Stepwise colloidal lithography toward scalable and various planar chiral metamaterials

Xiu Yang ¹Yong Liu ²Fei-Liang Chen ³Qian-Qi Lin ⁴Rohit Chikkaraddy ⁵Shan-Shan Huang ⁶Shi-Lin Xian ⁶Yi-Dong Hou ⁶Jing-Lei Du ⁶Liang-Ping Xia ⁷Chun-Lei Du⁷

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作者信息

1. 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
2. School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
3. School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
4. 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
5. School of Physics and Astronomy,University of Birmingham,Birmingham B15 2TT,UK
6. College of Physics,Sichuan University,Chengdu 610065,China
7. Zhuhai Multiscale Optoelectronics Technology Co.,Ltd.,Zhuhai 915060,China;Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems,Yangtze Normal University,Chongqing 408100,China
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Abstract

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.

Key words

Chiral metamaterials/Colloidal lithography/Nanophotonics/Metasurfaces/Plasmonics/Nanofabrications/Flexible devices

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基金项目

International Science and Technology Innovation Cooperation of Sichuan Province(21GJHZ0230)

国家自然科学基金(11604227)

International Visiting Program for Excellent Young Scholars of SCU(20181504)

Tenure Track program of the University of Twente()

出版年

2024

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

被引量1

参考文献量59

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