1
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Moon T, Joo H, Das B, Koo Y, Kang M, Lee H, Kim S, Chen C, Suh YD, Kim DS, Park KD. Adaptive Gap-Tunable Surface-Enhanced Raman Spectroscopy. NANO LETTERS 2024; 24:3777-3784. [PMID: 38497654 DOI: 10.1021/acs.nanolett.4c00289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Gap plasmon (GP) resonance in static surface-enhanced Raman spectroscopy (SERS) structures is generally too narrow and not tunable. Here, we present an adaptive gap-tunable SERS device to selectively enhance and modulate different vibrational modes via active flexible Au nanogaps, with adaptive optical control. The tunability of GP resonance is up to ∼1200 cm-1 by engineering gap width, facilitated by mechanical bending of a polyethylene terephthalate substrate. We confirm that the tuned GP resonance selectively enhances different Raman spectral regions of the molecules. Additionally, we dynamically control the SERS intensity through the wavefront shaping of excitation beams. Furthermore, we demonstrate simulation results, exhibiting the mechanical and optical properties of a one-dimensional flexible nanogap and their advantage in high-speed biomedical sensing. Our work provides a unique approach for observing and controlling the enhanced chemical responses with dynamic tunability.
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Affiliation(s)
- Taeyoung Moon
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Huitae Joo
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Bamadev Das
- Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeonjeong Koo
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Mingu Kang
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Hyeongwoo Lee
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Sunghwan Kim
- Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Cheng Chen
- Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yung Doug Suh
- Department of Chemistry & School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Dai-Sik Kim
- Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Kyoung-Duck Park
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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2
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Liu Z, Xu B, Cheng Y, Si M, Chu X, Sun M, Fang Y. Spectral analysis of oxidation on localized surface plasmon resonance of copper nanoparticles thin film. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123202. [PMID: 37531684 DOI: 10.1016/j.saa.2023.123202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/04/2023]
Abstract
Copper nanoparticles (CuNPs) possess localized surface plasmon resonance (LSPR) effect. Cu thin films composed of individual CuNPs exhibit stronger LSPR than the individual CuNPs due to the LSPR coupling among CuNPs. However, CuNPs are easy to be oxidized, which results in the rapid LSPR damping of the CuNPs thin films. Simulation of the variations of the coupled LSPR of two adjacent CuNPs with the thickness of oxide shells formed during oxidation is of great importance for understanding the mechanisms of the strong LSPR of CuNPs thin films and its rapid attenuation. In this paper, Discrete-dipole approximation method is used to simulate the extinction spectra of two adjacent spherical CuNPs as a function of the shell thickness (t), the ambient refractive index (n), the diameter (D) of the CuNPs, and the inter-nanoparticle spacing (L). The calculation is validated by experimental results. According to our model, for a definite CuNPs thin films, the oxide shell thickness of CuNPs can be calculated only if the extinction spectra and the morphology are provided. Further, it is found when the oxide shell thickness is small (t/R< 0.3), increasing n and decreasing L/D have an obvious synergistic effect on enhancing the coupled LSPR, but this synergistic effect weakens with the deepening of oxidation, and disappeared when t/R > 0.5. This study provides a calculation method for coupled core-shell nanoparticles and throws light on the role of oxidation on the rapid damped LSPR of CuNPs thin films.
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Affiliation(s)
- Zhonghua Liu
- Department of Vacuum Science and Technology, Hefei University of Technology, Hefei 230009, China
| | - Bin Xu
- Department of Vacuum Science and Technology, Hefei University of Technology, Hefei 230009, China
| | - Yuqing Cheng
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Mengting Si
- School of Physics, Peking University, Beijing 100083, China
| | - Xiangqian Chu
- Department of Vacuum Science and Technology, Hefei University of Technology, Hefei 230009, China
| | - Mengtao Sun
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China.
| | - Yingcui Fang
- Department of Vacuum Science and Technology, Hefei University of Technology, Hefei 230009, China.
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3
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Wang J, Wang M, Zhao F. Laser shock forming of metal nanostructures with ultrafine gaps. APPLIED OPTICS 2023; 62:5809-5814. [PMID: 37707200 DOI: 10.1364/ao.493282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/31/2023] [Indexed: 09/15/2023]
Abstract
The nanogaps between metal nanostructures are of great importance in nanotechnology. However, low cost and high precision fabrication of such nanogaps is still a difficult problem. In this paper, a method combining nanosecond laser shock and flexible metal film is proposed to form ultrafine gaps between metal nanostructures. The forming mechanism of ultrafine gaps between metal nanostructures was revealed by studying the superplastic deformation, spatiotemporal evolution of stress and strain, and cooperative deformation of the flexible metal thin film and metal nanostructures under laser shock. On the basis of the mechanism study, the effects of laser parameters and gold nanoparticle size on the forming of ultrafine gaps were further studied, so as to achieve high precision forming of ultrafine gaps (<10n m) between metal nanostructures.
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4
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Gabbani A, Sangregorio C, Tandon B, Nag A, Gurioli M, Pineider F. Magnetoplasmonics beyond Metals: Ultrahigh Sensing Performance in Transparent Conductive Oxide Nanocrystals. NANO LETTERS 2022; 22:9036-9044. [PMID: 36346871 PMCID: PMC9706655 DOI: 10.1021/acs.nanolett.2c03383] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Active modulation of the plasmonic response is at the forefront of today's research in nano-optics. For a fast and reversible modulation, external magnetic fields are among the most promising approaches. However, fundamental limitations of metals hamper the applicability of magnetoplasmonics in real-life active devices. While improved magnetic modulation is achievable using ferromagnetic or ferromagnetic-noble metal hybrid nanostructures, these suffer from severely broadened plasmonic response, ultimately decreasing their performance. Here we propose a paradigm shift in the choice of materials, demonstrating for the first time the outstanding magnetoplasmonic performance of transparent conductive oxide nanocrystals with plasmon resonance in the near-infrared. We report the highest magneto-optical response for a nonmagnetic plasmonic material employing F- and In-codoped CdO nanocrystals, due to the low carrier effective mass and the reduced plasmon line width. The performance of state-of-the-art ferromagnetic nanostructures in magnetoplasmonic refractometric sensing experiments are exceeded, challenging current best-in-class localized plasmon-based approaches.
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Affiliation(s)
- Alessio Gabbani
- INSTM
and Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124Pisa, Italy
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
- CNR-ICCOM, Via Madonna
del Piano 10, 50019Sesto Fiorentino, FI, Italy
| | - Claudio Sangregorio
- CNR-ICCOM, Via Madonna
del Piano 10, 50019Sesto Fiorentino, FI, Italy
- INSTM
and Department of Chemistry “U. Schiff”, Università degli Studi di Firenze, via della Lastruccia 3, 50019Sesto Fiorentino, FI, Italy
| | - Bharat Tandon
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune411008, India
| | - Angshuman Nag
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune411008, India
| | - Massimo Gurioli
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
| | - Francesco Pineider
- INSTM
and Department of Chemistry and Industrial Chemistry, Università di Pisa, via G. Moruzzi 13, 56124Pisa, Italy
- Department
of Physics and Astronomy, Università
degli Studi di Firenze, via Sansone 1, 50019Sesto Fiorentino, FI, Italy
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5
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Boyce A, Stewart JW, Avila J, Shen Q, Zhang S, Wheeler VD, Mikkelsen MH. Actively Tunable Metasurfaces via Plasmonic Nanogap Cavities with Sub-10-nm VO 2 Films. NANO LETTERS 2022; 22:3525-3531. [PMID: 35472261 PMCID: PMC9101075 DOI: 10.1021/acs.nanolett.1c04175] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 03/20/2022] [Indexed: 05/31/2023]
Abstract
Actively tunable optical materials integrated with engineered subwavelength structures could enable novel optoelectronic devices, including reconfigurable light sources and tunable on-chip spectral filters. The phase-change material vanadium dioxide (VO2) provides a promising solid-state solution for dynamic tuning; however, previous demonstrations have been limited to thicker and often rough VO2 films or require a lattice-matched substrate for growth. Here, sub-10-nm-thick VO2 films are realized by atomic layer deposition (ALD) and integrated with plasmonic nanogap cavities to demonstrate tunable, spectrally selective absorption across 1200 nm in the near-infrared (NIR). Upon inducing the phase transition via heating, the absorption resonance is blue-shifted by as much as 60 nm. This process is reversible upon cooling and repeatable over more than ten temperature cycles. Dynamic, ultrathin VO2 films deposited by ALD, as demonstrated here, open up new potential architectures and applications where VO2 can be utilized to provide reconfigurability including three-dimensional, flexible and large-area structures.
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Affiliation(s)
- Andrew
M. Boyce
- Department
of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Jon W. Stewart
- Department
of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Jason Avila
- U.S.
Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Qixin Shen
- Department
of Physics, Duke University, Durham, North Carolina 27708, United States
| | - Siyuan Zhang
- Department
of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, United States
| | | | - Maiken H. Mikkelsen
- Department
of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, United States
- Department
of Physics, Duke University, Durham, North Carolina 27708, United States
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6
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Charconnet M, Kuttner C, Plou J, García-Pomar JL, Mihi A, Liz-Marzán LM, Seifert A. Mechanically Tunable Lattice-Plasmon Resonances by Templated Self-Assembled Superlattices for Multi-Wavelength Surface-Enhanced Raman Spectroscopy. SMALL METHODS 2021; 5:e2100453. [PMID: 34927949 DOI: 10.1002/smtd.202100453] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Indexed: 05/27/2023]
Abstract
Lattice plasmons, i.e., diffractively coupled localized surface plasmon resonances, occur in long-range ordered plasmonic nanostructures such as 1D and 2D periodic lattices. Such far-field coupled resonances can be employed for ultrasensitive surface-enhanced Raman spectroscopy (SERS), provided they are spectrally matched to the excitation wavelength. The spectral positions of lattice plasmon modes critically depend on the lattice period and uniformity, owing to their pronounced sensitivity to structural disorder. We report the fabrication of superlattices by templated self-assembly of gold nanoparticles on a flexible support, with tunable lattice-plasmon resonances by means of macroscopic strain. We demonstrate that the highest SERS performance is achieved by matching the lattice plasmon mode to the excitation wavelength, by post-assembly fine-tuning of long-range structural parameters. Both asymmetric and symmetric lattice deformations can be used to adapt a single lattice structure to both red-shifted and blue-shifted excitation lines, as exemplified by lattice expansion and contraction, respectively. This proof-of-principle study represents a basis for alternative designs of adaptive functional nanostructures with mechanically tunable lattice resonances using strain as a macroscopic control parameter.
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Affiliation(s)
- Mathias Charconnet
- CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Spain
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
| | - Christian Kuttner
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
| | - Javier Plou
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
- Centro de Investigación en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Donostia-San Sebastián, 20014, Spain
| | | | - Agustín Mihi
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Bellaterra, 08193, Spain
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
- Centro de Investigación en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Donostia-San Sebastián, 20014, Spain
- IKERBASQUE - Basque Foundation for Science, Bilbao, 48009, Spain
- Department of Applied Chemistry, University of the Basque Country (EHU-UPV), Donostia-San Sebastián, 20018, Spain
| | - Andreas Seifert
- CIC nanoGUNE BRTA, Donostia-San Sebastián, 20018, Spain
- IKERBASQUE - Basque Foundation for Science, Bilbao, 48009, Spain
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7
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Hu Y, Ou X, Zeng T, Lai J, Zhang J, Li X, Luo X, Li L, Fan F, Duan H. Electrically Tunable Multifunctional Polarization-Dependent Metasurfaces Integrated with Liquid Crystals in the Visible Region. NANO LETTERS 2021; 21:4554-4562. [PMID: 34047184 DOI: 10.1021/acs.nanolett.1c00104] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Metasurfaces open up new avenues for designing planar optics, enabling compact dynamic metadevices. Numerous dynamic strategies have been proposed, among which liquid crystal (LC) based metasurfaces are expected due to the maturity of LC materials. However, existing schemes rarely exploit the polarization manipulation capabilities of metasurfaces and the limited performance hinders the development of practical addressable devices. Here, we demonstrate an electrically tunable multifunctional polarization-dependent metasurface integrated with LCs in the visible range. By a combination of the helicity-dependent metasurface and the birefringent LCs, continuous intensity tuning and switching of two helicity channels are realized. Electrically tunable mono- and multicolor switchable metaholograms and dynamic varifocal metalenses are demonstrated with a simple and performance-enhancing integration scheme. Further, electrically addressable dynamic metasurfaces are achieved. The proposed modulation and integration schemes pave the way for addressable dynamic metasurface devices in various applications, such as space light modulators, light detection and ranging systems, and holographic displays.
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Affiliation(s)
- Yueqiang Hu
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
- Advanced Manufacturing Laboratory of Micro-Nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen, 518000, People's Republic of China
| | - Xiangnian Ou
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Tibin Zeng
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jiajie Lai
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Jian Zhang
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Xin Li
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Xuhao Luo
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Ling Li
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Fan Fan
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Huigao Duan
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
- Advanced Manufacturing Laboratory of Micro-Nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen, 518000, People's Republic of China
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8
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Zhou S, Wang Z, Dong C, Bian J, Zhang W. Wavelength-dependent laser-induced dynamic nano-annealing of single plasmonic antennas. NANOSCALE 2021; 13:8991-8997. [PMID: 33973586 DOI: 10.1039/d0nr09078f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, we studied the wavelength-dependent laser-induced dynamic annealing of single plasmonic nano-antennas using in situ white light spectroscopy. Unexpected back-and-forth motions of rapidly melted single nano-antennas were observed upon excitation with a 532 nm laser, while only gradual opening of nanogaps was found in the case of a 405 nm laser. Theoretical analyses indicate that the dramatic nano-annealing phenomenon was caused by a series of laser-induced multiphysical processes at the nanoscale. It not only leads to the local heating effect, but also induces complex behaviors such as self-accelerated melting, asymmetry-induced nano-photophoretic forces and optical forces. Our work demonstrates the complexity of light-matter interactions at the nanoscale, and provides new possibilities for shaping and manipulating plasmonic nanostructures.
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Affiliation(s)
- Shuang Zhou
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
| | - Zhong Wang
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
| | - Chenyu Dong
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
| | - Jie Bian
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
| | - Weihua Zhang
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
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9
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Mitomo H, Ijiro K. Controlled Nanostructures Fabricated by the Self-Assembly of Gold Nanoparticles via Simple Surface Modifications. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210031] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hideyuki Mitomo
- Research Institute for Electronic Science (RIES), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Kuniharu Ijiro
- Research Institute for Electronic Science (RIES), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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10
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Nakamura S, Mitomo H, Ijiro K. Assembly and Active Control of Nanoparticles using Polymer Brushes as a Scaffold. CHEM LETT 2021. [DOI: 10.1246/cl.200767] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Satoshi Nakamura
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560, Japan
| | - Hideyuki Mitomo
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Kuniharu Ijiro
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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11
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Peng J, Jeong H, Smith M, Chikkaraddy R, Lin Q, Liang H, De Volder MFL, Vignolini S, Kar‐Narayan S, Baumberg JJ. FullyPrinted Flexible Plasmonic Metafilms with Directional Color Dynamics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002419. [PMID: 33511008 PMCID: PMC7816707 DOI: 10.1002/advs.202002419] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/22/2020] [Indexed: 05/29/2023]
Abstract
Plasmonic metafilms have been widely utilized to generate vivid colors, but making them both active and flexible simultaneously remains a great challenge. Here flexible active plasmonic metafilms constructed by printing electrochromic nanoparticles onto ultrathin metal films (<15 nm) are presented, offering low-power electricallydriven color switching. In conjunction with commercially available printing techniques, such flexible devices can be patterned using lithography-free approaches, opening up potential for fullyprinted electrochromic devices. Directional optical effects and dynamics show perceived upward and downward colorations can differ, arising from the dissimilar plasmonic mode excitation between nanoparticles and ultrathin metal films.
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Affiliation(s)
- Jialong Peng
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
| | - Hyeon‐Ho Jeong
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
- Present address:
School of Electrical Engineering and Computer ScienceGwangju Institute of Science and TechnologyGwangju61005Republic of Korea
| | - Michael Smith
- Department of Materials Science & MetallurgyUniversity of CambridgeCambridgeCB3 0FSUK
| | - Rohit Chikkaraddy
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
| | - Qianqi Lin
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
| | - Hsin‐Ling Liang
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
- Institute for ManufacturingDepartment of EngineeringUniversity of CambridgeCambridgeCB3 0FSUK
| | - Michael F. L. De Volder
- Institute for ManufacturingDepartment of EngineeringUniversity of CambridgeCambridgeCB3 0FSUK
| | - Silvia Vignolini
- Department of ChemistryUniversity of CambridgeCambridgeCB2 1EWUK
| | - Sohini Kar‐Narayan
- Department of Materials Science & MetallurgyUniversity of CambridgeCambridgeCB3 0FSUK
| | - Jeremy J. Baumberg
- NanoPhotonics Centre, Cavendish LaboratoryUniversity of CambridgeCambridgeCB3 0HEUK
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12
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Chen Y, Ai B, Wong ZJ. Soft optical metamaterials. NANO CONVERGENCE 2020; 7:18. [PMID: 32451734 PMCID: PMC7248166 DOI: 10.1186/s40580-020-00226-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/28/2020] [Indexed: 05/22/2023]
Abstract
Optical metamaterials consist of artificially engineered structures exhibiting unprecedented optical properties beyond natural materials. Optical metamaterials offer many novel functionalities, such as super-resolution imaging, negative refraction and invisibility cloaking. However, most optical metamaterials are comprised of rigid materials that lack tunability and flexibility, which hinder their practical applications. This limitation can be overcome by integrating soft matters within the metamaterials or designing responsive metamaterial structures. In addition, soft metamaterials can be reconfigured via optical, electrical, thermal and mechanical stimuli, thus enabling new optical properties and functionalities. This paper reviews different types of soft and reconfigurable optical metamaterials and their fabrication methods, highlighting their exotic properties. Future directions to employ soft optical metamaterials in next-generation metamaterial devices are identified.
