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Hou S, Wang J, Wang C, Yuan Y, Zhang X, Huang Y, Yan S. Sandwich optoplasmonic hybrid structure for surface enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120252. [PMID: 34411768 DOI: 10.1016/j.saa.2021.120252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/20/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Combined with photonic microstructure and plasmonic nanostructure, the optoplasmonic hybrid structure with fantastic optical properties attracts lots of attentions in recent years. With the help of light enrichment by dielectric photonic microenvironment, the embedded plasmonic nanoantennas generate much greater electromagnetic field enhancement at surface for light harvesting compared to conventional plasmonic nanostructures. In this work, a sandwich optoplasmonic hybrid structure is developed for surface enhanced Raman spectroscopy (SERS) detection, which is consisted of polymethyl methacrylate (PMMA) microspheres array, self-assembled Ag nanoparticles (AgNPs) film and SiO2 microsphere (PMMA@AgNPs@SiO2). The SERS spectra collected on this optoplasmonic substrate point out it has high sensitivity with limit of detection (LOD) at 10 fM. The experimental data demonstrate both the PMMA microarray and SiO2 microsphere play important roles in enrichment of light illuminating at AgNPs for SERS detection, which is confirmed by the simulated electric field distributions. This sandwich optoplasmonic hybrid structure not only enlarges research field of surface plasmon, but also provides a novel SERS subtract for sensitive analysis in chem/bio-field.
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Affiliation(s)
- Suxia Hou
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Key ZLaboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China
| | - Jihao Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Key ZLaboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China
| | - Chenyang Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Key ZLaboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China
| | - Yuan Yuan
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Key ZLaboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China; Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Xin Zhang
- Chongqing Industry Polytechnic College, Chongqing 400044, China
| | - Yingzhou Huang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Key ZLaboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China.
| | - Sheng Yan
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
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2
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Wang J, Pinkse PWH, Segerink LI, Eijkel JCT. Bottom-Up Assembled Photonic Crystals for Structure-Enabled Label-Free Sensing. ACS NANO 2021; 15:9299-9327. [PMID: 34028246 PMCID: PMC8291770 DOI: 10.1021/acsnano.1c02495] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/19/2021] [Indexed: 05/10/2023]
Abstract
Photonic crystals (PhCs) display photonic stop bands (PSBs) and at the edges of these PSBs transport light with reduced velocity, enabling the PhCs to confine and manipulate incident light with enhanced light-matter interaction. Intense research has been devoted to leveraging the optical properties of PhCs for the development of optical sensors for bioassays, diagnosis, and environmental monitoring. These applications have furthermore benefited from the inherently large surface area of PhCs, giving rise to high analyte adsorption and the wide range of options for structural variations of the PhCs leading to enhanced light-matter interaction. Here, we focus on bottom-up assembled PhCs and review the significant advances that have been made in their use as label-free sensors. We describe their potential for point-of-care devices and in the review include their structural design, constituent materials, fabrication strategy, and sensing working principles. We thereby classify them according to five sensing principles: sensing of refractive index variations, sensing by lattice spacing variations, enhanced fluorescence spectroscopy, surface-enhanced Raman spectroscopy, and configuration transitions.
