189, China
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4
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Liaw JW, Mao SY, Luo JY, Ku YC, Kuo MK. Surface plasmon polaritons of higher-order mode and standing waves in metallic nanowires. OPTICS EXPRESS 2021; 29:18876-18888. [PMID: 34154134 DOI: 10.1364/oe.425958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/27/2021] [Indexed: 06/13/2023]
Abstract
The surface plasmon polaritons (SPPs) of higher-order mode propagating along a plasmonic nanowire (NW) or an elongated nanorod (NR) are studied theoretically. The dispersion relations of SPPs in NWs of different radii, obtained from a transcendental equation, show that the propagation lengths of SPPs of mode 1 and 2 at a specific frequency are longer than that of mode 0. For the higher-order mode, the spatial phase of the longitudinal component of electric field at a cross section of a NW exhibits the topological singularity, which indicates the optical vortex. Of importance, the streamlines of Poynting vector of these SPPs exhibit a helical winding along NW, and the azimuthal component of orbital momentum density exists in the nearfield of NW to produce a longitudinal orbital angular momentum (OAM). Two types of standing wave of counter-propagating SPPs of mode 1 and 2 are also studied; they perform as a string of beads or twisted donut depending on whether the handedness of two opposite-direction propagating SPPs is same or opposite. In addition, a SPP of mode 1 propagating along an elongated NR can be generated by means of an end-fire excitation of crossed electric bi-dipole with 90° phase difference. If the criterion of a resonator for a mode-1 standing wave (string of beads) is met, the configuration of a plasmonic NR associated with a pair of bi-dipoles with a phase delay (0° or 180°) at the two ends can be applied as a high-efficiency nanoantenna of transmission. Our results may pave a way to the further study of SPPs of higher-order mode carrying OAM along plasmonic waveguides.
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Rommelfanger NJ, Ou Z, Keck CH, Hong G. Differential heating of metal nanostructures at radio frequencies. PHYSICAL REVIEW APPLIED 2021; 15:054007. [PMID: 36268260 PMCID: PMC9581340 DOI: 10.1103/physrevapplied.15.054007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Nanoparticles with strong absorption of incident radio frequency (RF) or microwave irradiation are desirable for remote hyperthermia treatments. While controversy has surrounded the absorption properties of spherical metallic nanoparticles, other geometries such as prolate and oblate spheroids have not received sufficient attention for application in hyperthermia therapies. Here, we use the electrostatic approximation to calculate the relative absorption ratio of metallic nanoparticles in various biological tissues. We consider a broad parameter space, sweeping across frequencies from 1 MHz to 10 GHz, while also tuning the nanoparticle dimensions from spheres to high-aspect-ratio spheroids approximating nanowires and nanodiscs. We find that while spherical metallic nanoparticles do not offer differential heating in tissue, large absorption cross sections can be obtained from long prolate spheroids, while thin oblate spheroids offer minor potential for absorption. Our results suggest that metallic nanowires should be considered for RF- and microwave-based wireless hyperthermia treatments in many tissues going forward.
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Affiliation(s)
- Nicholas J. Rommelfanger
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
- Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, 94305, USA
| | - Zihao Ou
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
- Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, 94305, USA
| | - Carl H.C. Keck
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
- Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, 94305, USA
| | - Guosong Hong
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
- Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, 94305, USA
- Corresponding author:
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6
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Terracciano R, Zhang A, Butler EB, Demarchi D, Hafner JH, Grattoni A, Filgueira CS. Effects of Surface Protein Adsorption on the Distribution and Retention of Intratumorally Administered Gold Nanoparticles. Pharmaceutics 2021; 13:216. [PMID: 33562434 PMCID: PMC7914653 DOI: 10.3390/pharmaceutics13020216] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 11/17/2022] Open
Abstract
The heterogeneous distribution of delivery or treatment modalities within the tumor mass is a crucial limiting factor for a vast range of theranostic applications. Understanding the interactions between a nanomaterial and the tumor microenvironment will help to overcome challenges associated with tumor heterogeneity, as well as the clinical translation of nanotheranostic materials. This study aims to evaluate the influence of protein surface adsorption on gold nanoparticle (GNP) biodistribution using high-resolution computed tomography (CT) preclinical imaging in C57BL/6 mice harboring Lewis lung carcinoma (LLC) tumors. LLC provides a valuable model for study due to its highly heterogenous nature, which makes drug delivery to the tumor challenging. By controlling the adsorption of proteins on the GNP surface, we hypothesize that we can influence the intratumoral distribution pattern and particle retention. We performed an in vitro study to evaluate the uptake of GNPs by LLC cells and an in vivo study to assess and quantify the GNP biodistribution by injecting concentrated GNPs citrate-stabilized or passivated with bovine serum albumin (BSA) intratumorally into LLC solid tumors. Quantitative CT and inductively coupled plasma optical emission spectrometry (ICP-OES) results both confirm the presence of particles in the tumor 9 days post-injection (n = 8 mice/group). A significant difference is highlighted between citrate-GNP and BSA-GNP groups (** p < 0.005, Tukey's multiple comparisons test), confirming that the protein corona of GNPs modifies intratumoral distribution and retention of the particles. In conclusion, our investigations show that the surface passivation of GNPs influences the mechanism of cellular uptake and intratumoral distribution in vivo, highlighting the spatial heterogeneity of the solid tumor.
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Affiliation(s)
- Rossana Terracciano
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; (R.T.); (A.G.)
- Department of Electronics, Politecnico di Torino, 10129 Torino, Italy;
| | - Aobo Zhang
- Department of Physics & Astronomy, Rice University, Houston, TX 77005, USA; (A.Z.); (J.H.H.)
| | - E. Brian Butler
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA;
| | - Danilo Demarchi
- Department of Electronics, Politecnico di Torino, 10129 Torino, Italy;
| | - Jason H. Hafner
- Department of Physics & Astronomy, Rice University, Houston, TX 77005, USA; (A.Z.); (J.H.H.)
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Alessandro Grattoni
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; (R.T.); (A.G.)
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX 77030, USA;
- Department of Surgery, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Carly S. Filgueira
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA; (R.T.); (A.G.)
- Department of Cardiovascular Surgery, Houston Methodist Research Institute, Houston, TX 77030, USA
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Linghu S, Gu Z, Lu J, Fang W, Yang Z, Yu H, Li Z, Zhu R, Peng J, Zhan Q, Zhuang S, Gu M, Gu F. Plasmon-driven nanowire actuators for on-chip manipulation. Nat Commun 2021; 12:385. [PMID: 33452266 PMCID: PMC7810692 DOI: 10.1038/s41467-020-20683-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 12/09/2020] [Indexed: 01/28/2023] Open
Abstract
Chemically synthesized metal nanowires are promising building blocks for next-generation photonic integrated circuits, but technological implementation in monolithic integration will be severely hampered by the lack of controllable and precise manipulation approaches, due to the strong adhesion of nanowires to substrates in non-liquid environments. Here, we demonstrate this obstacle can be removed by our proposed earthworm-like peristaltic crawling motion mechanism, based on the synergistic expansion, friction, and contraction in plasmon-driven metal nanowires in non-liquid environments. The evanescently excited surface plasmon greatly enhances the heating effect in metal nanowires, thereby generating surface acoustic waves to drive the nanowires crawling along silica microfibres. Advantages include sub-nanometer positioning accuracy, low actuation power, and self-parallel parking. We further demonstrate on-chip manipulations including transporting, positioning, orientation, and sorting, with on-situ operation, high selectivity, and great versatility. Our work paves the way to realize full co-integration of various functionalized photonic components on single chips. Implementing metal nanowires in photonic circuits is challenging due to lack of suitable manipulation techniques. Here, the authors present an earthworm-like peristaltic crawling motion mechanism, based on surface plasmons and surface acoustic waves, and show on-chip manipulations of single nanowires.
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Affiliation(s)
- Shuangyi Linghu
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Zhaoqi Gu
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Jinsheng Lu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Wei Fang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Zongyin Yang
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Huakang Yu
- School of Physics and Optoelectronics, South China University of Technology, 510641, Guangzhou, China
| | - Zhiyuan Li
- School of Physics and Optoelectronics, South China University of Technology, 510641, Guangzhou, China
| | - Runlin Zhu
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Jian Peng
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Qiwen Zhan
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China.,Department of Electro-Optics and Photonics, University of Dayton, 300 College Park, Dayton, OH, 45469, USA
| | - Songlin Zhuang
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Min Gu
- Centre for Artificial-Intelligence Nanophotonics, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, 200093, Shanghai, China
| | - Fuxing Gu
- Laboratory of Integrated Opto-Mechanics and Electronics, Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, 200093, Shanghai, China.