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Affiliation(s)
- Yixin Chen
- Department of Aerospace Engineering, Texas A&M University, College Station, Texas, 77843, USA
| | - Bin Ai
- Department of Aerospace Engineering, Texas A&M University, College Station, Texas, 77843, USA
| | - Zi Jing Wong
- Department of Aerospace Engineering, Texas A&M University, College Station, Texas, 77843, USA.
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13
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Wang Y, Zhang Z, Zhao Y. The IR plasmonic properties of sub-wavelength ITO rod arrays predicted by anisotropic effective medium theory. NANOTECHNOLOGY 2020; 31:075203. [PMID: 31661675 DOI: 10.1088/1361-6528/ab5275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Simple three-layer Fresnel equations combined with Maxwell-Garnett approximation were applied to study the IR plasmonic properties of indium-tin-oxide (ITO) nanorods. By treating the anisotropic nanorod layer as a layer with an effective dielectric constant, and using anisotropic effective medium theory, we were able to accurately predict the surface plasmon resonance behavior of ITO nanorods with different nanorod length, spacing, and tilt angle. This model allows a fast and computationally inexpensive calculation to predict the plasmonic properties of arrayed nanorods.
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Affiliation(s)
- Yanfeng Wang
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China. Department of Physics and Astronomy, and Nanoscale Science and Engineering Center, University of Georgia, Athens, GA 30602, United States of America
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14
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Kumar A, Das N, Satija NK, Mandrah K, Roy SK, Rayavarapu RG. A Novel Approach towards Synthesis and Characterization of Non-Cytotoxic Gold Nanoparticles Using Taurine as Capping Agent. NANOMATERIALS 2019; 10:nano10010045. [PMID: 31878144 PMCID: PMC7023053 DOI: 10.3390/nano10010045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 11/16/2022]
Abstract
Metal gold nanoparticles are of great interest due to their unique physico-chemical properties and their potential to be used as nano-probes in biosensors, drug delivery, and therapeutic applications. Currently, many capping agents are used for metal gold nanoparticles, such as cetyltrimethylammonium bromide (CTAB) and tri-sodium citrate that have been reported to be toxic and hinders biological applications. To address this issue, we report, for the first time, the use of taurine as a stable non-cytotoxic capping agent for synthesizing gold nanoparticles by using an in situ wet-chemical method. This facile method resulted in monodisperse gold nanospheres with a high yield and stability. Monodisperse gold nanospheres with average diameters of 6.9 nm and 46 nm were synthesized at a high yield with controlled morphology. Temperature played a critical role in determining the size of the taurine-capped gold nanoparticles. The subtle changes in the reaction parameters had a tremendous effect on the final size of nanoparticles and their stability. The synthesized nanoparticles were characterized by using optical spectroscopy, a ZetaSizer, a NanoSight, Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), X-ray Photon Spectroscopy (XPS) and Electron Microscopy to understand their physico-chemical properties. Taurine was explored as a capping and stabilizing agent for gold nanospheres, which were evaluated for their toxicity responses towards human liver carcinoma cells (HepG2) via MTT assay.
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Affiliation(s)
- Akash Kumar
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nabojit Das
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Neeraj Kumar Satija
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Kapil Mandrah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Somendu Kumar Roy
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Raja Gopal Rayavarapu
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Correspondence:
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15
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Li J, Liu Y, Lin L, Wang M, Jiang T, Guo J, Ding H, Kollipara PS, Inoue Y, Fan D, Korgel BA, Zheng Y. Optical nanomanipulation on solid substrates via optothermally-gated photon nudging. Nat Commun 2019; 10:5672. [PMID: 31831746 PMCID: PMC6908671 DOI: 10.1038/s41467-019-13676-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 11/11/2019] [Indexed: 12/16/2022] Open
Abstract
Constructing colloidal particles into functional nanostructures, materials, and devices is a promising yet challenging direction. Many optical techniques have been developed to trap, manipulate, assemble, and print colloidal particles from aqueous solutions into desired configurations on solid substrates. However, these techniques operated in liquid environments generally suffer from pattern collapses, Brownian motion, and challenges that come with reconfigurable assembly. Here, we develop an all-optical technique, termed optothermally-gated photon nudging (OPN), for the versatile manipulation and dynamic patterning of a variety of colloidal particles on a solid substrate at nanoscale accuracy. OPN takes advantage of a thin surfactant layer to optothermally modulate the particle-substrate interaction, which enables the manipulation of colloidal particles on solid substrates with optical scattering force. Along with in situ optical spectroscopy, our non-invasive and contactless nanomanipulation technique will find various applications in nanofabrication, nanophotonics, nanoelectronics, and colloidal sciences.
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Affiliation(s)
- Jingang Li
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA
| | - Yaoran Liu
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Linhan Lin
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Mingsong Wang
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Taizhi Jiang
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Jianhe Guo
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA
| | - Hongru Ding
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
| | | | - Yuji Inoue
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Donglei Fan
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Brian A Korgel
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Yuebing Zheng
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USA.
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA.
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16
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Kim YH, Kim DJ, Lee S, Kim DH, Park SG, Kim SH. Microfluidic Designing Microgels Containing Highly Concentrated Gold Nanoparticles for SERS Analysis of Complex Fluids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1905076. [PMID: 31778013 DOI: 10.1002/smll.201905076] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/23/2019] [Indexed: 06/10/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is one of the most promising methods to detect small molecules for point-of-care analysis as it is rapid, nondestructive, label-free, and applicable for aqueous samples. Here, microgels containing highly concentrated yet evenly dispersed gold nanoparticles are designed to provide SERS substrates that simultaneously achieve contamination-free metal surfaces and high signal enhancement and reproducibility. With capillary microfluidic devices, water-in-oil-in-water (W/O/W) double-emulsion drops are prepared to contain gold nanoparticles and hydrogel precursors in innermost drop. Under hypertonic condition, water is selectively pumped out from the innermost drops. Therefore, gold nanoparticles are gently concentrated without forming aggregates, which are then captured by hydrogel matrix. The resulting microgels have a concentration of gold nanoparticles ≈30 times higher and show Raman intensity two orders of magnitude higher than those with no enrichment. In addition, even distribution of gold nanoparticles results in uniform Raman intensity, providing high signal reproducibility. Moreover, as the matrix of the microgel serves as a molecular filter, large adhesive proteins are rejected, which enables the direct detection of small molecules dissolved in the protein solution. It is believed that this advanced SERS platform is useful for in situ detection of toxic molecules in complex mixtures such as biological fluids, foods, and cosmetics.
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Affiliation(s)
- Yeong Hwa Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
| | - Dong Jae Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
| | - Sangmin Lee
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
| | - Dong-Ho Kim
- Advanced Nano-Surface Department, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam, 51508, Korea
| | - Sung-Gyu Park
- Advanced Nano-Surface Department, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam, 51508, Korea
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
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17
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Willets KA. Supercharging Superlocalization Microscopy: How Electrochemical Charging of Plasmonic Nanostructures Uncovers Hidden Heterogeneity. ACS NANO 2019; 13:6145-6150. [PMID: 31184136 DOI: 10.1021/acsnano.9b04062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Superlocalization microscopy enables the position of single plasmonic nanoparticles to be determined with <25 nm precision, enabling single-nanoparticle tracking and super-resolution imaging experiments to be conducted with sub-diffraction-limited spatial resolution. In many of these applications, the superlocalized position of the nanoparticle is assumed to correspond to the geometric center of the nanoparticle. However, work reported by Wang and co-workers in this issue of ACS Nano suggests that this assumption can be incorrect, based on studies in which electrochemically charging a nanoparticle leads to reproducible shifts in its scattering center. The shift is believed to originate from nonuniform charge accumulation in the nanoparticle, due to the inherent heterogeneity in nanoparticle surface properties. This Perspective explores the implications of this result, both for using this shift to probe dynamic changes in nanoparticle surface chemistry as well as for exploiting nonuniform charge accumulation to promote site-specific chemical reactions.