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Affiliation(s)
- Juan Wang
- BIOS
Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical
Medical Centre & Max Planck Center for Complex Fluid Dynamics, University of Twente, 7522 NB Enschede, The Netherlands
| | - Pepijn W. H. Pinkse
- Complex
Photonic Systems Group, MESA+ Institute for Nanotechnology, University of Twente, 7522 NB Enschede, The Netherlands
| | - Loes I. Segerink
- BIOS
Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical
Medical Centre & Max Planck Center for Complex Fluid Dynamics, University of Twente, 7522 NB Enschede, The Netherlands
| | - Jan C. T. Eijkel
- BIOS
Lab on a Chip Group, MESA+ Institute for Nanotechnology, Technical
Medical Centre & Max Planck Center for Complex Fluid Dynamics, University of Twente, 7522 NB Enschede, The Netherlands
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3
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Hong Y, Zhou X, Xu B, Huang Y, He W, Wang S, Wang C, Zhou G, Chen Y, Gong T. Optoplasmonic Hybrid Materials for Trace Detection of Methamphetamine in Biological Fluids through SERS. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24192-24200. [PMID: 32351116 DOI: 10.1021/acsami.0c00853] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Optoplasmonic materials comprising both photonic and plasmonic elements are of particular interest for the development of substrates for surface-enhanced Raman spectroscopy (SERS). In this work, a layer of analyte-carrying dielectric nano/microspheres is placed on top of a monolayer of gold nanoparticles to enhance the intensity of the electric (E-) field localization and to enrich the analyte close to the electromagnetic hot spots. Numerical simulations of the hybrid structure confirm an increased and spatially expanded E-field enhancement at the interface. Due to a decreasing filling fraction with increasing size of the dielectric spheres, simulations predict a saturated SERS enhancement for dielectric microspheres with a diameter larger than 4 μm, which is confirmed by experimental SERS measurements. The dielectric microsphere can be functionalized with surface ligands that facilitate the binding of target molecules in solution. The deposition of the analyte-loaded microspheres on the self-assembled gold nanoparticle ensures a high local concentration of analytes in the electromagnetic "hot" surface. The performance of the optoplasmonic SERS approach for detecting methamphetamine in saliva and urine is tested, and the detection of analytes at nanomolar (nM) concentrations is demonstrated.
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Affiliation(s)
- Yan Hong
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xin Zhou
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Buyi Xu
- Public Security Department of Sichuan Province, Chengdu 610000, China
| | - Yunzhong Huang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Zhuhai Founder Sci-Tech High-Density Electronics Co., Ltd. & Zhuhai Founder Sci-Tech Multilayer Circuit Board Co., Ltd., Zhuhai 519175, China
| | - Wei He
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shouxu Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chong Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Guoyun Zhou
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yuanming Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Tianxun Gong
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 611731, China
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4
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Spitzberg JD, Zrehen A, van Kooten XF, Meller A. Plasmonic-Nanopore Biosensors for Superior Single-Molecule Detection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900422. [PMID: 30941823 DOI: 10.1002/adma.201900422] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 02/19/2019] [Indexed: 05/26/2023]
Abstract
Plasmonic and nanopore sensors have separately received much attention for achieving single-molecule precision. A plasmonic "hotspot" confines and enhances optical excitation at the nanometer length scale sufficient to optically detect surface-analyte interactions. A nanopore biosensor actively funnels and threads analytes through a molecular-scale aperture, wherein they are interrogated by electrical or optical means. Recently, solid-state plasmonic and nanopore structures have been integrated within monolithic devices that address fundamental challenges in each of the individual sensing methods and offer complimentary improvements in overall single-molecule sensitivity, detection rates, dwell time and scalability. Here, the physical phenomena and sensing principles of plasmonic and nanopore sensing are summarized to highlight the novel complementarity in dovetailing these techniques for vastly improved single-molecule sensing. A literature review of recent plasmonic nanopore devices is then presented to delineate methods for solid-state fabrication of a range of hybrid device formats, evaluate the progress and challenges in the detection of unlabeled and labeled analyte, and assess the impact and utility of localized plasmonic heating. Finally, future directions and applications inspired by the present state of the art are discussed.