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8
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Clark BD, Lou M, Nordlander P, Halas NJ. Aluminum Nanocrystals Grow into Distinct Branched Aluminum Nanowire Morphologies. NANO LETTERS 2020; 20:6644-6650. [PMID: 32787155 DOI: 10.1021/acs.nanolett.0c02466] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Plasmonic nanowires (NWs) have generated great interest in their applications in nanophotonics and nanotechnology. Here we report the synthesis of Al nanocrystals (NCs) with controlled morphologies that range from nanospheres to branched NW and NW bundles. This is accomplished by catalyzing the pyrolysis of triisobutyl aluminum (TIBA) with Tebbe's reagent, a titanium(III) catalyst with two cyclopentadienyl ligands. The ratio of TIBA to Tebbe's reagent is critical in determining the morphology of the resulting Al NC. The branched Al NWs grow in their ⟨100⟩ directions and are formed by oriented attachment of isotropic Al NCs on their {100} facets. Branched NWs are strongly absorptive from the UV to the mid-IR, with longitudinal dipolar, higher-order, and transverse plasmons, all contributing to their broadband response. This rapid Al NW synthesis enables the expanded use of Al for plasmonic and nanophotonic applications in the ultraviolet, visible, and infrared regions of the spectrum.
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9
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Mancini A, Gubbin CR, Berté R, Martini F, Politi A, Cortés E, Li Y, De Liberato S, Maier SA. Near-Field Spectroscopy of Cylindrical Phonon-Polariton Antennas. ACS NANO 2020; 14:8508-8517. [PMID: 32530605 DOI: 10.1021/acsnano.0c02784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface phonon polaritons (SPhPs) are hybrid light-matter states in which light strongly couples to lattice vibrations inside the Reststrahlen band of polar dielectrics at mid-infrared frequencies. Antennas supporting localized surface phonon polaritons (LSPhPs) easily outperform their plasmonic counterparts operating in the visible or near-infrared in terms of field enhancement and confinement thanks to the inherently slower phonon-phonon scattering processes governing SPhP decay. In particular, LSPhP antennas have attracted considerable interest for thermal management at the nanoscale, where the emission strongly diverts from the usual far-field blackbody radiation due to the presence of evanescent waves at the surface. However, far-field measurements cannot shed light on the behavior of antennas in the near-field region. To overcome this limitation, we employ scattering-scanning near-field optical microscopy (sSNOM) to unveil the spectral near-field response of 3C-SiC antenna arrays. We present a detailed description of the behavior of the antenna resonances by comparing far-field and near-field spectra and demonstrate the existence of a mode with no net dipole moment, absent in the far-field spectra, but of importance for applications that exploit the heightened electromagnetic near fields. Furthermore, we investigate the perturbation in the antenna response induced by the presence of the AFM tip, which can be further extended toward situations where for example strong IR emitters couple to LSPhP modes.
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Affiliation(s)
- Andrea Mancini
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maxilimians-Universität München, 80539 München, Germany
| | - Christopher R Gubbin
- School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom
| | - Rodrigo Berté
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maxilimians-Universität München, 80539 München, Germany
| | - Francesco Martini
- School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom
- Istituto di Fotonica e Nanotecnologie-CNR, Via Cineto Romano 42, 00156 Roma, Italy
| | - Alberto Politi
- School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom
| | - Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maxilimians-Universität München, 80539 München, Germany
| | - Yi Li
- School of Microelectronics, MOE Engineering Research Center of Integrated Circuits for Next Generation Communications, Southern University of Science and Technology, Shenzhen 518055, China
| | - Simone De Liberato
- School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom
| | - Stefan A Maier
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maxilimians-Universität München, 80539 München, Germany
- Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom
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10
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Li P, Pan D, Yang L, Wei H, He S, Xu H, Li Z. Silver nano-needles: focused optical field induced solution synthesis and application in remote-excitation nanofocusing SERS. NANOSCALE 2019; 11:2153-2161. [PMID: 30402639 DOI: 10.1039/c8nr07141a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tapered metallic nanostructures that harbor surface plasmons are highly interesting for nanophotonic applications because of their waveguiding and field-focusing properties. Here, we developed a focused optical field induced solution synthesis for unique crystallized silver nano-needles. Under the focused laser spot, inhomogeneous Ag monomer concentration is created, which triggers the uniaxial growth of silver nanostructures along the radial direction with decreasing rate, forming nano-needle structures. These nano-needles are several micrometers long, with diameter attenuating from hundreds to tens of nanometers, and terminated by a sharp apex only a few nanometers in diameter. Moreover, nano-needles with atomically smooth surfaces show excellent performance for plasmonic waveguiding and unique near-field compression abilities. This nano-needle structure can be used for effective remote-excitation detection/sensing. We also demonstrate the assembling and picking up of nano-needles, which indicate potential applications in intracellular endoscopy, high resolution scanning tips, on-chip nanophotonic devices, etc.
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Affiliation(s)
- Pan Li
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Center for Condensed Matter Physics, Department of Physics, Capital Normal University, Beijing 100048, P.R. China.
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11
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Wang J, Jiu J, Zhang S, Sugahara T, Nagao S, Suganuma K, He P. The comprehensive effects of visible light irradiation on silver nanowire transparent electrode. NANOTECHNOLOGY 2018; 29:435701. [PMID: 30047924 DOI: 10.1088/1361-6528/aad619] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The silver nanowire (AgNW) transparent electrode is one of the promising components for flexible electronics due to its high electrical and thermal conductivity, optical transparency and flexibility. However, the application of the AgNW electrode with an improved performance is generally limited by its poor long-term stability. As the name suggests, the transparent electrode is usually exposed to visible light in various applications. Unlike other electrode materials, AgNWs show unique and complicated behavior under long-term visible light illumination. In this study, the comprehensive effect of visible light irradiation on the AgNW transparent electrode is initially investigated in detail. Light irradiation induces the migration of silver to enhance the nanowire contacts while also leading to the generation and growth of particles and diameter loss in the nanowire. Light irradiation accelerates the sulfidation and oxidation of the AgNWs as well, resulting in the emergence of degradation products on the nanowire surface. All these effects influence the sheet resistance of the AgNW electrode during light illumination. The light-induced change of sheet resistance also relates to the nanowire concentration due to the sensitivity of the wire-wire contact resistance near the percolation threshold. It is believed that this work will be a valuable reference for the design, processing and application of transparent electrodes used in numerous optoelectronic devices.
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Affiliation(s)
- Jun Wang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, People's Republic of China. The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
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12
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Lu Y, Yang S, Xu J, Liu Z, Wang H, Lin M, Wang Y, Chen H. Twisting Ultrathin Au Nanowires into Double Helices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801925. [PMID: 30063294 DOI: 10.1002/smll.201801925] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/28/2018] [Indexed: 06/08/2023]
Abstract
Previously, double helix nanowire was reported by coating Pd/Pt/Au onto Au-Ag alloy nanowire. Here, straight oleylamine-stabilized ultrathin Au nanowires with single crystalline fcc lattice are surprisingly converted into double helix helices upon reacting with Ag in tetrahydrofuran (THF). The obtained Au-Ag helical nanowires contain lattice distinctively different from the fcc lattice and are different in many aspects with the previous system. The discovery may expand the scope of nanoscale double helix formation and the understanding of lattice transformation among ultrafine nanostructures.