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Affiliation(s)
- Katherine A Willets
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
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18
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Bibbò L, Liu Q, Khan K, Yadav A, Elshahat S, Deng ZL, Ouyang Z. High-speed amplitude modulator with a high modulation index based on a plasmonic resonant tunable metasurface. APPLIED OPTICS 2019; 58:2687-2694. [PMID: 31045071 DOI: 10.1364/ao.58.002687] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
High-speed optical amplitude modulation is important for optical communication systems and sensors. Moreover, nano-optical modulators are important for developing optical-communication-aided high-speed parallel-operation processors and micro-biomedical sensors for inside-blood-capillary examinations or microsurgery operations. In this paper, we have designed a plasmonic resonant tunable metasurface with barium titanate (BTO) as a nanoscale optical modulator with a high modulation index and high speed. The BTO operated well in the VIS and near-IR ranges, enabling tunable optical devices with zero dispersion and high speed. The results obtained by rigorous finite-element method simulations have shown that the hypothesized device has good potential for fast modulation in related applications, e.g., modulators in nano-optical systems, nano-optical switches and nanosensors.
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19
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Chang KH, Cheng JS, Lu TW, Lee PT. Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing. OPTICS EXPRESS 2018; 26:33215-33225. [PMID: 30645477 DOI: 10.1364/oe.26.033215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk's shape has a great impact on SLR. Small linewidth of 20 nm at an aspect ratio of 1.17, as well as large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations, are achieved experimentally. The enhanced wavelength response of 6.93 nm per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, the strain sensing for elliptical GNA approaches is 5.7 times greater than that for circular GNA.
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20
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Li W, Xu J, Zhou Q, Wang S, Feng Z, Hu D, Li X, Cao Y. Bidirectional plasmonic coloration with gold nanoparticles by wavelength-switched photoredox reaction. NANOSCALE 2018; 10:21910-21917. [PMID: 30431628 DOI: 10.1039/c8nr05763j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reversible tuning of localized plasmon resonance that is supported by nanometric-sized metal particles holds potentially huge benefits in terms of manipulating light for widespread photonic applications. Although the practice of altering the frequency and the amplitude of plasmon resonance on gold nanoparticles is relatively well established, dynamic tuning by all-optical approaches for coloration has long been hindered due to limited implementation approaches with which gold nanomaterials can be photosynthetically manipulated. Here, we develop a wavelength-switched photoredox approach and demonstrate bidirectional tuning of the plasmonic resonance of crystalline gold nanoparticles for reversible surface-plasmon-resonance-based coloration. The reversible plasmonic resonance control is achieved by a combination of photoreduction of gold ions and photooxidation of gold nanorods by switching the illumination between UV and near-UV-Vis light, respectively. As one example, the plasmon resonance peak of gold nanorods is reversibly tuned between 630 and 660 nm by switching the light wavelengths. Utilizing wavelength-switchable photoredox reactions, we demonstrate reversible color patterning by mask illuminating a gold nanorod sample solution. This approach offers not only an easy-to-implement method for realizing non-contact modulating plasmon-resonance based colors, but also new opportunities for reversibly tuning local plasmon resonance by all-optically shaping single nanoparticles. This holds great potential for a wide range of applications, including active-substrate-based surface-enhanced Raman scattering (SERS), erasable optical data storage and dynamic laser color printing, among others.
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Affiliation(s)
- Wanyi Li
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China.
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21
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Recent Advances in Tunable and Reconfigurable Metamaterials. MICROMACHINES 2018; 9:mi9110560. [PMID: 30715059 PMCID: PMC6267285 DOI: 10.3390/mi9110560] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 10/26/2018] [Indexed: 12/17/2022]
Abstract
Metamaterials are composed of nanostructures, called artificial atoms, which can give metamaterials extraordinary properties that cannot be found in natural materials. The nanostructures themselves and their arrangements determine the metamaterials’ properties. However, a conventional metamaterial has fixed properties in general, which limit their use. Thus, real-world applications of metamaterials require the development of tunability. This paper reviews studies that realized tunable and reconfigurable metamaterials that are categorized by the mechanisms that cause the change: inducing temperature changes, illuminating light, inducing mechanical deformation, and applying electromagnetic fields. We then provide the advantages and disadvantages of each mechanism and explain the results or effects of tuning. We also introduce studies that overcome the disadvantages or strengthen the advantages of each classified tunable metamaterial.
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22
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A facile synthesis of Au-nanoparticles decorated PbI 2 single crystalline nanosheets for optoelectronic device applications. Sci Rep 2018; 8:13806. [PMID: 30218065 PMCID: PMC6138657 DOI: 10.1038/s41598-018-32038-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/31/2018] [Indexed: 11/24/2022] Open
Abstract
This research communication presents a rapid and facile microwave-assisted synthesis of single crystalline nanosheets (SCNSs) of hexagonal lead iodide (PbI2) decorated with Au nanoparticles, a potential optoelectronics material. Homogeneous low dimensional AuNP decoration in PbI2 resulted in a new absorption band at ~604 nm and a shift in band gap from 3.23 to 3.00 eV. The significant enhancement of photoluminescent (PL) intensity observed in the AuNP-PbI2 SCNSs is attributed to the coupling of the localized surface plasmon resonanzce of AuNP leading to improved excitation and emission rates of PbI2-SCNSs in the region of the localized electromagnetic field. The Au-PbI2 SCNSs display a compelling increment in photoconductivity, and its fabricated photodetector showed a stable and switchable photo-response. Due to ease of synthesis and enhanced photoconductivity along with appealing PL features, Au-PbI2 SCNS has the potential to be used as a material of choice when fabricating an optoelectronic devices of high performance.
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23
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Laible F, Gollmer DA, Dickreuter S, Kern DP, Fleischer M. Continuous reversible tuning of the gap size and plasmonic coupling of bow tie nanoantennas on flexible substrates. NANOSCALE 2018; 10:14915-14922. [PMID: 30044459 DOI: 10.1039/c8nr03575j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
As a multifunctional device for sensing experiments and fundamental research, tailor-made plasmonic nanostructures with continuously tunable resonances are created by preparing bow tie-shaped nanostructures on a flexible substrate. The bow ties are fabricated by electron beam lithography on a chromium sacrificial layer and transferred to a polydimethylsiloxane (PDMS) substrate. The structures on PDMS are analyzed by reflection dark-field spectroscopy and scanning electron microscopy. Dark-field spectra of individual nano-antennas are obtained while the substrate is relaxed, and while strain is applied and the substrate is elastically stretched. Depending on the alignment of the bow ties relative to the direction of the strain, the deformation of the substrates leads to an increase or decrease of the nanostructure gaps, and therefore to a fully reversible decrease or increase of the antenna coupling, respectively. The continuous change in coupling is visible as a blue-shift in the resonance of the coupling mode for increasing gap widths, and a red-shift for decreasing gap widths. This configuration offers interesting perspectives for molecular transport and sensing investigations under variable coupling conditions as well as for tunable SERS substrates and optical strain sensor applications. In particular, very narrow gaps are within reach in the transversal configuration.
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Affiliation(s)
- Florian Laible
- Institute for Applied Physics, University of Tübingen, Auf der Morgenstelle 10, 72076 Tübingen, Germany.
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24
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Shao L, Zhuo X, Wang J. Advanced Plasmonic Materials for Dynamic Color Display. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704338. [PMID: 29125645 DOI: 10.1002/adma.201704338] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/02/2017] [Indexed: 05/12/2023]
Abstract
Plasmonic structures exhibit promising applications in high-resolution and durable color generation. Research on advanced hybrid plasmonic materials that allow dynamically reconfigurable color control has developed rapidly in recent years. Some of these results may give rise to practically applicable reflective displays in living colors with high performance and low power consumption. They will attract broad interest from display markets, compared with static plasmonic color printing, for example, in applications such as digital signage, full-color electronic paper, and electronic device screens. In this progress report, the most promising recent examples of utilizing advanced plasmonic materials for the realization of dynamic color display are highlighted and put into perspective. The performances, advantages, and disadvantages of different technologies are discussed, with emphasis placed on both the potential and possible limitations of various hybrid materials for dynamic plasmonic color display.