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Affiliation(s)
- Joshua D Spitzberg
- Department of Biomedical Engineering, Technion-IIT, Haifa, 32000, Israel
| | - Adam Zrehen
- Department of Biomedical Engineering, Technion-IIT, Haifa, 32000, Israel
| | | | - Amit Meller
- Department of Biomedical Engineering, Technion-IIT, Haifa, 32000, Israel
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
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Shi Q, Di W, Dong D, Yap LW, Li L, Zang D, Cheng W. A General Approach to Free-Standing Nanoassemblies via Acoustic Levitation Self-Assembly. ACS NANO 2019; 13:5243-5250. [PMID: 30969755 DOI: 10.1021/acsnano.8b09628] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Droplets suspended by acoustic levitation provide genuine substrate-free environments for understanding unconventional fluid dynamics, evaporation kinetics, and chemical reactions by circumventing solid surface and boundary effects. Using a fully levitated air-water interface by acoustic levitation in conjunction with drying-mediated nanoparticle self-assembly, here, we demonstrate a general approach to fabricating free-standing nanoassemblies, which can totally avoid solid surface effects during the entire process. This strategy has no limitation for the sizes or shapes of constituent metallic nanoparticle building blocks and can also be applied to fabricate free-standing bilayered and trilayered nanoassemblies or even three-dimensional hollow nanoassemblies. We believe that our strategy may be further extended to quantum dots, magnetic particles, colloids, etc. Hence, it may lead to a myriad of homogeneous or heterogeneous free-standing nanoassemblies with programmable functionalities.
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Affiliation(s)
- Qianqian Shi
- Department of Chemical Engineering, Faculty of Engineering , Monash University , Clayton 3800 , Victoria , Australia
- The Melbourne Centre for Nanofabrication , 151 Wellington Road , Clayton 3168 , Victoria , Australia
| | - Wenli Di
- Functional Soft Matter & Materials Group, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Science , Northwestern Polytechnical University , Xi'an , Shanxi 710129 , People's Republic of China
| | - Dashen Dong
- Department of Chemical Engineering, Faculty of Engineering , Monash University , Clayton 3800 , Victoria , Australia
- The Melbourne Centre for Nanofabrication , 151 Wellington Road , Clayton 3168 , Victoria , Australia
| | - Lim Wei Yap
- Department of Chemical Engineering, Faculty of Engineering , Monash University , Clayton 3800 , Victoria , Australia
- The Melbourne Centre for Nanofabrication , 151 Wellington Road , Clayton 3168 , Victoria , Australia
| | - Lin Li
- Functional Soft Matter & Materials Group, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Science , Northwestern Polytechnical University , Xi'an , Shanxi 710129 , People's Republic of China
| | - Duyang Zang
- Functional Soft Matter & Materials Group, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Science , Northwestern Polytechnical University , Xi'an , Shanxi 710129 , People's Republic of China
| | - Wenlong Cheng
- Department of Chemical Engineering, Faculty of Engineering , Monash University , Clayton 3800 , Victoria , Australia
- The Melbourne Centre for Nanofabrication , 151 Wellington Road , Clayton 3168 , Victoria , Australia
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6
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Zheng Y, Rosa L, Thai T, Ng SH, Juodkazis S, Bach U. Phase controlled SERS enhancement. Sci Rep 2019; 9:744. [PMID: 30679465 PMCID: PMC6346009 DOI: 10.1038/s41598-018-36491-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/23/2018] [Indexed: 01/23/2023] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) has attracted increasing interest for chemical and biochemical sensing. Several studies have shown that SERS intensities are significantly increased when an optical interference substrate composed of a dielectric spacer and a reflector is used as a supporting substrate. However, the origin of this additional enhancement has not been systematically studied. In this paper, high sensitivity SERS substrates composed of self-assembled core-satellite nanostructures and silica-coated silicon interference layers have been developed. Their SERS enhancement is shown to be a function of the thickness of silica spacer on a more reflective silicon substrate. Finite difference time domain modeling is presented to show that the SERS enhancement is due to a spacer contribution via a sign change of the reflection coefficients at the interfaces. The magnitude of the local-field enhancement is defined by the interference of light reflected from the silica-air and silica-silicon interfaces, which constructively added at the hot spots providing a possibility to maximize intensity in the nanogaps between the self-assembled nanoparticles by changing the thickness of silica layer. The core-satellite assemblies on a 135 nm silica-coated silicon substrate exhibit a SERS activity of approximately 13 times higher than the glass substrate.