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Affiliation(s)
- Yan Lu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Shenghao Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Jun Xu
- Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Zhenzhong Liu
- Research Institute of Taizhou, Zhejiang University, Taizhou, 318000, P. R. China
| | - Hong Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Ming Lin
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR) Singapore, 117602, Singapore
| | - Yawen Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Hongyu Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
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13
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Cao T, Tian L, Liang H, Qin KR. Reconfigurable, graphene-coated, chalcogenide nanowires with a sub-10-nm enantioselective sorting capability. MICROSYSTEMS & NANOENGINEERING 2018; 4:7. [PMID: 31057897 PMCID: PMC6220155 DOI: 10.1038/s41378-018-0008-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 12/31/2017] [Accepted: 01/22/2018] [Indexed: 06/02/2023]
Abstract
Chiral surface plasmon polaritons (SPPs) produced by plasmonic nanowires can be used to enhance molecular spectroscopy for biosensing applications. Nevertheless, the switchable stereoselectivity and detection of various analytes are limited by a lack of switchable, chiral SPPs. Using both finite-element method simulations and analytic calculations, we present a graphene-coated chalcogenide (GCC) nanowire that produces mid-infrared, chiral SPPs. The chiral SPPs can be reversibly switched between "on" (transparent) and "off" (opaque) by non-volatile structural state transitions in the dielectric constants of the chalcogenide glass Ge2Sb2Te5. Furthermore, by controlling the Fermi energy of the graphene-coating layer, the nanowire can output either non-chiral or chiral SPPs. A thermal-electric model was built to illustrate the possibility of ultrafast on/off switching of the SPPs at the terminus of the nanowire. Finally, we show that a selective, lateral sorting of sub-10-nm enantiomers can be achieved via the GCC nanowire. Chiral nanoparticles with opposite handedness experience transverse forces that differ in both their sign and magnitude. Our design may pave the way for plasmonic nanowire networks and tunable nanophotonic devices, which require the ultrafast switching of SPPs, and provide a possible approach for a compact, enantiopure synthesis.
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Affiliation(s)
- Tun Cao
- Department of Biomedical Engineering, Dalian University of Technology, Dalian, China
| | - Long Tian
- Department of Biomedical Engineering, Dalian University of Technology, Dalian, China
| | - Huawei Liang
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Kai-Rong Qin
- Department of Biomedical Engineering, Dalian University of Technology, Dalian, China
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14
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Vlassov S, Oras S, Antsov M, Butikova J, Lõhmus R, Polyakov B. Low-friction nanojoint prototype. NANOTECHNOLOGY 2018; 29:195707. [PMID: 29469059 DOI: 10.1088/1361-6528/aab163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
High surface energy of individual nanostructures leads to high adhesion and static friction that can completely hinder the operation of nanoscale systems with movable parts. For instance, silver or gold nanowires cannot be moved on silicon substrate without plastic deformation. In this paper, we experimentally demonstrate an operational prototype of a low-friction nanojoint. The movable part of the prototype is made either from a gold or silver nano-pin produced by laser-induced partial melting of silver and gold nanowires resulting in the formation of rounded bulbs on their ends. The nano-pin is then manipulated into the inverted pyramid (i-pyramids) specially etched in a Si wafer. Due to the small contact area, the nano-pin can be repeatedly tilted inside an i-pyramid as a rigid object without noticeable deformation. At the same time in the absence of external force the nanojoint is stable and preserves its position and tilt angle. Experiments are performed inside a scanning electron microscope and are supported by finite element method simulations.
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15
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Lamson TL, Khan S, Wang Z, Zhang YK, Yu Y, Chen ZS, Xu H. Patterned Synthesis of ZnO Nanorod Arrays for Nanoplasmonic Waveguide Applications. OPTICS COMMUNICATIONS 2018; 411:53-58. [PMID: 30140109 PMCID: PMC6101049 DOI: 10.1016/j.optcom.2017.10.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report the patterned synthesis of ZnO nanorod arrays of diameters between 50 nm and 130 nm and various spacings. This was achieved by patterning hole arrays in a polymethyl methacrylate layer with electron beam lithography, followed by chemical synthesis of ZnO nanorods in the patterned holes using the hydrothermal method. The fabrication of ZnO nanorod waveguide arrays is also demonstrated by embedding the nanorods in a silver film using the electroplating process. Optical transmission measurement through the nanorod waveguide arrays is performed and strong resonant transmission of visible light is observed. We have found the resonance shifts to a longer wavelength with increasing nanorod diameter. Furthermore, the resonance wavelength is independent of the nanowaveguide array period, indicating the observed resonant transmission is the effect of a single ZnO nanorod waveguide. These nanorod waveguides may be used in single-molecule imaging and sensing as a result of the nanoscopic profile of the light transmitted through the nanorods and the controlled locations of these nanoscale light sources.
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Affiliation(s)
- Thomas L. Lamson
- Department of Physics, St. John’s University, Jamaica, NY 11439, USA
| | - Sahar Khan
- Department of Physics, St. John’s University, Jamaica, NY 11439, USA
| | - Zhifei Wang
- Department of Biological Sciences, St. John’s University, Jamaica, NY 11439, USA
| | - Yun-Kai Zhang
- Department of Pharmaceutical Sciences, St. John’s University, Jamaica, NY 11439, USA
| | - Yong Yu
- Department of Biological Sciences, St. John’s University, Jamaica, NY 11439, USA
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, St. John’s University, Jamaica, NY 11439, USA
| | - Huizhong Xu
- Department of Physics, St. John’s University, Jamaica, NY 11439, USA
- Department of Physics and Astronomy, San Francisco State University, San Francisco, CA 94132, USA
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16
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Yu S, Liu Z, Wang W, Jin L, Xu W, Wu Y. Disperse magnetic solid phase microextraction and surface enhanced Raman scattering (Dis-MSPME-SERS) for the rapid detection of trace illegally chemicals. Talanta 2018; 178:498-506. [DOI: 10.1016/j.talanta.2017.09.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 09/14/2017] [Accepted: 09/17/2017] [Indexed: 12/25/2022]
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17
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Manipulating Propagation Constants of Silver Nanowire Plasmonic Waveguide Modes Using a Dielectric Multilayer Substrate. APPLIED SCIENCES-BASEL 2018; 8. [PMID: 31588365 PMCID: PMC6777570 DOI: 10.3390/app8010144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Experiments and numerical simulations demonstrate that when a silver nanowire is placed on a dielectric multilayer, but not the commonly used bare glass slide, the effective refractive index of the propagating surface plasmons along the silver nanowire can be controlled. Furthermore, by increasing the thickness of the top dielectric layer, longer wavelength light can also propagate along a very thin silver nanowire. In the experiment, the diameter of the silver nanowire can be as thin as 70 nm, with the incident wavelength as long as 640 nm. The principle of this control is analysed from the existence of a photonic band gap and the Bloch surface wave with this dielectric multilayer substrate.
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18
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Beane G, Yu K, Devkota T, Johns P, Brown B, Wang GP, Hartland G. Surface Plasmon Polariton Interference in Gold Nanoplates. J Phys Chem Lett 2017; 8:4935-4941. [PMID: 28945384 DOI: 10.1021/acs.jpclett.7b02079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Transient absorption microscopy (TAM) measurements have been used to study the optical properties of surface plasmon polariton (SPP) modes in gold nanoplates on a glass substrate. For thin gold nanoplates, the TAM images show an oscillation in the signal across the plate due to interference between the "bound" and "leaky" SPP modes. The wavelength of the interference pattern is given by λ = 2π/Δk, where Δk is the difference between the wavevectors for the bound and leaky modes and is sensitive to the dielectric constant of the material above the gold nanoplate. Back focal plane imaging was also used to measure the wavevector of the leaky mode, which, in combination with the Δk information from the TAM images, enabled the bound mode wavevector to be determined. These experiments represent the first far-field optical measurement of the wavevector for the bound mode in metal nanostructures.
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Affiliation(s)
- Gary Beane
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Kuai Yu
- College of Electronic Science and Technology, Shenzhen University , Shenzhen 518060, People's Republic of China
| | - Tuphan Devkota
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Paul Johns
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Brendan Brown
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Guo Ping Wang
- College of Electronic Science and Technology, Shenzhen University , Shenzhen 518060, People's Republic of China
| | - Gregory Hartland
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
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19
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Lerch S, Reinhard BM. Spectral signatures of charge transfer in assemblies of molecularly-linked plasmonic nanoparticles. INTERNATIONAL JOURNAL OF MODERN PHYSICS. B 2017; 31:1740002. [PMID: 29391660 PMCID: PMC5788194 DOI: 10.1142/s0217979217400021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Self-assembly of functionalized nanoparticles (NPs) provides a unique class of nanomaterials for exploring and utilizing quantum-plasmonic effects that occur if the interparticle separation between NPs approaches a few nanometers and below. We review recent theoretical and experimental studies of plasmon coupling in self-assembled NP structures that contain molecular linkers between the NPs. Charge transfer through the interparticle gap of an NP dimer results in a significant blue-shift of the bonding dipolar plasmon (BDP) mode relative to classical electromagnetic predictions, and gives rise to new coupled plasmon modes, the so-called charge transfer plasmon (CTP) modes. The blue-shift of the plasmon spectrum is accompanied by a weakening of the electromagnetic field in the gap of the NPs. Due to an optical far-field signature that is sensitive to charge transfer across the gap, plasmonic molecules represent a sensor platform for detecting and characterizing gap conductivity in an optical fashion and for characterizing the role of molecules in facilitating the charge transfer across the gap.