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Affiliation(s)
- Lei Shao
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Xiaolu Zhuo
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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25
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Liu X, Huang Z, Zhu C, Wang L, Zang J. Out-of-Plane Designed Soft Metasurface for Tunable Surface Plasmon Polariton. NANO LETTERS 2018; 18:1435-1441. [PMID: 29257697 DOI: 10.1021/acs.nanolett.7b05190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Reliable and repeatable tunability gives functional diversity for reconfigurable plasmonics devices, while reversible and large mechanical deformation enabled by soft materials provides a new way for the global or partial regulation of metadevices. Here, we demonstrate a soft metasurface with an out-of-plane design for tuning the energy of surface plasmon polaritons (SPPs) bloch wave using theory, simulation, and experiments. Our metasurface is composed of two-layered gold nanoribbon arrays (2GNRs) on a soft substrate. The out-of-plane coupling mechanism is systematically analyzed in terms of separation height effect. Moreover, by harnessing mechanical deformation, continuously tunable plasmonic resonance has been achieved in the visible and near-infrared ranges. We further studied the angle-dependent reflection spectra of our metastructure. Compared with its planar counterpart, our soft and two-layered metastructure exhibits diverse tunability and significant field enhancement by out-of-plane interactions. Our approach in designing soft metasurface with out-of-plane structures can be extended to more-complex photonic devices and finds prominent applications such as biosensing, high-density plasmonic circuits, surface-enhanced luminescence, and surface-enhanced Raman scattering.
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Affiliation(s)
- Xin Liu
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics and ‡Innovation Institute, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Zhao Huang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics and ‡Innovation Institute, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Chengkai Zhu
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics and ‡Innovation Institute, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Li Wang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics and ‡Innovation Institute, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Jianfeng Zang
- School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics and ‡Innovation Institute, Huazhong University of Science and Technology , Wuhan 430074, China
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26
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Kim J, Carnemolla EG, DeVault C, Shaltout AM, Faccio D, Shalaev VM, Kildishev AV, Ferrera M, Boltasseva A. Dynamic Control of Nanocavities with Tunable Metal Oxides. NANO LETTERS 2018; 18:740-746. [PMID: 29283583 DOI: 10.1021/acs.nanolett.7b03919] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Fabry-Pérot metal-insulator-metal (MIM) nanocavities are widely used in nanophotonic applications due to their extraordinary electromagnetic properties and deeply subwavelength dimensions. However, the spectral response of nanocavities is usually controlled by the spatial separation between the two reflecting mirrors and the spacer's refractive index. Here, we demonstrate static and dynamic control of Fabry-Pérot nanocavities by inserting a plasmonic metasurface, as a passive element, and a gallium doped-zinc oxide (Ga:ZnO) layer as a dynamically tunable component within the nanocavities' spacer. Specifically, by changing the design of the silver (Ag) metasurface one can "statically" tailor the nanocavity response, tuning the resonance up to 200 nm. To achieve the dynamic tuning, we utilize the large nonlinear response of the Ga:ZnO layer near the epsilon near zero wavelength to enable effective subpicosecond (<400 fs) optical modulation (80%) at reasonably low pump fluence levels (9 mJ/cm2). We demonstrate a 15 nm red shift of a near-infrared Fabry-Pérot resonance (λ ≅ 1.16 μm) by using a degenerate pump probe technique. We also study the carrier dynamics of Ga:ZnO under intraband photoexcitation via the electronic band structure calculated from first-principles density functional method. This work provides a versatile approach to design metal nanocavities by utilizing both the phase variation with plasmonic metasurfaces and the strong nonlinear response of metal oxides. Tailorable and dynamically controlled nanocavities could pave the way to the development of the next generation of ultrafast nanophotonic devices.
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Affiliation(s)
- Jongbum Kim
- School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
- Institute for Research in Electronics and Applied Physics, University of Maryland , College Park, Maryland 20742, United States
| | - Enrico G Carnemolla
- Institute of Photonics and Quantum Sciences, Heriot-Watt University , SUPA, Edinburg, Scotland EH14 4AS, United Kingdom
| | - Clayton DeVault
- Department of Physics and Astronomy and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47909, United States
| | - Amr M Shaltout
- School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
| | - Daniele Faccio
- Institute of Photonics and Quantum Sciences, Heriot-Watt University , SUPA, Edinburg, Scotland EH14 4AS, United Kingdom
| | - Vladimir M Shalaev
- School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
| | - Alexander V Kildishev
- School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
| | - Marcello Ferrera
- Institute of Photonics and Quantum Sciences, Heriot-Watt University , SUPA, Edinburg, Scotland EH14 4AS, United Kingdom
| | - Alexandra Boltasseva
- School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
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27
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Wilson WM, Stewart JW, Mikkelsen MH. Surpassing Single Line Width Active Tuning with Photochromic Molecules Coupled to Plasmonic Nanoantennas. NANO LETTERS 2018; 18:853-858. [PMID: 29284087 DOI: 10.1021/acs.nanolett.7b04109] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Active plasmonic nanostructures with tunable resonances promise to enable smart materials with multiple functionalities, on-chip spectral-based imaging and low-power optoelectronic devices. A variety of tunable materials have been integrated with plasmonic structures, however, the tuning range in the visible regime has been limited to less than the line width of the resonance resulting in small on/off ratios. Here we demonstrate dynamic tuning of plasmon resonances up to 71 nm through multiple cycles by incorporating photochromic molecules into plasmonic nanopatch antennas. Exposure to ultraviolet (UV) light switches the molecules into a photoactive state enabling dynamic control with on/off ratios up to 9.2 dB and a tuning figure of merit up to 1.43, defined as the ratio between the spectral shift and the initial line width of the plasmonic resonance. Moreover, the physical mechanisms underlying the large spectral shifts are elucidated by studying over 40 individual nanoantennas with fundamental resonances from 550 to 720 nm revealing good agreement with finite-element simulations.
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Affiliation(s)
- Wade M Wilson
- Center for Metamaterials and Integrated Plasmonics, ‡Department of Electrical and Computer Engineering, and §Department of Physics, Duke University , Durham, North Carolina 27708, United States
| | - Jon W Stewart
- Center for Metamaterials and Integrated Plasmonics, ‡Department of Electrical and Computer Engineering, and §Department of Physics, Duke University , Durham, North Carolina 27708, United States
| | - Maiken H Mikkelsen
- Center for Metamaterials and Integrated Plasmonics, ‡Department of Electrical and Computer Engineering, and §Department of Physics, Duke University , Durham, North Carolina 27708, United States
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28
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Rankin A, McGarry S. A flexible pressure responsive device based on the interaction between silver nanoparticles and an aluminum reflector. NANOTECHNOLOGY 2018; 29:015503. [PMID: 29095144 DOI: 10.1088/1361-6528/aa97bd] [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
The unique and tunable optical properties of metal nanoparticles have attracted intense and sustained academic attention in recent years. In tandem with the demand for low-cost responsive materials, one particular topic of interest is the development of mechanically responsive device structures. This work describes the design, fabrication, and testing of a mechanically responsive plasmonic device structure that has been integrated onto a standard commercial plastic substrate. With a low actuation force and a visually perceivable color shift, this device would be attractive for applications requiring responsive features that can be activated by the human hand.
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Affiliation(s)
- Alasdair Rankin
- Carleton University, Department of Electronics, Ottawa, Canada
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29
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Affiliation(s)
- Nina Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Xiaolu Zhuo
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen 518057, China
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30
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Leng H, Szychowski B, Daniel MC, Pelton M. Dramatic Modification of Coupled-Plasmon Resonances Following Exposure to Electron Beams. J Phys Chem Lett 2017; 8:3607-3612. [PMID: 28722415 DOI: 10.1021/acs.jpclett.7b01601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Studies of the plasmon resonances in individual and coupled metal nanoparticles often involve imaging of the nanostructures of interest in an electron microscope. We show that this process can dramatically modify the optical spectra of coupled plasmonic nanoparticles, illustrated here with the case of gold nanorod-nanosphere dimers. The spectral changes are due to the thin, partially conductive carbonaceous layer that deposits onto the particles during imaging. These changes are particularly significant for coupled nanoparticles with subnanometer interparticle gaps but have largely been neglected in previous studies of such structures, including studies intended to probe quantum-mechanical effects in plasmon coupling. Accounting for the effects of the carbonaceous layer will lead to a more accurate understanding of such systems.
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Affiliation(s)
- Haixu Leng
- Department of Physics, University of Maryland, Baltimore County , Baltimore, Maryland 21250, United States
| | - Brian Szychowski
- Department of Chemistry and Biochemistry, University of Maryland, Baltimore County , Baltimore, Maryland 21250, United States
| | - Marie-Christine Daniel
- Department of Chemistry and Biochemistry, University of Maryland, Baltimore County , Baltimore, Maryland 21250, United States
| | - Matthew Pelton
- Department of Physics, University of Maryland, Baltimore County , Baltimore, Maryland 21250, United States
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31
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Chen X, Chen YH, Qin J, Zhao D, Ding B, Blaikie RJ, Qiu M. Mode Modification of Plasmonic Gap Resonances Induced by Strong Coupling with Molecular Excitons. NANO LETTERS 2017; 17:3246-3251. [PMID: 28394619 DOI: 10.1021/acs.nanolett.7b00858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Plasmonic cavities can be used to control the atom-photon coupling process at the nanoscale, since they provide an ultrahigh density of optical states in an exceptionally small mode volume. Here we demonstrate strong coupling between molecular excitons and plasmonic resonances (so-called plexcitonic coupling) in a film-coupled nanocube cavity, which can induce profound and significant spectral and spatial modifications to the plasmonic gap modes. Within the spectral span of a single gap mode in the nanocube-film cavity with a 3 nm wide gap, the introduction of narrow-band J-aggregate dye molecules not only enables an anticrossing behavior in the spectral response but also splits the single spatial mode into two distinct modes that are easily identified by their far-field scattering profiles. Simulation results confirm the experimental findings, and the sensitivity of the plexcitonic coupling is explored using digital control of the gap spacing. Our work opens up a new perspective to study the strong coupling process, greatly extending the functionality of nanophotonic systems, with the potential to be applied in cavity quantum electrodynamic systems.