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Affiliation(s)
- Yuanhui Zheng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China. .,Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization, Clayton South, Victoria, 3169, Australia. .,The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria, 3168, Australia.
| | - Lorenzo Rosa
- Swinburne University of Technology, Centre for Micro-Photonics (H74), P.O. Box 218, Hawthorn, Victoria, 3122, Australia.,Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, via Vivarelli 10, I-41125, Modena, Italy
| | - Thibaut Thai
- The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria, 3168, Australia.,Department of Materials Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
| | - Soon Hock Ng
- The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria, 3168, Australia.,Department of Materials Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia
| | - Saulius Juodkazis
- The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria, 3168, Australia. .,Swinburne University of Technology, Centre for Micro-Photonics (H74), P.O. Box 218, Hawthorn, Victoria, 3122, Australia.
| | - Udo Bach
- Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organization, Clayton South, Victoria, 3169, Australia. .,The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria, 3168, Australia. .,Department of Materials Engineering, Monash University, Wellington Road, Clayton, Victoria, 3800, Australia.
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7
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Sarychev AK, Ivanov A, Lagarkov A, Barbillon G. Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing. MATERIALS (BASEL, SWITZERLAND) 2018; 12:E103. [PMID: 30598001 PMCID: PMC6337457 DOI: 10.3390/ma12010103] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 12/04/2018] [Accepted: 12/27/2018] [Indexed: 11/27/2022]
Abstract
Metal-dielectric micro/nano-composites have surface plasmon resonances in visible and near-infrared domains. Excitation of coupled metal-dielectric resonances is also important. These different resonances can allow enhancement of the electromagnetic field at a subwavelength scale. Hybrid plasmonic structures act as optical antennae by concentrating large electromagnetic energy in micro- and nano-scales. Plasmonic structures are proposed for various applications such as optical filters, investigation of quantum electrodynamics effects, solar energy concentration, magnetic recording, nanolasing, medical imaging and biodetection, surface-enhanced Raman scattering (SERS), and optical super-resolution microscopy. We present the review of recent achievements in experimental and theoretical studies of metal-dielectric micro and nano antennae that are important for fundamental and applied research. The main impact is application of metal-dielectric optical antennae for the efficient SERS sensing.
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Affiliation(s)
- Andrey K Sarychev
- Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia.
| | - Andrey Ivanov
- Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia.
| | - Andrey Lagarkov
- Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia.
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8
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Fu B, Zhang Z. Periodical 2D Photonic-Plasmonic Au/TiO x Nanocavity Resonators for Photoelectrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703610. [PMID: 29665208 DOI: 10.1002/smll.201703610] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Effective light trapping at the nanoscale is vital for efficient photoelectrochemical (PEC) applications. Photonic and plasmonic resonators are the two most promising approaches for this purpose, and the synergetic combination of these two resonators will tail the propagation lengths of incident light along with field enhancements, and thus presents further enhanced light-trapping activity. Herein, a new hybrid photonic-plasmonic resonator is proposed through sputtering plasmonic Au nanoparticles (NPs) into the 2D photonic TiOx nanocavity. Through facile control of the size of Au NPs, the matching of resonant wavelength of plasmonic Au NPs and photonic nanocavities maximize the light-trapping intensity and thus further improve the PEC performance. Furthermore, for expanding the PEC applications, after functionalization of Au NPs with aptamer as a biomolecular recognition unit, a PEC aptasensor is also proposed and presents the highest sensitivity for antibiotic detection.
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Affiliation(s)
- Baihe Fu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Zhonghai Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
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9
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Lagarkov A, Boginskaya I, Bykov I, Budashov I, Ivanov A, Kurochkin I, Ryzhikov I, Rodionov I, Sedova M, Zverev A, Sarychev AK. Light localization and SERS in tip-shaped silicon metasurface. OPTICS EXPRESS 2017; 25:17021-17038. [PMID: 28789200 DOI: 10.1364/oe.25.017021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/03/2017] [Indexed: 06/07/2023]
Abstract
Optical properties of two dimensional periodic system of the silicon micro-cones are investigated. The metasurface, composed of the silicon tips, shows enhancement of the local optical field. Finite element computer simulations as well as real experiment reveal anomalous optical response of the dielectric metasurface due to excitation of the dielectric resonances. Various electromagnetic resonances are considered in the dielectric cone. The metal-dielectric resonances, which are excited between metal nanoparticles and dielectric cones, are also considered. The resonance local electric field can be much larger than the field in the usual surface plasmon resonances. To investigate local electric field the signal molecules are deposited on the metal nanoparticles. We demonstrate enhancement of the electromagnetic field and Raman signal from the complex of DTNB acid molecules and gold nanoparticles, which are distributed over the metasurface. The metasurfaces composed from the dielectric resonators can have quasi-continuous spectrum and serve as an efficient SERS substrates.
