Surface acoustic wave-tuned plasmonic resonances in liquid crystal-covered gold nanostructures

Ma, Zongjun1,2; Wang, Zhenming1,2; Cheng, Ming1,2; Kong, Delai1,2; Cai, Wenfeng1,2; Cen, Mengjia1,2; Liu, Jianxun1,2; Luo, Dan1; Liu, Yan Jun1,2

2023-10-01

10.1364/OME.501850

OPTICAL MATERIALS EXPRESS   影响因子和分区

2159-3930

In this work, we propose an acoustically tunable plasmonic device based on liquid crystal (LC)-covered gold nanostructures. By utilizing the standing surface acoustic waves (SSAWs) to realign LC molecules, one can effectively tune the effective refractive index of LCs, and subsequently tune localized surface plasmon resonances (LSPRs) of the gold nanostructures. A 15 nm blue shift of the LSPR peak with the driving voltage of 400 mVpp is experimentally observed. Upon removal of the applied SSAWs, the LC molecules can return to their original orientation, and so does the LSPR peak. Besides the excellent reversibility, this active plasmonic device also features low power consumption and easy integration, which could find many potential applications including switches, modulators, and couplers.

SCI ; EI

英语

第一 ; 通讯

National Key Research and Development Program of China[2022YFA1203700] ; National Natural Science Foundation of China["62075093","62211530039"] ; Guangdong Province Introduction of Innovative RD Team[2017ZT07C071] ; Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20220818100413030] ; Development and Reform Commission of Shenzhen Municipality[XMHT20220114005] ; Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University[KJS2132]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:001106564600001

Optica Publishing Group

20234214916545

Acoustic surface wave devices ; Acoustic waves ; Blue shift ; Gold ; Molecules ; Nanostructures ; Red Shift ; Refractive index ; Surface plasmon resonance

Precious Metals:547.1 ; Light/Optics:741.1 ; Acoustic Waves:751.1 ; Acoustic Devices:752.1 ; Nanotechnology:761 ; Atomic and Molecular Physics:931.3 ; Solid State Physics:933

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr High Resolut Light Field Dis, Shenzhen 518055, Peoples R China

Ma, Zongjun,Wang, Zhenming,Cheng, Ming,et al. Surface acoustic wave-tuned plasmonic resonances in liquid crystal-covered gold nanostructures[J]. OPTICAL MATERIALS EXPRESS,2023,13(10):2935-2943.

Ma, Zongjun.,Wang, Zhenming.,Cheng, Ming.,Kong, Delai.,Cai, Wenfeng.,...&Liu, Yan Jun.(2023).Surface acoustic wave-tuned plasmonic resonances in liquid crystal-covered gold nanostructures.OPTICAL MATERIALS EXPRESS,13(10),2935-2943.

Ma, Zongjun,et al."Surface acoustic wave-tuned plasmonic resonances in liquid crystal-covered gold nanostructures".OPTICAL MATERIALS EXPRESS 13.10(2023):2935-2943.