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Affiliation(s)
- Sarah Lerch
- Department of Chemistry, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA. The Photonics Center, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA
| | - Björn M Reinhard
- Department of Chemistry, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA. The Photonics Center, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA
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20
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Szalkowski M, Janna Olmos JD, Buczyńska D, Maćkowski S, Kowalska D, Kargul J. Plasmon-induced absorption of blind chlorophylls in photosynthetic proteins assembled on silver nanowires. NANOSCALE 2017; 9:10475-10486. [PMID: 28703814 DOI: 10.1039/c7nr03866f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate that controlled assembly of eukaryotic photosystem I with its associated light harvesting antenna complex (PSI-LHCI) on plasmonically active silver nanowires (AgNWs) substantially improves the optical functionality of such a novel biohybrid nanostructure. By comparing fluorescence intensities measured for PSI-LHCI complex randomly oriented on AgNWs and the results obtained for the PSI-LHCI/cytochrome c553 (cyt c553) bioconjugate with AgNWs we conclude that the specific binding of photosynthetic complexes with defined uniform orientation yields selective excitation of a pool of chlorophyll (Chl) molecules that are otherwise almost non-absorbing. This is remarkable, as this study shows for the first time that plasmonic excitations in metallic nanostructures can not only be used to enhance native absorption of photosynthetic pigments, but also - by employing cyt c553 as the conjugation cofactor - to activate the specific Chl pools as the absorbing sites only when the uniform and well-defined orientation of PSI-LHCI with respect to plasmonic nanostructures is achieved. As absorption of PSI alone is comparatively low, our approach lends itself as an innovative approach to outperform the reported-to-date biohybrid devices with respect to solar energy conversion.
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Affiliation(s)
- Marcin Szalkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Julian David Janna Olmos
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland. and Faculty of Biology, University of Warsaw, ul. Miecznikowa 1, 02-096, Warsaw, Poland
| | - Dorota Buczyńska
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Sebastian Maćkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland. and Baltic Institute of Technology, al. Zwycięstwa 96/98, Gdynia, Poland
| | - Dorota Kowalska
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Joanna Kargul
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland.
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21
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Lacroix JC, Martin P, Lacaze PC. Tailored Surfaces/Assemblies for Molecular Plasmonics and Plasmonic Molecular Electronics. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2017; 10:201-224. [PMID: 28375704 DOI: 10.1146/annurev-anchem-061516-045325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Molecular plasmonics uses and explores molecule-plasmon interactions on metal nanostructures for spectroscopic, nanophotonic, and nanoelectronic devices. This review focuses on tailored surfaces/assemblies for molecular plasmonics and describes active molecular plasmonic devices in which functional molecules and polymers change their structural, electrical, and/or optical properties in response to external stimuli and that can dynamically tune the plasmonic properties. We also explore an emerging research field combining molecular plasmonics and molecular electronics.
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Affiliation(s)
| | - Pascal Martin
- Department of Chemistry, University of Paris Diderot, ITODYS, Paris 75205, France;
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22
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Tharmavaram M, Rawtani D, Pandey G. Fabrication routes for one-dimensional nanostructures via block copolymers. NANO CONVERGENCE 2017; 4:12. [PMID: 28546902 PMCID: PMC5423919 DOI: 10.1186/s40580-017-0106-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
Nanotechnology is the field which deals with fabrication of materials with dimensions in the nanometer range by manipulating atoms and molecules. Various synthesis routes exist for the one, two and three dimensional nanostructures. Recent advancements in nanotechnology have enabled the usage of block copolymers for the synthesis of such nanostructures. Block copolymers are versatile polymers with unique properties and come in many types and shapes. Their properties are highly dependent on the blocks of the copolymers, thus allowing easy tunability of its properties. This review briefly focusses on the use of block copolymers for synthesizing one-dimensional nanostructures especially nanowires, nanorods, nanoribbons and nanofibers. Template based, lithographic, and solution based approaches are common approaches in the synthesis of nanowires, nanorods, nanoribbons, and nanofibers. Synthesis of metal, metal oxides, metal oxalates, polymer, and graphene one dimensional nanostructures using block copolymers have been discussed as well.
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Affiliation(s)
- Maithri Tharmavaram
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 18-A, Near Police Bhavan, Gandhinagar, Gujarat 382007 India
| | - Deepak Rawtani
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 18-A, Near Police Bhavan, Gandhinagar, Gujarat 382007 India
| | - Gaurav Pandey
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 18-A, Near Police Bhavan, Gandhinagar, Gujarat 382007 India
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23
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Jiang K, Zhao D, Guo S, Zhang X, Zhu X, Guo J, Lu G, Huang X. Efficient oxygen reduction catalysis by subnanometer Pt alloy nanowires. SCIENCE ADVANCES 2017; 3:e1601705. [PMID: 28275723 PMCID: PMC5325541 DOI: 10.1126/sciadv.1601705] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 12/28/2016] [Indexed: 05/19/2023]
Abstract
The common knowledge is that Pt and Pt alloy nanoparticles (NPs) less than 2 nm are not desirable for oxygen reduction reaction (ORR). However, whether the same trend is expected in Pt-based nanowires (NWs) and nanoplates remains questionable because there is no scalable approach to make such Pt nanostructures. We report a general approach for preparing subnanometer Pt alloy NWs with a diameter of only 4 to 5 atomic layer thickness, ranging from monometallic Pt NWs to bimetallic PtNi and PtCo NWs and to trimetallic PtNiCo NWs. In a sharp contrast to Pt alloy NPs, the subnanometer Pt alloy NWs demonstrate exceptional mass and specific activities of 4.20 A/mg and 5.11 mA/cm2 at 0.9 V versus reversible hydrogen electrode (RHE), respectively, 32.3 and 26.9 times higher than those of the commercial Pt/C. Density functional theory simulations reveal that the enhanced ORR activities are attributed to the catalytically active sites on high-density (111) facets in the subnanometer Pt alloy NWs. They are also very stable under the ORR condition with negligible activity decay over the course of 30,000 cycles. Our work presents a new approach to maximize Pt catalytic efficiency with atomic level utilization for efficient heterogeneous catalysis and beyond.
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Affiliation(s)
- Kezhu Jiang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
| | - Dandan Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
| | - Shaojun Guo
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
- Beijing Innovation Center for Engineering Science and Advanced Technology, College of Engineering, Peking University, Beijing 100871, China
- Key Laboratory of Theory and Technology of Advanced Batteries Materials, College of Engineering, Peking University, Beijing 100871, China
- Corresponding author. (S.G.); (X.H.)
| | - Xu Zhang
- Department of Physics and Astronomy, California State University, Northridge, Northridge, CA 91330, USA
| | - Xing Zhu
- Testing and Analysis Center, Soochow University, Jiangsu 215123, China
| | - Jun Guo
- Testing and Analysis Center, Soochow University, Jiangsu 215123, China
| | - Gang Lu
- Department of Physics and Astronomy, California State University, Northridge, Northridge, CA 91330, USA
| | - Xiaoqing Huang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China
- Corresponding author. (S.G.); (X.H.)