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10
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Chen T, Reinhard BM. Assembling Color on the Nanoscale: Multichromatic Switchable Pixels from Plasmonic Atoms and Molecules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3522-7. [PMID: 26990416 PMCID: PMC4939277 DOI: 10.1002/adma.201506179] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/23/2016] [Indexed: 05/18/2023]
Abstract
Nanoparticles of different materials, shapes, and sizes are integrated into plasmonic atoms and molecules of defined shape and location through sequential directed self-assembly following a single patterning step. A rational tuning of the emitted color across the visible range of the electromagnetic spectrum and switchable polarization properties are demonstrated. Self-assembled plasmonic pixels provide tunable, stable, and switchable optical responses.
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Affiliation(s)
- Tianhong Chen
- Department of Chemistry and The Photonics Center Boston University, Boston, MA 02215 (U.S.A.)
| | - Björn M. Reinhard
- Department of Chemistry and The Photonics Center Boston University, Boston, MA 02215 (U.S.A.)
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11
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Liu Y, Hu D, Pang L, Gao F, Zhang Z, Du J. Optoplasmonic probe to realize scanning near-field Raman microscopy. OPTICS EXPRESS 2016; 24:5243-5252. [PMID: 29092349 DOI: 10.1364/oe.24.005243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tip-enhanced Raman spectroscopy (TERS) is a powerful scanning probe technique for Raman detections in nanotechnology to date. However, limited by the physical principles of a nanosize tapered metal (or metal-coated) probe used in a TERS device, only far-field without near-field Raman signal can be collected by the TERS with the metal probe. This makes conventional TERS lower in efficiency and cannot be a real near-field Raman microscopy. In this paper, we propose a simple and realizable optoplasmonic probe model, which is composed of a dielectric microsphere and a metal nanobowtie, to realize an ideal scanning near-field Raman microscopy (SNRM). Using finite-difference time-domain (FDTD) method, calculation results of electric field distributions of the proposed probe demonstrate that the probe provides three outstanding characteristics, including strong enhancement of local electric field, nanoscale distributions of the produced electric filed, and collection enhancement of emitted energy with wide wavelength range in near field. These characteristics of the probe resolve the detecting restrictions of metal probes and provide a real near-field scanning method. Therefore, a potentially novel SNRM can be expected to extend Raman application range greatly.
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12
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Lee D, Li MY, Sui M, Zhang Q, Pandey P, Kim ES, Lee J. Observation of Shape, Configuration, and Density of Au Nanoparticles on Various GaAs Surfaces via Deposition Amount, Annealing Temperature, and Dwelling Time. NANOSCALE RESEARCH LETTERS 2015; 10:950. [PMID: 26055482 PMCID: PMC4452356 DOI: 10.1186/s11671-015-0950-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 05/21/2015] [Indexed: 05/30/2023]
Abstract
Metallic nanoparticles have been widely witnessed in many applications: serving as the catalysts for various nanowire systems, as the active mediums of various device applications, and also for the nanoscale templates for hybrid quantum structures. In the performance of devices and configurations of the resulting nanostructures, the size and density of nanoparticles play critical roles. In this paper, the control of self-assembled Au droplets on GaAs (100), (110), and (111) is systematically investigated through the variation of deposition amount (DA), annealing temperature (AT), and dwelling time (DT). Based on the Volmer-Weber growth model, the formation of Au droplets and dramatic evolution of Au nanostructures on various GaAs surfaces is observed from the Au clusters to the round-dome shapes with the AT variation between 250 and 550 °C. With the systematic DA control, a radical size and density evolution of Au droplets shows the size expansion of over 400 % in average height and 800 % in average lateral diameter, while the density shows over two orders of decrease. With the DT variation, the self-assembled Au droplets tend to grow larger due to the Ostwald ripening while a clear distinction among the surface indexes is observed.