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Affiliation(s)
- Xingxing Chen
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Yu-Hui Chen
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Otago , P.O. Box 56, Dunedin 9016, New Zealand
| | - Jian Qin
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Ding Zhao
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Boyang Ding
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Otago , P.O. Box 56, Dunedin 9016, New Zealand
| | - Richard J Blaikie
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Otago , P.O. Box 56, Dunedin 9016, New Zealand
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University , Hangzhou 310027, China
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32
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Mode Coupling Properties of the Plasmonic Dimers Composed of Graphene Nanodisks. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7040359] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Dutta-Gupta S, Dabidian N, Kholmanov I, Belkin MA, Shvets G. Electrical tuning of the polarization state of light using graphene-integrated anisotropic metasurfaces. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2017; 375:rsta.2016.0061. [PMID: 28219996 PMCID: PMC5321826 DOI: 10.1098/rsta.2016.0061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/22/2016] [Indexed: 06/06/2023]
Abstract
Plasmonic metasurfaces have been employed for moulding the flow of transmitted and reflected light, thereby enabling numerous applications that benefit from their ultra-thin sub-wavelength format. Their appeal is further enhanced by the incorporation of active electro-optic elements, paving the way for dynamic control of light's properties. In this paper, we realize a dynamic polarization state generator using a graphene-integrated anisotropic metasurface (GIAM) that converts the linear polarization of the incident light into an elliptical one. This is accomplished by using an anisotropic metasurface with two principal polarization axes, one of which possesses a Fano-type resonance. A gate-controlled single-layer graphene integrated with the metasurface was employed as an electro-optic element controlling the phase and intensity of light polarized along the resonant axis of the GIAM. When the incident light is polarized at an angle to the resonant axis of the metasurface, the ellipticity of the reflected light can be dynamically controlled by the application of a gate voltage. Thus accomplished dynamic polarization control is experimentally demonstrated and characterized by measuring the Stokes polarization parameters. Large changes of the ellipticity and the tilt angle of the polarization ellipse are observed. Our measurements show that the tilt angle can be changed from positive values through zero to negative values while keeping the ellipticity constant, potentially paving the way to rapid ellipsometry and other characterization techniques requiring fast polarization shifting.This article is part of the themed issue 'New horizons for nanophotonics'.
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Affiliation(s)
- Shourya Dutta-Gupta
- Department of Physics, and Center for Nano and Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA
| | - Nima Dabidian
- Department of Physics, and Center for Nano and Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA
| | - Iskandar Kholmanov
- Department of Mechanical Engineering, and Materials Science Program, University of Texas at Austin, Austin, TX 78712, USA
- CNR-INO, Sensor Lab, University of Brescia, via Branze 45, 25123 Brescia, Italy
| | - Mikhail A Belkin
- Department of Electrical and Computer Engineering, Microelectronics Research Center, University of Texas at Austin, 10100 Burnet Road, Austin, TX 78758, USA
| | - Gennady Shvets
- Department of Physics, and Center for Nano and Molecular Science and Technology, University of Texas at Austin, Austin, TX 78712, USA
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA
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34
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Marin BC, Liu J, Aklile E, Urbina AD, Chiang ASC, Lawrence N, Chen S, Lipomi DJ. SERS-enhanced piezoplasmonic graphene composite for biological and structural strain mapping. NANOSCALE 2017; 9:1292-1298. [PMID: 28055038 PMCID: PMC5266539 DOI: 10.1039/c6nr09005b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Thin-film optical strain sensors have the ability to map small deformations with spatial and temporal resolution and do not require electrical interrogation. This paper describes the use of graphene decorated with metallic nanoislands for sensing of tensile deformations of less than 0.04% with a resolution of less than 0.002%. The nanoisland-graphene composite films contain gaps between the nanoislands, which when functionalized with benzenethiolate behave as hot spots for surface-enhanced Raman scattering (SERS). Mechanical strain increases the sizes of the gaps; this increase attenuates the electric field, and thus attenuates the SERS signal. This compounded, SERS-enhanced "piezoplasmonic" effect can be quantified using a plasmonic gauge factor, and is among the most sensitive mechanical sensors of any type. Since the graphene-nanoisland films are both conductive and optically active, they permit simultaneous electrical stimulation of myoblast cells and optical detection of the strains produced by the cellular contractions.
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Affiliation(s)
- Brandon C Marin
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Justin Liu
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Eden Aklile
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Armando D Urbina
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Andrew S-C Chiang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Natalie Lawrence
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Shaochen Chen
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Darren J Lipomi
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
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35
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Liu W, Shen Y, Xiao G, She X, Wang J, Jin C. Mechanically tunable sub-10 nm metal gap by stretching PDMS substrate. NANOTECHNOLOGY 2017; 28:075301. [PMID: 28074781 DOI: 10.1088/1361-6528/aa5366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Manipulating light in sub-10 nm or subnanometer metal nanogaps is crucial to study the strong interaction between electromagnetic waves and matters. However, the fabrication of metallic nanogaps with precisely controlled size and high-throughput still remains a challenge. Here, we developed an approach to actively control the gap distance between adjacent metal nanoparticles from 140 nm to sub-10 nm or even 0 nm via mechanical stretching process. To demonstrate this method, we manufactured the gold disk arrays in a square lattice on the polydimethylsiloxane (PDMS) substrate through interference lithography and gold deposition, and sub-10 nm interparticle gap was achieved as exerting a strain of 100% to the PDMS substrate. Transmission spectra show a remarkable red shift of the dipole resonance with narrowing gap from 140 nm to sub-10 nm. Importantly, a universal scaling law between the gap distance in nanoscale and the stretching amount of PDMS substrate in macroscopic scale were demonstrated experimentally and theoretically. Our method can tune the gap distance continuously and reversibly, suggesting potential applications in surface-enhanced Raman scattering, single photon emitter and quantum tunneling of electric charge.
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Affiliation(s)
- Wenjie Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
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36
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Huang Y, Li W, Qin M, Zhou H, Zhang X, Li F, Song Y. Printable Functional Chips Based on Nanoparticle Assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1503339. [PMID: 28102576 DOI: 10.1002/smll.201503339] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/04/2016] [Indexed: 05/18/2023]
Abstract
With facile manufacturability and modifiability, impressive nanoparticles (NPs) assembly applications were performed for functional patterned devices, which have attracted booming research attention due to their increasing applications in high-performance optical/electrical devices for sensing, electronics, displays, and catalysis. By virtue of easy and direct fabrication to desired patterns, high throughput, and low cost, NPs assembly printing is one of the most promising candidates for the manufacturing of functional micro-chips. In this review, an overview of the fabrications and applications of NPs patterned assembly by printing methods, including inkjet printing, lithography, imprinting, and extended printing techniques is presented. The assembly processes and mechanisms on various substrates with distinct wettabilities are deeply discussed and summarized. Via manipulating the droplet three phase contact line (TCL) pinning or slipping, the NPs contracted in ink are controllably assembled following the TCL, and generate novel functional chips and correlative integrate devices. Finally, the perspective of future developments and challenges is presented and widely exhibited.
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Affiliation(s)
- Yu Huang
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
| | - Wenbo Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
- University of the Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Meng Qin
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
- University of the Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Haihua Zhou
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
| | - Xingye Zhang
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
| | - Fengyu Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street No. 2, 100190, Beijing, PR China
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37
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Yang A, Hryn AJ, Bourgeois MR, Lee WK, Hu J, Schatz GC, Odom TW. Programmable and reversible plasmon mode engineering. Proc Natl Acad Sci U S A 2016; 113:14201-14206. [PMID: 27911819 PMCID: PMC5167184 DOI: 10.1073/pnas.1615281113] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Plasmonic nanostructures with enhanced localized optical fields as well as narrow linewidths have driven advances in numerous applications. However, the active engineering of ultranarrow resonances across the visible regime-and within a single system-has not yet been demonstrated. This paper describes how aluminum nanoparticle arrays embedded in an elastomeric slab may exhibit high-quality resonances with linewidths as narrow as 3 nm at wavelengths not accessible by conventional plasmonic materials. We exploited stretching to improve and tune simultaneously the optical response of as-fabricated nanoparticle arrays by shifting the diffraction mode relative to single-particle dipolar or quadrupolar resonances. This dynamic modulation of particle-particle spacing enabled either dipolar or quadrupolar lattice modes to be selectively accessed and individually optimized. Programmable plasmon modes offer a robust way to achieve real-time tunable materials for plasmon-enhanced molecular sensing and plasmonic nanolasers and opens new possibilities for integrating with flexible electronics.