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24
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Hu H, Pauly M, Felix O, Decher G. Spray-assisted alignment of Layer-by-Layer assembled silver nanowires: a general approach for the preparation of highly anisotropic nano-composite films. NANOSCALE 2017; 9:1307-1314. [PMID: 28059411 DOI: 10.1039/c6nr08045f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The present article focuses on the build-up and the properties of oriented silver nanowire monolayer films and Layer-by-Layer assembled multilayer films. We describe the template-free oriented spray-assisted assembly of silver nanowires at solid/air-interfaces using Grazing Incidence Spraying, a simple and versatile approach that allows the formation of highly oriented thin films with a tunable density and in-plane orientation. Depending on the spraying conditions the nematic order parameter, which describes the angular spread of misaligned nanowires, can be as high as 0.98 (a value of 1.00 corresponding to a perfectly parallel alignment). The combination with the Layer-by-Layer assembly allows building multilayer thin films possessing in-plane anisotropy. In order to demonstrate that the local alignment does not cancel out on the macroscopic scale but leads to direction-dependent properties, we use linearly polarized UV-Vis-NIR spectroscopy to probe the selective excitation of the transverse and longitudinal localized plasmon resonances of the nanowires. The polarization efficiency of the thin films increases strongly with the in-plane density, the degree of orientation, and the number of silver nanowire layers. Multilayer films containing 4 layers of nanowires oriented in the same direction reach a polarization efficiency of up to 97% in the near-infrared region.
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Affiliation(s)
- H Hu
- Institut Charles Sadron, CNRS (UPR22), 23 rue du Loess, F-67034 Strasbourg, France.
| | - M Pauly
- Institut Charles Sadron, CNRS (UPR22), 23 rue du Loess, F-67034 Strasbourg, France. and Faculté de Chimie, Université de Strasbourg, 1 rue Blaise Pascal, F-67008 Strasbourg, France
| | - O Felix
- Institut Charles Sadron, CNRS (UPR22), 23 rue du Loess, F-67034 Strasbourg, France.
| | - G Decher
- Institut Charles Sadron, CNRS (UPR22), 23 rue du Loess, F-67034 Strasbourg, France. and Faculté de Chimie, Université de Strasbourg, 1 rue Blaise Pascal, F-67008 Strasbourg, France and International Center for Frontier Research in Chemistry, 8 allée Gaspard Monge, F-67083 Strasbourg, France and Excellence Cluster "Nanostructures in Interaction with their Environment" (LabEx NIE), 23 rue du Loess, F-67034 Strasbourg, France
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25
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Kuo PC, Chen GY, Chen YN. Scattering of nanowire surface plasmons coupled to quantum dots with azimuthal angle difference. Sci Rep 2016; 6:37766. [PMID: 27892942 PMCID: PMC5125278 DOI: 10.1038/srep37766] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 11/01/2016] [Indexed: 11/25/2022] Open
Abstract
Coherent scatterings of surface plasmons coupled to quantun dots have attracted great attention in plasmonics. Recently, an experiment has shown that the quantum dots located nearby a nanowire can be separated not only in distance, but also an angle ϕ along the cylindrical direction. Here, by using the real-space Hamiltonian and the transfer matrix method, we analytically obtain the transmission/reflection spectra of nanowire surface plasmons coupled to quantum dots with an azimuthal angle difference. We find that the scattering spectra can show completely different features due to different positions and azimuthal angles of the quantum dots. When additionally coupling a cavity to the dots, we obtain the Fano-like line shape in the transmission and reflection spectra due to the interference between the localized and delocalized modes.
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Affiliation(s)
- Po-Chen Kuo
- Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan
| | - Guang-Yin Chen
- Department of Physics, National Chung Hsing University, Taichung 402, Taiwan
| | - Yueh-Nan Chen
- Department of Physics, National Cheng-Kung University, Tainan 701, Taiwan.,Physics Division, National Center for Theoretical Sciences, Hsinchu, Taiwan
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26
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Wu F, Wang W, Hua J, Xu Z, Li F. Control on Surface Plasmon Polaritons Propagation Properties by Continuously Moving a Nanoparticle along a Silver Nanowire Waveguide. Sci Rep 2016; 6:37512. [PMID: 27874049 PMCID: PMC5118742 DOI: 10.1038/srep37512] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/27/2016] [Indexed: 11/09/2022] Open
Abstract
Surface plasmon polaritons (SPPs)-based nanowire waveguides possess potential applications for nanophotonic circuits. Precise control on the propagation of SPPs in metal nanowires is thus of significant importance. In this work, we report the control on SPPs propagation properties by moving a silver nanoparticle (Ag NP) along a silver nanowire (Ag NW). The emission intensity at NP can be attenuated to about 25% of the maximum emission value with increasing the distance between excitation end and NP. When NP is gradually moved away from excitation end, the intensity of emission light at Ag NP shows an exponential decay with a superposition of wavy appearance, while the emission at NW end is almost a constant value. It is found that the former is related to the local SPPs field distribution in NW, and the latter is dependent on the distance between excitation end and NW terminal. Moreover, the propagation loss in Ag NP-NW structure has been investigated. Our experiments demonstrate the important role of NP location in NW-based waveguides and provide an effective method of tuning scattering light in NW, which is instructive to design the future specialized function of SPPs-based nanophotonic circuits and devices.
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Affiliation(s)
- Fan Wu
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Wenhui Wang
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiaojiao Hua
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zhongfeng Xu
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Fuli Li
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
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27
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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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28
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Pérez-Page M, Yu E, Li J, Rahman M, Dryden DM, Vidu R, Stroeve P. Template-based syntheses for shape controlled nanostructures. Adv Colloid Interface Sci 2016; 234:51-79. [PMID: 27154387 DOI: 10.1016/j.cis.2016.04.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 11/28/2022]
Abstract
A variety of nanostructured materials are produced through template-based synthesis methods, including zero-dimensional, one-dimensional, and two-dimensional structures. These span different forms such as nanoparticles, nanowires, nanotubes, nanoflakes, and nanosheets. Many physical characteristics of these materials such as the shape and size can be finely controlled through template selection and as a result, their properties as well. Reviewed here are several examples of these nanomaterials, with emphasis specifically on the templates and synthesis routes used to produce the final nanostructures. In the first section, the templates have been discussed while in the second section, their corresponding synthesis methods have been briefly reviewed, and lastly in the third section, applications of the materials themselves are highlighted. Some examples of the templates frequently encountered are organic structure directing agents, surfactants, polymers, carbon frameworks, colloidal sol-gels, inorganic frameworks, and nanoporous membranes. Synthesis methods that adopt these templates include emulsion-based routes and template-filling approaches, such as self-assembly, electrodeposition, electroless deposition, vapor deposition, and other methods including layer-by-layer and lithography. Template-based synthesized nanomaterials are frequently encountered in select fields such as solar energy, thermoelectric materials, catalysis, biomedical applications, and magnetowetting of surfaces.
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Affiliation(s)
- María Pérez-Page
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Erick Yu
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States; Department of Materials Science and Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Jun Li
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Masoud Rahman
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Daniel M Dryden
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States; Department of Materials Science and Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Ruxandra Vidu
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States; Department of Materials Science and Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Pieter Stroeve
- Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States.
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29
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Armao JJ, Rabu P, Moulin E, Giuseppone N. Long-Range Energy Transport via Plasmonic Propagation in a Supramolecular Organic Waveguide. NANO LETTERS 2016; 16:2800-2805. [PMID: 26985699 DOI: 10.1021/acs.nanolett.6b00581] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Energy transport in organic materials is dependent on the coherent migration of optically induced excited states. For instance, in active organic waveguides, the tight packing of dye molecules allows delocalization of excitons over a distance generally limited to at most several hundred nanometers. Here, we demonstrate an alternative mechanism of energy transport in a triarylamine-based supramolecular organic waveguide that is plasmonic in nature and results in coherent energy propagation superior to 10 μm. The optical, electric, and magnetic properties of the doped material support the presence of metallic electrons that couple with and transport incident light. These results show that organic metals constitute a novel class of materials with efficient energy transport and are of potential interest for optoelectronics, plasmonics, and artificial light-energy harvesting systems.
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Affiliation(s)
- Joseph J Armao
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS , 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Pierre Rabu
- Institut de Physique et Chimie des Matériaux de Strasbourg, University of Strasbourg, CNRS , 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS , 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Nicolas Giuseppone
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS , 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
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30
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Johns P, Yu K, Devadas MS, Hartland GV. Role of Resonances in the Transmission of Surface Plasmon Polaritons between Nanostructures. ACS NANO 2016; 10:3375-3381. [PMID: 26866536 DOI: 10.1021/acsnano.5b07185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Understanding how surface plasmon polaritons (SPPs) propagate in metal nanostructures is important for the development of plasmonic devices. In this paper, we study the transmission of SPPs between single-crystal gold nanobars on a glass substrate using transient absorption microscopy. The coupled structures were produced by creating gaps in single nanobars by focused ion beam milling. SPPs were launched by focusing the pump laser at the end of the nanobar, and the transmission across the gaps was imaged by scanning the probe laser over the nanostructure. The results show larger losses at small gap sizes. Finite element method calculations were used to investigate this effect. The calculations show two main modes for nanobars on a glass surface: a leaky mode localized at the air-gold interface, and a bound mode localized at the glass-gold interface. At specific gap sizes (approximately 50 nm for our system), these SPP modes can excite localized surface plasmon modes associated with the gap, which dissipate energy. This increases the energy losses at small gap sizes. Experiments and simulations were also performed for the nanobars in microscope immersion oil, which creates a more homogeneous optical environment, and consistent results were observed.
