首页|Exploring van der Waals materials with high anisotropy:geometrical and optical approaches

Exploring van der Waals materials with high anisotropy:geometrical and optical approaches

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The emergence of van der Waals(vdW)materials resulted in the discovery of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless novel phenomena and applications.Such success inspired an intensive search for the highest possible anisotropic properties among vdW materials.Furthermore,the identification of the most promising among the huge family of vdW materials is a challenging quest requiring innovative approaches.Here,we suggest an easy-to-use method for such a survey based on the crystallographic geometrical perspective of vdW materials followed by their optical characterization.Using our approach,we found As2S3 as a highly anisotropic vdW material.It demonstrates high in-plane optical anisotropy that is～20％larger than for rutile and over two times as large as calcite,high refractive index,and transparency in the visible range,overcoming the century-long record set by rutile.Given these benefits,As2S3 opens a pathway towards next-generation nanophotonics as demonstrated by an ultrathin true zero-order quarter-wave plate that combines classical and the Fabry-Pérot optical phase accumulations.Hence,our approach provides an effective and easy-to-use method to find vdW materials with the utmost anisotropic properties.

Aleksandr S.Slavich、Georgy A.Ermolaev、Mikhail K.Tatmyshevskiy、Adilet N.Toksumakov、Olga G.Matveeva、Dmitriy V.Grudinin、Kirill V.Voronin、Arslan Mazitov、Konstantin V.Kravtsov、Alexander V.Syuy、Dmitry M.Tsymbarenko、Mikhail S.Mironov、Sergey M.Novikov、Ivan Kruglov、Davit A.Ghazaryan、Andrey A.Vyshnevyy、Aleksey V.Arsenin、Valentyn S.Volkov、Kostya S.Novoselov

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Moscow Center for Advanced Studies,Kulakova str.20,Moscow 123592,Russia

Emerging Technologies Research Center,XPANCEO,Internet City,Emmay Tower,Dubai,United Arab Emirates

Donostia International Physics Center(DIPC),Donostia/San-Sebastián 20018,Spain

institute of Materials,École Polytechnique Fédérale de Lausanne,1015 Lausanne,Switzerland

Department of Chemistry,Lomonosov Moscow State University,Moscow 119991,Russia

Laboratory of Advanced Functional Materials,Yerevan State University,Yerevan 0025,Armenia

National Graphene Institute(NGI),University of Manchester,Manchester M13 9PL,UK

Department of Materials Science and Engineering,National University of Singapore,Singapore 03-09 EA,Singapore

Institute for Functional Intelligent Materials,National University of Singapore,117544 Singapore,Singapore

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Ministry of Education,SingaporeRoyal Society,UKMinistry of Science and Higher EducationRSFHigher Education and Science Committee of the Ministry of Education,Science,Culture,and Sport of the Republic of ArmeniaM.V.Lomonosov Moscow State University Program of Development

EDUNC-33-18-279-V12RSRP\R\190000075-15-2022-115022-19-0055823RL-2A031

2024

10.1038/s41377-024-01407-3

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(4)
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