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Affiliation(s)
- Ankun Yang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - Alexander J Hryn
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - Marc R Bourgeois
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Won-Kyu Lee
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - Jingtian Hu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - George C Schatz
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Teri W Odom
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208;
- Department of Chemistry, Northwestern University, Evanston, IL 60208
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38
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Li Z, Jiang S, Huo Y, Liu M, Yang C, Zhang C, Liu X, Sheng Y, Li C, Man B. Controlled-layer and large-area MoS 2 films encapsulated Au nanoparticle hybrids for SERS. OPTICS EXPRESS 2016; 24:26097-26108. [PMID: 27857347 DOI: 10.1364/oe.24.026097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, a facile and effective method for controlled-layer and large-area MoS2 films encapsulated Au nanoparticle hybrids is developed. With accurate Ar plasma treatment time control, the large-area MoS2 layers can be obtained from monolayer to trilayer. The fabricated MoS2@Au NPs with higher surface area exhibit excellent Raman enhanced effect for aromatic organic molecules (rhodamine 6G and crystal violet) and achieve the best when the monolayer MoS2@AuNPs was obtained. The limit of detection is found to be as low as 1 × 10-10 M. The MoS2@AuNPs was characterized by SEM, EDS, AFM, Raman spectroscopy, UV-Vis, XRD and HRTEM.
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39
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Hu Y, Xuan Y, Wang X, Deng B, Saei M, Jin S, Irudayaraj J, Cheng GJ. Superplastic Formation of Metal Nanostructure Arrays with Ultrafine Gaps. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:9152-9162. [PMID: 27569692 DOI: 10.1002/adma.201602497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/19/2016] [Indexed: 06/06/2023]
Abstract
Laser shock compression of plasmonic nanoarrays results in ultrafine tunable line-gaps at sub-10 nm scale by collaborative superplastic flow. From molecular dynamics analysis, the metal nanostructures change from crystalline to liquid-like metals, expanding quickly but never fusing together, even when they are very close. This technique enables good tunability of surface plasmon resonances and significantly enhanced local fields.
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Affiliation(s)
- Yaowu Hu
- School of Industrial Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Yi Xuan
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Xiaolei Wang
- Bindley Bioscience Centre, Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, 47907, USA
| | - Biwei Deng
- School of Industrial Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Mojib Saei
- School of Industrial Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Shengyu Jin
- School of Industrial Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Joseph Irudayaraj
- Bindley Bioscience Centre, Purdue Center for Cancer Research, Purdue University, West Lafayette, IN, 47907, USA
| | - Gary J Cheng
- School of Industrial Engineering, Purdue University, West Lafayette, IN, 47907, USA.
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA.
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40
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Ding T, Rudrum AW, Herrmann LO, Turek V, Baumberg JJ. Polymer-assisted self-assembly of gold nanoparticle monolayers and their dynamical switching. NANOSCALE 2016; 8:15864-9. [PMID: 27546585 PMCID: PMC5166565 DOI: 10.1039/c6nr05199e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Dynamic switching of plasmonic monolayers built of gold nanoparticles (AuNPs) is achieved using nano-coatings of poly(isopropyl acrylamide) (PNIPAM). The distance between AuNPs can be dynamically tuned through the repeatable expansion and contraction of the PNIPAM shells at different temperatures, which results in rapid switching of the optical properties of the AuNP monolayer.
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Affiliation(s)
- Tao Ding
- Nanophotonics Centre , Cavendish Laboratory , University of Cambridge , CB3 0HE , UK . ;
| | - Adam W. Rudrum
- Nanophotonics Centre , Cavendish Laboratory , University of Cambridge , CB3 0HE , UK . ;
| | - Lars O. Herrmann
- Nanophotonics Centre , Cavendish Laboratory , University of Cambridge , CB3 0HE , UK . ;
| | - Vladimir Turek
- Nanophotonics Centre , Cavendish Laboratory , University of Cambridge , CB3 0HE , UK . ;
| | - Jeremy J. Baumberg
- Nanophotonics Centre , Cavendish Laboratory , University of Cambridge , CB3 0HE , UK . ;
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41
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Chen KP, Ye SC, Yang CY, Yang ZH, Lee W, Sun MG. Electrically tunable transmission of gold binary-grating metasurfaces integrated with liquid crystals. OPTICS EXPRESS 2016; 24:16815-16821. [PMID: 27464134 DOI: 10.1364/oe.24.016815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Planar photonics using metasurfaces is of great interest because a metasurface can control the flow of light beyond that attainable with natural materials. The resonance wavelength of a binary-grating metasurface is adjustable by changing the width and thickness of the nanostructure. We propose a novel combination of nematic liquid crystals and a binary-grating metasurface with which the diffraction efficiency can be controlled by adjusting the applied voltage.
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Abstract
In this review, we survey recent advances in the field of molecular plasmonics beyond the traditional sensing modality. Molecular plasmonics is explored in the context of the complex interaction between plasmon resonances and molecules and the ability of molecules to support plasmons self-consistently. First, spectroscopic changes induced by the interaction between molecular and plasmonic resonances are discussed, followed by examples of how tuning molecular properties leads to active molecular plasmonic systems. Next, the role of the position and polarizability of a molecular adsorbate on surface-enhanced Raman scattering signals is examined experimentally and theoretically. Finally, we introduce recent research focused on using molecules as plasmonic materials. Each of these examples is intended to highlight the role of molecules as integral components in coupled molecule-plasmon systems, as well as to show the diversity of applications in molecular plasmonics.
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Affiliation(s)
- Andrew J Wilson
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
| | - Katherine A Willets
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
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43
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Ji X, Yang W. Study of chemical processes involved in silver staining of gold nanostructures by Raman scattering. NANOSCALE 2016; 8:9583-9591. [PMID: 27103376 DOI: 10.1039/c6nr01208f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Strong Raman enhancement contributed by "hot spots" in directly fused gold dimers offer a selective and sensitive tool for understanding the surface processes involved in the silver staining of gold nanostructures. These processes include the interactions of cations, effects of surface adsorbed Cl(-) ions, surface replacement of ligands, and reduction of silver ions on the surface of the gold nanocrystals. Results show that in the commonly applied silver staining scheme for gold nanostructures, i.e., the addition of the Raman probe after the deposition of the silver shell, the Raman signals of the probe (p-mercaptobenzoic acid) were weakened greatly, due to the pre-existence of the Cl(-)-Ag(+)-citrate bridges on the surface of the gold. A new scheme was developed for silver deposition after pre-adsorption of the probe, which achieved a Raman enhancement factor as high as ∼5 × 10(8).
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Affiliation(s)
- Xiaohui Ji
- State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
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44
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Zapata Herrera M, Aizpurua J, Kazansky AK, Borisov AG. Plasmon Response and Electron Dynamics in Charged Metallic Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2829-2840. [PMID: 26898378 DOI: 10.1021/acs.langmuir.6b00112] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Using the time-dependent density functional theory, we perform quantum calculations of the electron dynamics in small charged metallic nanoparticles (clusters) of spherical geometry. We show that the excess charge is accumulated at the surface of the nanoparticle within a narrow layer given by the typical screening distance of the electronic system. As a consequence, for nanoparticles in vacuum, the dipolar plasmon mode displays only a small frequency shift upon charging. We obtain a blue shift for positively charged clusters and a red shift for negatively charged clusters, consistent with the change of the electron spill-out from the nanoparticle boundaries. For negatively charged clusters, the Fermi level is eventually promoted above the vacuum level leading to the decay of the excess charge via resonant electron transfer into the continuum. We show that, depending on the charge, the process of electron loss can be very fast, on the femtosecond time scale. Our results are of great relevance to correctly interpret the optical response of the nanoparticles obtained in electrochemistry, and demonstrate that the measured shift of the plasmon resonances upon charging of nanoparticles cannot be explained without account for the surface chemistry and the dielectric environment.
