Photonics Research, 2018, 6 (5): 05000409, Published Online: Jul. 6, 2018  

Active macroscale visible plasmonic nanorod self-assembled monolayer Download: 867次

Yue Li 1,2,3Jian Li 1,2,3Taixing Huang 1,2,3Fei Huang 1,2,3Jun Qin 1,2,3Lei Bi 1,2,3Jianliang Xie 1,2,3Longjiang Deng 1,2,3,4Bo Peng 1,2,3,*
Author Affiliations
1 National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu 610054, China
2 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
3 Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, University of Electronic Science and Technology of China, Chengdu 610054, China
4 e-mail: denglj@uestc.edu.cn
Abstract
Although plasmonic nanostructure has attracted widespread research interest in recent years, it is still a major challenge to realize large-scale active plasmonic nanostructure operation in the visible optical frequency. Herein, we demonstrate a heterostructure geometry comprising a centimeter-scale Au nanoparticle monolayer and VO2 films, in which the plasmonic peak is inversely tuned between 685 nm and 618 nm by a heating process since the refractive index will change when VO2 films undergo the transition between the insulating phase and the metallic phase. Simultaneously, the phase transition of VO2 films can be improved by plasmonic arrays due to plasmonic enhanced light absorption and the photothermal effect. The phase transition temperature for Au/VO2 films is lower than that for bare VO2 films and can decrease to room temperature under the laser irradiation. For light-induced phase transition of VO2 films, the laser power of Au/VO2 film phase transition is 28.6% lower than that of bare VO2 films. Our work raises the feasibility to use active plasmonic arrays in the visible region.

Yue Li, Jian Li, Taixing Huang, Fei Huang, Jun Qin, Lei Bi, Jianliang Xie, Longjiang Deng, Bo Peng. Active macroscale visible plasmonic nanorod self-assembled monolayer[J]. Photonics Research, 2018, 6(5): 05000409.

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