首页|Stepwise colloidal lithography toward scalable and various planar chiral metamaterials

Stepwise colloidal lithography toward scalable and various planar chiral metamaterials

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Chiral metamaterials(CMs)composed by arti-ficial chiral resonators have attracted great attentions in the recent decades due to their strong chiroptical resonance and identifiable interaction with chiral materials,facilitating practical applications in chiral biosensing,chiral emission,and display technology.However,the complex geometry of CMs improves the fabrication difficulty and hinders their scalable fabrication for practical applications,espe-cially in the visible and ultraviolet wavelengths.One potential strategy is the colloidal lithography that enables parallel fabrication for scalable and various planar struc-tures.Here,we demonstrate a stepwise colloidal lithogra-phy technique that uses sequential deposition from multiple CMs and expand their variety and complexity.The geometry and optical chirality of building blocks from single deposition are systematically investigated,and their combination enables a significant extension of the range of chiral patterns by multiple-step depositions.This approach resulted in a myriad of complex designs with different characteristic sizes,compositions,and shapes,which are particularly beneficial for the development of nanophotonic materials.In addition,we designed a flexible chiral device based on PDMS,which exhibits a good CD value and excellent stability even after multiple inward and outward bendings.The excellent compatibility to various substrates makes the planar CMs more flexible in practical applica-tions in microfluidic biosensing.

Chiral metamaterialsColloidal lithographyNanophotonicsMetasurfacesPlasmonicsNanofabricationsFlexible devices

Xiu Yang、Yong Liu、Fei-Liang Chen、Qian-Qi Lin、Rohit Chikkaraddy、Shan-Shan Huang、Shi-Lin Xian、Yi-Dong Hou、Jing-Lei Du、Liang-Ping Xia、Chun-Lei Du

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School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China

School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China

Zhuhai Multiscale Optoelectronics Technology Co.,Ltd.,Zhuhai 915060,China

Hybrid Materials for Opto-Electronics Group,Department of Molecules and Materials,MESA+Institute for Nanotechnology,Molecules Center and Center for Brain-Inspired Nano Systems,Faculty of Science and Technology,University of Twente,7500 AE Enschede,The Netherlands

School of Physics and Astronomy,University of Birmingham,Birmingham B15 2TT,UK

College of Physics,Sichuan University,Chengdu 610065,China

Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems,Yangtze Normal University,Chongqing 408100,China

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International Science and Technology Innovation Cooperation of Sichuan Province国家自然科学基金International Visiting Program for Excellent Young Scholars of SCUTenure Track program of the University of Twente

21GJHZ02301160422720181504

2024

10.1007/s12598-023-02420-y

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(2)
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