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Affiliation(s)
- Mario Zapata Herrera
- Departamento de Física, Universidad de los Andes , Bogotá D. C., Colombia
- Materials Physics Center CSIC-UPV/EHU and Donostia International Physics Center DIPC, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Javier Aizpurua
- Materials Physics Center CSIC-UPV/EHU and Donostia International Physics Center DIPC, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Andrey K Kazansky
- Materials Physics Center CSIC-UPV/EHU and Donostia International Physics Center DIPC, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Andrei G Borisov
- Institut des Sciences Moléculaires d'Orsay, UMR 8214 CNRS-Université Paris-Sud, Université Paris-Sud , Bât. 351, 91405 Orsay Cedex, France
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Tian L, Liu KK, Fei M, Tadepalli S, Cao S, Geldmeier JA, Tsukruk VV, Singamaneni S. Plasmonic Nanogels for Unclonable Optical Tagging. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4031-41. [PMID: 26812528 DOI: 10.1021/acsami.5b11399] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We demonstrate the fabrication of novel functional gel coatings with randomized physical and chemical patterns that enable dual encoding ability to realize unclonable optical tags. This design is based on swelling-mediated massive reconstruction of an ultrathin responsive gelatinous polymer film uniformly adsorbed with plasmonic nanostructures into a randomized network of interacting folds, resulting in bright electromagnetic hotspots within the folds. We reveal a strong correlation between the topology and near-field electromagnetic field enhancement due to the intimate contact between two plasmonic surfaces within the folds, each of them representing a unique combination of local topography and chemical distribution caused by the formation of electromagnetic hotspots. Because of the efficient trapping of the Raman reporters within the uniquely distributed electromagnetic hotspots, the surface enhanced Raman scattering enhancement from the morphed plasmonic gel was found to be nearly 40 times higher compared to that from the pristine plasmonic gel. Harnessing the nondeterministic nature of the folds, the folded plasmonic gel can be employed as a multidimensional (with dual topo-chemical encoding) optical taggant for prospective anticounterfeiting applications. Such novel optical tags based on the spontaneous folding process are virtually impossible to replicate because of the combination of nondeterministic physical patterns and chemical encoding.
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Affiliation(s)
- Limei Tian
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Max Fei
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Sisi Cao
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Jeffrey A Geldmeier
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
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Huang J, Zhu Y, Liu C, Shi Z, Fratalocchi A, Han Y. Unravelling Thiol's Role in Directing Asymmetric Growth of Au Nanorod-Au Nanoparticle Dimers. NANO LETTERS 2016; 16:617-623. [PMID: 26670659 DOI: 10.1021/acs.nanolett.5b04329] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers.
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Affiliation(s)
- Jianfeng Huang
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Yihan Zhu
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Changxu Liu
- PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, China
| | - Andrea Fratalocchi
- PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Yu Han
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
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Byers CP, Zhang H, Swearer DF, Yorulmaz M, Hoener BS, Huang D, Hoggard A, Chang WS, Mulvaney P, Ringe E, Halas NJ, Nordlander P, Link S, Landes CF. From tunable core-shell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties. SCIENCE ADVANCES 2015; 1:e1500988. [PMID: 26665175 PMCID: PMC4672758 DOI: 10.1126/sciadv.1500988] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 10/28/2015] [Indexed: 05/17/2023]
Abstract
The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles and nanoparticle pairs, we induced equally dramatic, yet reversible, changes in their optical properties. We achieved plasmon tuning by oxidation-reduction chemistry of Ag-AgCl shells on the surfaces of both individual and strongly coupled Au nanoparticle pairs, resulting in extreme but reversible changes in scattering line shape. We demonstrated reversible formation of the charge transfer plasmon mode by switching between capacitive and conductive electronic coupling mechanisms. Dynamic single-particle spectroelectrochemistry also gave an insight into the reaction kinetics and evolution of the charge transfer plasmon mode in an electrochemically tunable structure. Our study represents a highly useful approach to the precise tuning of the morphology of narrow interparticle gaps and will be of value for controlling and activating a range of properties such as extreme plasmon modulation, nanoscopic plasmon switching, and subnanometer tunable gap applications.
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Affiliation(s)
- Chad P. Byers
- Smalley-Curl Institute Applied Physics Program, Rice University, Houston, TX 77005, USA
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Hui Zhang
- Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA
| | - Dayne F. Swearer
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Mustafa Yorulmaz
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | | | - Da Huang
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Anneli Hoggard
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Wei-Shun Chang
- Department of Chemistry, Rice University, Houston, TX 77005, USA
| | - Paul Mulvaney
- School of Chemistry and Bio21 Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Emilie Ringe
- Department of Chemistry, Rice University, Houston, TX 77005, USA
- Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
| | - Naomi J. Halas
- Smalley-Curl Institute Applied Physics Program, Rice University, Houston, TX 77005, USA
- Department of Chemistry, Rice University, Houston, TX 77005, USA
- Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA
- Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
| | - Peter Nordlander
- Smalley-Curl Institute Applied Physics Program, Rice University, Houston, TX 77005, USA
- Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA
- Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
| | - Stephan Link
- Smalley-Curl Institute Applied Physics Program, Rice University, Houston, TX 77005, USA
- Department of Chemistry, Rice University, Houston, TX 77005, USA
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
| | - Christy F. Landes
- Smalley-Curl Institute Applied Physics Program, Rice University, Houston, TX 77005, USA
- Department of Chemistry, Rice University, Houston, TX 77005, USA
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Corresponding author. E-mail:
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Ding T, Mertens J, Sigle DO, Baumberg JJ. Capillary-Force-Assisted Optical Tuning of Coupled Plasmons. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:6457-61. [PMID: 26398913 PMCID: PMC4768643 DOI: 10.1002/adma.201503292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/12/2015] [Indexed: 05/22/2023]
Abstract
An ultrathin (few nanometer) polymer spacer layer is softened by local optical heating and restructured by strong capillary forces, which increase the gap between the plasmonic metal components. This results in a continuous blue-shift of the coupled plasmon from near infrared to visible with a tuning range of >150 nm that can be tightly controlled by adjusting either irradiation time or power.
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Affiliation(s)
- Tao Ding
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Jan Mertens
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Daniel O Sigle
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Jeremy J Baumberg
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
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Jiang N, Ruan Q, Qin F, Wang J, Lin HQ. Switching plasmon coupling through the formation of dimers from polyaniline-coated gold nanospheres. NANOSCALE 2015; 7:12516-12526. [PMID: 26139347 DOI: 10.1039/c5nr02619a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Active modulation of the plasmon coupling in homodimers of polyaniline (PANI)-coated Au nanospheres is achieved by changing the proton-doping state of the PANI shell. Such a PANI-enabled modulation of the plasmon coupling in the dimers gives rise to remarkable spectral shifts, which show an exponential dependence on the interparticle gap distance. For the dimer with a 10 nm PANI shell thickness and a 0.5 nm gap distance, the shift of the stronger scattering peak in response to the active modulation reaches 231 nm. Electrodynamic simulations reveal that the shift of the dipolar bonding plasmon mode dominates the position variation of the stronger scattering peak for the dimers with different gap distances. Moreover, the quadrupolar bonding plasmon mode can be turned on and off by controlling the proton-doping state of the dimers with gap distances of less than ∼3 nm. These results are of high importance for fundamentally understanding the sensitivity of coupled plasmon resonance modes to the dielectric environment, as well as for designing active plasmonic devices with high modulation performances.
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Affiliation(s)
- Nina Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
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Li L, Hutter T, Li W, Mahajan S. Single Nanoparticle-Based Heteronanojunction as a Plasmon Ruler for Measuring Dielectric Thin Films. J Phys Chem Lett 2015; 6:2282-2286. [PMID: 26266605 DOI: 10.1021/acs.jpclett.5b00806] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nondestructive, noninvasive and accurate measurement of thin film thicknesses on dielectric substrates is challenging. In this work a ruler for measuring thin film thicknesses utilizes the heteronanojunction construct formed between a plasmonic nanoparticle and a high refractive index nonplasmonic substrate. The high near-field sensitivity in the nanojunction renders it suitable for measuring the thickness of intervening dielectric thin films. We demonstrate this by controlling the thickness of dielectric spacer layers created by overgrowing SiO2 thin films on commercially available silicon substrates. While Rayleigh (using dark-field) scattering measurements show that the spectral response is well correlated to the thickness of SiO2 spacer layers the distance-dependence is much steeper with surface-enhanced Raman scattering (SERS). Good agreement between 3D simulations and experimental results confirm the plasmon ruler construct's sensitivity to the dielectric thin film spacing. Thus, we postulate that this single nanoparticle based heteronanojunction configuration can serve as a convenient and simple ruler in metrology of thin films as well as a platform for SERS-based detection even in cases where plasmonically active films are not a suitable substrate.
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Affiliation(s)
- Li Li
- †School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- ‡Institute for Life Sciences and Department of Chemistry, Highfield Campus, University of Southampton, Southampton SO17 1BJ, U.K
| | - Tanya Hutter
- §Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Wenwu Li
- ∥Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Sumeet Mahajan
- ‡Institute for Life Sciences and Department of Chemistry, Highfield Campus, University of Southampton, Southampton SO17 1BJ, U.K
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