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Affiliation(s)
- Paul Johns
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Kuai Yu
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Mary Sajini Devadas
- Department of Chemistry, Towson University , Towson, Maryland 21252, United States
| | - Gregory V Hartland
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
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31
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Sekar S, Lemaire V, Hu H, Decher G, Pauly M. Anisotropic optical and conductive properties of oriented 1D-nanoparticle thin films made by spray-assisted self-assembly. Faraday Discuss 2016; 191:373-389. [DOI: 10.1039/c6fd00017g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the fabrication of oriented anisotropic metal nanoparticle thin films made by Grazing Incidence Spraying (GIS) and on the anisotropic plasmonic properties of the resulting thin films. Gold nanorods of two different aspect ratios and silver nanowires were self-assembled as a uniaxially aligned monolayer with the GIS approach. In particular, we examine the influence of the nanowire/nanorod length and diameter on the degree of ordering determined by electron microscopy pictures. Furthermore, we show that the anisotropy of the optical properties (probed by polarized UV-visible-near infrared spectroscopy) strongly depend on the quality of alignment. The prepared monolayer thin films have an orientation order parameter of up to 0.83 for silver nanowires, which is reflected in an optical anisotropy of 0.57 in the UV-visible and 0.76 in the near infrared through the selective excitation of transverse and longitudinal surface plasmon resonance modes. The electronic transport in oriented silver nanowire monolayers is also shown to be highly directional, with the sheet resistance varying over almost an order of magnitude depending on the transport direction. Such anisotropic conductive plasmonic thin films may find applications in various fields like biochemical sensing, energy transport and harvesting or optoelectronic devices.
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Affiliation(s)
- S. Sekar
- Institut Charles Sadron
- CNRS (UPR22)
- F-67034 Strasbourg
- France
- Faculté de Chimie
| | - V. Lemaire
- Institut Charles Sadron
- CNRS (UPR22)
- F-67034 Strasbourg
- France
- Faculté de Chimie
| | - H. Hu
- Institut Charles Sadron
- CNRS (UPR22)
- F-67034 Strasbourg
- France
- Faculté de Chimie
| | - G. Decher
- Institut Charles Sadron
- CNRS (UPR22)
- F-67034 Strasbourg
- France
- Faculté de Chimie
| | - M. Pauly
- Institut Charles Sadron
- CNRS (UPR22)
- F-67034 Strasbourg
- France
- Faculté de Chimie
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32
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Jana J, Ganguly M, Pal T. Enlightening surface plasmon resonance effect of metal nanoparticles for practical spectroscopic application. RSC Adv 2016. [DOI: 10.1039/c6ra14173k] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Pictorial depiction of applications of metal nanoparticles in different fields enlightening surface plasmon resonance effect.
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Affiliation(s)
- Jayasmita Jana
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | | | - Tarasankar Pal
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
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33
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Yuan H, Lu Y, Wang Z, Ren Z, Wang Y, Zhang S, Zhang X, Chen J. Single nanoporous gold nanowire as a tunable one-dimensional platform for plasmon-enhanced fluorescence. Chem Commun (Camb) 2016; 52:1808-11. [DOI: 10.1039/c5cc08149a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Up to ∼62-fold enhancement of fluorescence can be obtained on individual nanoporous Au nanowires, ∼8-fold higher than that of smooth Au nanowires.
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Affiliation(s)
- Hang Yuan
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
| | - Yuexiang Lu
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
| | - Zhe Wang
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
| | - Zhonghua Ren
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
| | - Yulan Wang
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
| | - Sichun Zhang
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Xinrong Zhang
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Beijing Key Lab of Radioactive Waste Treatment
- Tsinghua University
- Beijing 100084
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34
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Pan L, Huang Y, Yang Y, Xiong W, Chen G, Su X, Wei H, Wang S, Wen W. Electromagnetic field redistribution induced selective plasmon driven surface catalysis in metal nanowire-film systems. Sci Rep 2015; 5:17223. [PMID: 26601698 PMCID: PMC4658649 DOI: 10.1038/srep17223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 10/27/2015] [Indexed: 12/05/2022] Open
Abstract
For the novel interpretation of Raman spectrum from molecule at metal surface, the plasmon driven surface catalysis (PDSC) reactions have become an interesting topic in the research field of surface enhanced Raman scattering (SERS). In this work, the selective PDSC reactions of p,p’-dimercaptoazobenzene (DMAB) produced from para-aminothiophenol (PATP) or 4-nitrobenzenethiol (4NBT) were demonstrated in the Ag nanowires dimer-Au film systems. The different SERS spectra collected at individual part and adjacent part of the same nanowire-film system pointed out the importance of the electromagnetic field redistribution induced by image charge on film in this selective surface catalysis, which was confirmed by the simulated electromagnetic simulated electro- magnetic field distributions. Our result indicated this electromagnetic field redistribution induced selective surface catalysis was largely affected by the polarization and wavelength of incident light but slightly by the difference in diameters between two nanowires. Our work provides a further understanding of PDSC reaction in metal nanostructure and could be a deep support for the researches on surface catalysis and surface analysis.
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Affiliation(s)
- Liang Pan
- Soft Matter and Interdisciplinary Research Center, College of Physics, Chongqing University, Chongqing, 400044, P. R. China
| | - Yingzhou Huang
- Soft Matter and Interdisciplinary Research Center, College of Physics, Chongqing University, Chongqing, 400044, P. R. China
| | - Yanna Yang
- Soft Matter and Interdisciplinary Research Center, College of Physics, Chongqing University, Chongqing, 400044, P. R. China
| | - Wen Xiong
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044, P.R. China
| | - Guo Chen
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044, P.R. China
| | - Xun Su
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044, P.R. China
| | - Hua Wei
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044, P.R. China
| | - Shuxia Wang
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044, P.R. China
| | - Weijia Wen
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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35
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Yang X, Fu S, Ren G, Chai F, Qu F. Facile Preparation of 2,6-Pyridinedicarboxylic Acid Protected Gold Nanoparticles with Sensitive Chromium-Ion Sensing and Efficient Catalysis. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500796] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Devadas MS, Devkota T, Johns P, Li Z, Lo SS, Yu K, Huang L, Hartland GV. Imaging nano-objects by linear and nonlinear optical absorption microscopies. NANOTECHNOLOGY 2015; 26:354001. [PMID: 26266335 DOI: 10.1088/0957-4484/26/35/354001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Absorption based microscopy measurements are emerging as important tools for studying nanomaterials. This review discusses the three most common techniques for performing these experiments: transient absorption microscopy, photothermal heterodyne imaging, and spatial modulation spectroscopy. The focus is on the application of these techniques to imaging and detection, using examples taken from the authors' laboratory. The advantages and disadvantages of the three methods are discussed, with an emphasis on the unique information that can be obtained from these experiments, in comparison to conventional emission or scattering based microscopy experiments.
