journal article·2022-04

2D Functional Minerals as Sustainable Materials for Magneto‐Optics

Ziyang Huang, Tianshu Lan, Lixin Dai, Xueting Zhao, Zhongyue Wang, Zehao Zhang, Bing Li, Jialiang Li, Jingao Liu, Baofu Ding, Andre K. Geim, Hui‐Ming Cheng, Bilu Liu

Advanced Materials· Volume 34· Issue 16
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Abstract

Abstract Liquid crystal devices using organic molecules are nowadays widely used to modulate transmitted light, but this technology still suffers from relatively weak response, high cost, toxicity and environmental concerns, and cannot fully meet the demand of future sustainable society. Here, an alternative approach to color‐tunable optical devices, which is based on sustainable inorganic liquid crystals derived from 2D mineral materials abundant in nature, is described. The prototypical 2D mineral of vermiculite is massively produced by a green method, possessing size‐to‐thickness aspect ratios of >103, in‐plane magnetization of >10 emu g−1, and an optical bandgap of >3 eV. These characteristics endow 2D vermiculite with sensitive magneto‐birefringence response, been several orders of magnitude larger than organic counterparts, as well as capability of broad‐spectrum modulation. The finding consequently permits the fabrication of various magnetochromic or mechanochromic devices with low or even zero‐energy consumption during operation. This work creates opportunities for the application of sustainable materials in advanced optics.
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Research context

OpenAlex topics: Liquid Crystal Research Advancements · Advanced Fiber Laser Technologies · Porphyrin and Phthalocyanine Chemistry

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shenzhen Geim Graphene Center Tsinghua‐Berkeley Shenzhen Institute Institute of Materials Research Shenzhen International Graduate School Tsinghua University Shenzhen 518055 P. R. China

Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 P. R. China

School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 P. R. China

State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 P. R. China

Faculty of Materials Science and Engineering Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 P. R. China

Department of Physics and Astronomy University of Manchester Manchester M13 9PL U.K.

Advanced Technology Institute University of Surrey Guildford GU2 7XH U.K.

Funding

National Natural Science Foundation of China

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