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Affiliation(s)
- Daewoo Lee
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Ming-Yu Li
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Mao Sui
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Quanzhen Zhang
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Puran Pandey
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Eun-Soo Kim
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
| | - Jihoon Lee
- />College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 139-701 South Korea
- />Institute of Nanoscale Science and Engineering, University of Arkansas, Fayetteville, AR 72701 USA
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13
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Liu D, Peng X, Wu B, Zheng X, Chuong TT, Li J, Sun S, Stucky GD. Uniform Concave Polystyrene-Carbon Core–Shell Nanospheres by a Swelling Induced Buckling Process. J Am Chem Soc 2015. [DOI: 10.1021/jacs.5b05027] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Deyu Liu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Xinxing Peng
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Binghui Wu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xueyun Zheng
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Tracy T Chuong
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Jialuo Li
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Shigang Sun
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Galen D. Stucky
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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14
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Hong Y, Ahn W, Boriskina SV, Zhao X, Reinhard BM. Directed Assembly of Optoplasmonic Hybrid Materials with Tunable Photonic-Plasmonic Properties. J Phys Chem Lett 2015; 6:2056-2064. [PMID: 26266502 DOI: 10.1021/acs.jpclett.5b00366] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Optoplasmonic materials are metallo-dielectric hybrid structures that combine metallic and dielectric components in defined geometries in which plasmonic and photonic modes synergistically interact. These beneficial interactions can be harnessed by integrating plasmonic nanoantennas into defined photonic environments generated, for instance, by discrete optical resonators or extended systems of diffractively coupled nanoparticles. Optoplasmonic structures facilitate photonic-plasmonic mode coupling and offer degrees of freedom for creating optical fields with predefined amplitude and phase in space and time that are absent in conventional photonic or plasmonic structures. This Perspective reviews the fundamental electromagnetic mechanisms underlying selected optoplasmonic approaches with an emphasis on materials available through template-guided self-assembly strategies.
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Affiliation(s)
- Yan Hong
- †Department of Chemistry and The Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Wonmi Ahn
- †Department of Chemistry and The Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Svetlana V Boriskina
- §Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xin Zhao
- †Department of Chemistry and The Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Björn M Reinhard
- †Department of Chemistry and The Photonics Center, Boston University, Boston, Massachusetts 02215, United States
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15
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Greybush NJ, Saboktakin M, Ye X, Della Giovampaola C, Oh SJ, Berry NE, Engheta N, Murray CB, Kagan CR. Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly. ACS NANO 2014; 8:9482-91. [PMID: 25182662 DOI: 10.1021/nn503675a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We demonstrate plasmonic enhancement of upconversion luminescence in individual nanocrystal heterodimers formed by template-assisted self-assembly. Lithographically defined, shape-selective templates were used to deterministically coassemble single Au nanorods in proximity to single hexagonal (β-phase) NaYF4:Yb(3+),Er(3+) upconversion nanophosphors. By tailoring the dimensions of the rods to spectrally tune their longitudinal surface plasmon resonance to match the 977 nm excitation wavelength of the phosphors and by spatially localizing the phosphors in the intense near-fields surrounding the rod tips, several-fold luminescence enhancements were achieved. The enhancement effects exhibited a strong dependence on the excitation light's polarization relative to the rod axis. In addition, greater enhancement was observed at lower excitation power densities due to the nonlinear behavior of the upconversion process. The template-based coassembly scheme utilized here for plasmonic coupling offers a versatile platform for improving our understanding of optical interactions among individual chemically prepared nanocrystal components.
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Affiliation(s)
- Nicholas J Greybush
- Department of Materials Science and Engineering, ‡Department of Electrical and Systems Engineering, §Department of Chemistry, ∥Department of Physics and Astronomy, and ⊥Department of Bioengineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
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