• Photonics Research
  • Vol. 12, Issue 2, 331 (2024)
Cuiping Ma1, Peng Yu1、*, Zhimin Jing1, Yisong Zhu1, Peihang Li1, Wenhao Wang2, Hongxing Xu3, Yanning Zhang1, Liang Pan1, Tae-Youl Choi4, Arup Neogi1, Alexander O. Govorov5, and Zhiming Wang1
Author Affiliations
  • 1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 2Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
  • 3School of Physics and Technology, Center for Nanoscience and Nanotechnology, Wuhan University, Wuhan 430072, China
  • 4Department of Mechanical Engineering, University of North Texas, Denton, Texas 76207, USA
  • 5Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA
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    DOI: 10.1364/PRJ.509552 Cite this Article Set citation alerts
    Cuiping Ma, Peng Yu, Zhimin Jing, Yisong Zhu, Peihang Li, Wenhao Wang, Hongxing Xu, Yanning Zhang, Liang Pan, Tae-Youl Choi, Arup Neogi, Alexander O. Govorov, Zhiming Wang. Circular polarization-selective optical, photothermal, and optofluidic effects in chiral metasurfaces[J]. Photonics Research, 2024, 12(2): 331 Copy Citation Text show less

    Abstract

    Circular dichroism (CD) is extensively used in various material systems for applications including biological detection, enantioselective catalysis, and chiral separation. This paper introduces a chiral absorptive metasurface that exhibits a circular polarization-selective effect in dual bands—positive and negative CD peaks at short wavelengths and long wavelengths, respectively. Significantly, we uncover that this phenomenon extends beyond the far-field optical response, as it is also observed in the photothermal effect and the dynamics of thermally induced fluid motion. By carefully engineering the metasurface design, we achieve two distinct CD signals with high g factors (1) at the wavelengths of 877 nm and 1045 nm, respectively. The findings presented in this study advance our comprehension of CD and offer promising prospects for enhancing chiral light–matter interactions in the domains of nanophotonics and optofluidics.
    CD=ALCPARCP.

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    g=ALCPARCP(ALCP+ARCP)/2.

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    CDT=ΔTLCPΔTRCP,

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    gT=ΔTLCPΔTRCP(ΔTLCP+ΔTRCP)/2.

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    CDV=VLCPVRCP,

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    gv=VLCPVRCP(VLCP+VRCP)/2,

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    Q=i(qi(r)d3r).

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    tv(r,t)+(v(r,t)·)v(r,t)=ν2v(r,t)+fth(T(r,t)),

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    fth(T)=βgΔT(r,t)uz,

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    Cuiping Ma, Peng Yu, Zhimin Jing, Yisong Zhu, Peihang Li, Wenhao Wang, Hongxing Xu, Yanning Zhang, Liang Pan, Tae-Youl Choi, Arup Neogi, Alexander O. Govorov, Zhiming Wang. Circular polarization-selective optical, photothermal, and optofluidic effects in chiral metasurfaces[J]. Photonics Research, 2024, 12(2): 331
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