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Affiliation(s)
- Mary Sajini Devadas
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA
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37
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Trivedi DJ, Prezhdo OV. Decoherence Allows Model Reduction in Nonadiabatic Dynamics Simulations. J Phys Chem A 2015. [PMID: 26221974 DOI: 10.1021/acs.jpca.5b05869] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A nonadiabatic (NA) molecular dynamics (MD) simulation requires calculation of NA coupling matrix elements, the number of which scales as a square of the number of basis states. The basis size can be huge in studies of nanoscale materials, and calculation of the NA couplings can present a significant bottleneck. A quantum-classical approximation, NAMD overestimates coherence in the quantum, electronic subsystem, requiring decoherence correction. Generally, decoherence times decrease with increasing energy separation between pairs of states forming coherent superpositions. Since rapid decoherence stops quantum dynamics, one expects that decoherence-corrected NAMD can eliminate the need for calculation of NA couplings between energetically distant states, notably reducing the computational cost. Considering several types of dynamics in a semiconductor quantum dot, we demonstrate that indeed, decoherence allows one to reduce the number of needed NA coupling matrix elements. If the energy levels are spaced closer than 0.1 eV, one obtains good results while including only three nearest-neighbor couplings, and in some cases even with just the first nearest-neighbor coupling scheme. If the energy levels are spaced by about 0.4 eV, the nearest-neighbor model fails, while three or more nearest-neighbor schemes also provide good results. In comparison, the results of NAMD simulation without decoherence vary continuously with changes in the number of NA couplings. Thus, decoherence effects induced by coupling to a quantum-mechanical environment not only provide the physical mechanism for NAMD trajectory branding and improve the accuracy of NAMD simulations, but also afford significant computational savings.
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Affiliation(s)
- Dhara J Trivedi
- †Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, United States
| | - Oleg V Prezhdo
- ‡Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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38
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Ray PC, Fan Z, Crouch RA, Sinha SS, Pramanik A. Nanoscopic optical rulers beyond the FRET distance limit: fundamentals and applications. Chem Soc Rev 2015; 43:6370-404. [PMID: 24902784 DOI: 10.1039/c3cs60476d] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In the last few decades, Förster resonance energy transfer (FRET) based spectroscopy rulers have served as a key tool for the understanding of chemical and biochemical processes, even at the single molecule level. Since the FRET process originates from dipole-dipole interactions, the length scale of a FRET ruler is limited to a maximum of 10 nm. Recently, scientists have reported a nanomaterial based long-range optical ruler, where one can overcome the FRET optical ruler distance dependence limit, and which can be very useful for monitoring biological processes that occur across a greater distance than the 10 nm scale. Advancement of nanoscopic long range optical rulers in the last ten years indicate that, in addition to their long-range capability, their brightness, long lifetime, lack of blinking, and chemical stability make nanoparticle based rulers a good choice for long range optical probes. The current review discusses the basic concepts and unique light-focusing properties of plasmonic nanoparticles which are useful in the development of long range one dimensional to three dimensional optical rulers. In addition, to provide the readers with an overview of the exciting opportunities within this field, this review discusses the applications of long range rulers for monitoring biological and chemical processes. At the end, we conclude by speculating on the role of long range optical rulers in future scientific research and discuss possible problems, outlooks and future needs in the use of optical rulers for technological applications.
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Affiliation(s)
- Paresh Chandra Ray
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS, USA.
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39
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Zhang Z, Deckert-Gaudig T, Deckert V. Label-free monitoring of plasmonic catalysis on the nanoscale. Analyst 2015; 140:4325-35. [PMID: 26000344 DOI: 10.1039/c5an00630a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Plasmonics is the description of specific light matter interactions of metallic structures. In general the size of such structures is well in the nanometer regime and also determines such specific characteristics as color, field confinement etc. Plasmon-induced hot electrons play a vital role in so-called plasmonic catalysis, a field that has recently attracted attention as a new reaction platform. Current reports introduce such nanoscale catalysis as an effective approach to concentrate the energy of visible light and direct it to adsorbed molecules, thereby increasing the chemical reaction rate, and controlling the reaction selectivity. In this review, we present various plasmon-catalyzed reactions specifically monitored with Raman spectroscopy, namely surface-enhanced Raman scattering (SERS), remote SERS (Re-SERS) and tip-enhanced Raman scattering (TERS). These techniques utilize the signal enhancing effect of the metal nanoparticles. However, at the same time they can be used to control the actual reactivity. In the first part, the mechanism of plasmonic catalysis is introduced. Then it is shown how catalytic reactions can be spectroscopically investigated far beyond the diffraction limit using TERS. Finally, the sensitivity of the methods is discussed.
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Affiliation(s)
- Zhenglong Zhang
- Leibniz Institute of Photonic Technology - IPHT, Albert-Einstein-Str. 9, 07745 Jena, Germany.
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40
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Li YJ, Xiong X, Zou CL, Ren XF, Zhao YS. One-Dimensional Dielectric/Metallic Hybrid Materials for Photonic Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3728-3743. [PMID: 25963844 DOI: 10.1002/smll.201500199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/08/2015] [Indexed: 06/04/2023]
Abstract
Explorations of 1D nanostructures have led to great progress in the area of nanophotonics in the past decades. Based on either dielectric or metallic materials, a variety of 1D photonic devices have been developed, such as nanolasers, waveguides, optical switches, and routers. What's interesting is that these dielectric systems enjoy low propagation losses and usually possess active optical performance, but they have a diffraction-limited field confinement. Alternatively, metallic systems can guide light on deep subwavelength scales, but they suffer from high metallic absorption and can work as passive devices only. Thus, the idea to construct a hybrid system that combines the merits of both dielectric and metallic materials was proposed. To date, unprecedented optical properties have been achieved in various 1D hybrid systems, which manifest great potential for functional nanophotonic devices. Here, the focus is on recent advances in 1D dielectric/metallic hybrid systems, with a special emphasis on novel structure design, rational fabrication techniques, unique performance, as well as their wide application in photonic components. Gaining a better understanding of hybrid systems would benefit the design of nanophotonic components aimed at optical information processing.
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Affiliation(s)
- Yong Jun Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Xiao Xiong
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Chang-Ling Zou
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Xi Feng Ren
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Yong Sheng Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, PR China
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41
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Bell AP, Fairfield JA, McCarthy EK, Mills S, Boland JJ, Baffou G, McCloskey D. Quantitative study of the photothermal properties of metallic nanowire networks. ACS NANO 2015; 9:5551-8. [PMID: 25938797 DOI: 10.1021/acsnano.5b01673] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In this article, we present a comprehensive investigation of the photothermal properties of plasmonic nanowire networks. We measure the local steady-state temperature increase, heat source density, and absorption in Ag, Au, and Ni metallic nanowire networks under optical illumination. This allows direct experimental confirmation of increased heat generation at the junction between two metallic nanowires and stacking-dependent absorption of polarized light. Due to thermal collective effects, the local temperature distribution in a network is shown to be completely delocalized on a micrometer scale, despite the nanoscale features in the heat source density. Comparison of the experimental temperature profile with numerical simulation allows an upper limit for the effective thermal conductivity of a Ag nanowire network to be established at 43 Wm(-1) K(-1) (0.1 κbulk).
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Affiliation(s)
| | | | | | | | | | - Guillaume Baffou
- ∥Institut Fresnel, UMR 7249, CNRS, Aix Marseille Université, Centrale Marseille, 13013 Marseille, France
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42
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Wu J, Weng LT, Qin W, Liang G, Tang BZ. Crystallization-Induced Redox-Active Nanoribbons of Organometallic Polymers. ACS Macro Lett 2015; 4:593-597. [PMID: 35596298 DOI: 10.1021/acsmacrolett.5b00180] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polymer/inorganic functional nanostructures are essential for the fabrication of high-performance nanodevices in the future. The synthesis of hybrid nanostructures is hindered by complicated synthetic protocols or harsh conditions. Herein, we report a facile and scalable method for the synthesis of organometallic polymer nanoribbons through crystallization of polymers capped with a ferrate complex. Nanoribbons consisted of a single crystalline polymer lamella coated with a redox-active ferrate complex on both sides. The nanoribbons had a width of approximately 70 nm and a thickness of 10 nm. With the merit of highly ordered crystalline structures of polymers and functional coating layers, as well as a highly anisotropic nature, the nanoribbons are useful in nanodevices and biosensors.
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Affiliation(s)
- Jialong Wu
- DSAP,
PCFM and GDHPPC lab, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Lu-Tao Weng
- Materials
Characterization and Preparation Facility, Department of Chemical
and Biomolecular Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Wei Qin
- HKUST-Shenzhen Research
Institute, No. 9 Yuexing first RD,
South Area, Hi-tech Park, Nanshan, Shenzhen, China 518057
| | - Guodong Liang
- DSAP,
PCFM and GDHPPC lab, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research
Institute, No. 9 Yuexing first RD,
South Area, Hi-tech Park, Nanshan, Shenzhen, China 518057
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43
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Hakonen A, Andersson PO, Stenbæk Schmidt M, Rindzevicius T, Käll M. Explosive and chemical threat detection by surface-enhanced Raman scattering: a review. Anal Chim Acta 2015; 893:1-13. [PMID: 26398417 DOI: 10.1016/j.aca.2015.04.010] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/16/2015] [Accepted: 04/03/2015] [Indexed: 01/18/2023]
Abstract
Acts of terror and warfare threats are challenging tasks for defense agencies around the world and of growing importance to security conscious policy makers and the general public. Explosives and chemical warfare agents are two of the major concerns in this context, as illustrated by the recent Boston Marathon bombing and nerve gas attacks on civilians in the Middle East. To prevent such tragic disasters, security personnel must be able to find, identify and deactivate the threats at multiple locations and levels. This involves major technical and practical challenges, such as detection of ultra-low quantities of hazardous compounds at remote locations for anti-terror purposes and monitoring of environmental sanitation of dumped or left behind toxic substances and explosives. Surface-enhanced Raman scattering (SERS) is one of todays most interesting and rapidly developing methods for label-free ultrasensitive vibrational "fingerprinting" of a variety of molecular compounds. Performance highlights include attomolar detection of TNT and DNT explosives, a sensitivity that few, if any, other technique can compete with. Moreover, instrumentation needed for SERS analysis are becoming progressively better, smaller and cheaper, and can today be acquired for a retail price close to 10,000 US$. This contribution aims to give a comprehensive overview of SERS as a technique for detection of explosives and chemical threats. We discuss the prospects of SERS becoming a major tool for convenient in-situ threat identification and we summarize existing SERS detection methods and substrates with particular focus on ultra-sensitive real-time detection. General concepts, detection capabilities and perspectives are discussed in order to guide potential users of the technique for homeland security and anti-warfare purposes.
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Affiliation(s)
- Aron Hakonen
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.
| | - Per Ola Andersson
- Swedish Defense Research Agency FOI, Division of CBRN Defence & Security, SE-90182 Umeå, Sweden
| | - Michael Stenbæk Schmidt
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Tomas Rindzevicius
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Mikael Käll
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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44
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Wood M, Zhang B. Bipolar electrochemical method for dynamic in situ control of single metal nanowire growth. ACS NANO 2015; 9:2454-64. [PMID: 25695464 DOI: 10.1021/acsnano.5b00139] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fabrication plays a key role in determining the unique electrical, optical, and catalytic properties of metal nanowires. Here we present a bipolar electrochemical method for dynamically monitoring and controlling the rate of single metal nanowire growth in situ without a direct electrical connection. Solutions of a metal precursor and a reducing agent are placed on either side of a silica nanochannel, and a pair of electrodes is used to apply a tunable electric potential across the channel. Metal nanowire growth is initiated by chemical reduction when the two solutions meet and continues until the nanochannel is blocked by the formation of a short metal wire segment. Further growth is driven by a bipolar electrochemical mechanism which enables the reduction of metal precursor ions at one end of the nanowire and the oxidation of the reducing agent at the other. The growth rate is monitored in real time by simultaneously recording both the faradaic current and optical microscope video and can be adjusted accordingly by changing the applied electric potential. The resulting nanowire is solid, electrically insulated, and can be used as a bipolar nanoelectrode. This technique can be extended to other electrochemical systems, as well, and provides a confined reaction space for studying the dynamics of any process that can be optically or electrically monitored.
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Affiliation(s)
- Marissa Wood
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Bo Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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45
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Singh D, Dasgupta A, Aswathy VG, Tripathi RPN, Pavan Kumar GV. Directional out-coupling of light from a plasmonic nanowire-nanoparticle junction. OPTICS LETTERS 2015; 40:1006-1009. [PMID: 25768168 DOI: 10.1364/ol.40.001006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We experimentally show how a single Ag nanoparticle (NP) coupled to an Ag nanowire (NW) can convert propagating surface plasmon polaritons to directional photons. By employing dual-excitation Fourier microscopy with spatially filtered collection-optics, we show single- and dual-directional out-coupling of light from NW-NP junction for plasmons excited through glass-substrate and air-superstrate. Furthermore, we show NW-NP junction can influence the directionality of molecular-fluorescence emission, thus functioning as an optical antenna. The results discussed herein may have implications in realizing directional single-photon sources and quantum plasmon circuitry.
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Anisotropic Gold Nanoparticles: Preparation, Properties, and Applications. ANISOTROPIC NANOMATERIALS 2015. [DOI: 10.1007/978-3-319-18293-3_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Liao J, Blok S, van der Molen SJ, Diefenbach S, Holleitner AW, Schönenberger C, Vladyka A, Calame M. Ordered nanoparticle arrays interconnected by molecular linkers: electronic and optoelectronic properties. Chem Soc Rev 2015; 44:999-1014. [DOI: 10.1039/c4cs00225c] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Arrays of metal nanoparticles in an organic matrix have attracted a lot of interest due to their diverse electronic and optoelectronic properties.
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Affiliation(s)
- Jianhui Liao
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Sander Blok
- Leiden Institute of Physics
- Universiteit Leiden
- 2333 CA Leiden
- Netherlands
| | | | - Sandra Diefenbach
- Walter Schottky Institut and Physik-Department
- Technische Universtität München
- 85748 Garching
- Germany
- Nanosystems Initiative Munich (NIM)
| | - Alexander W. Holleitner
- Walter Schottky Institut and Physik-Department
- Technische Universtität München
- 85748 Garching
- Germany
- Nanosystems Initiative Munich (NIM)
| | | | - Anton Vladyka
- Department of Physics
- Universität Basel
- 4056 Basel
- Switzerland
| | - Michel Calame
- Department of Physics
- Universität Basel
- 4056 Basel
- Switzerland
- Swiss Nanoscience Institute
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Li Y, Yan Y, Li Y, Zhang H, Li D, Yang D. Size-controlled synthesis of Pd nanosheets for tunable plasmonic properties. CrystEngComm 2015. [DOI: 10.1039/c4ce02062f] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pd nanosheets with controlled edge length were simply synthesized and exhibited tunable localized surface plasmon resonance properties.
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Affiliation(s)
- Yi Li
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
| | - Yucong Yan
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
| | - Yuheng Li
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
| | - Hui Zhang
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
| | - Dongsheng Li
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
| | - Deren Yang
- State Key Lab of Silicon Materials
- Department of Materials Science and Engineering
- and Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou, PR China
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Yang X, Bao D, Li B. Light transfer from quantum-dot-doped polymer nanowires to silver nanowires. RSC Adv 2015. [DOI: 10.1039/c5ra11566c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The plasmons of two silver nanowires are simultaneously excited by photoluminescence of the quantum-dot-doped nanowire under 532 nm laser excitation.
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Affiliation(s)
- Xianguang Yang
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Physics and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Dinghua Bao
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Physics and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Baojun Li
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Physics and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
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Johns P, Yu K, Devadas MS, Li Z, Major TA, Hartland GV. Effect of substrate discontinuities on the propagating surface plasmon polariton modes in gold nanobars. NANOSCALE 2014; 6:14289-14296. [PMID: 25321926 DOI: 10.1039/c4nr04131c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The surface plasmon polariton (SPP) modes of gold nanobars (nanowires with rectangular dimensions) have been investigated by scanning pump-probe microscopy. In these experiments the nanobars were suspended over trenches cut in glass coverslips, and propagating SPP modes were launched in the supported portion of the nanobar by focusing a near-IR pump laser beam at the end of the nanobar. Transient absorption images were then collected by scanning the probe laser over the nanobar using a galvo-mirror system. The images show that the trench has a large effect on the SPP modes, specifically, for approximately half the nanowires the propagation length is significantly reduced after the trench. Finite element calculations were performed to understand this effect. The calculations show that the pump laser excites bound and leaky modes (modes that have their fields localized at the nanobar/glass or nanobar/air interfaces, respectively) in the supported portions of the nanobars. These modes propagate along the nanobar. When they meet the trench their field distributions are altered. The modes that derive from the bound mode are strongly damped over the trench. Thus, the bound mode is not reconstituted on the opposite side of the trench, and only the leaky mode contributes to the signal. Because the bound and leaky modes can have different propagation lengths, the propagation lengths measured in our experiments can change from one side of the trench to the other. The results show how the substrate can be engineered to control the SPP modes in metal nanostructures.
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Affiliation(s)
- Paul Johns
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA.
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