文章基本信息

标题：Polarization-dependent optical absorption of MoS2 for refractive index sensing
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作者：Yang Tan ; Ruiyun He ; Chen Cheng 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：4
期号：1
DOI：10.1038/srep07523
语种：English
出版社：Springer Nature
摘要：As a noncentrosymmetric crystal with spin-polarized band structure, MoS₂ nanomaterials have attracts increasing attention in many areas such as lithium ion batteries, flexible electronic devices, photoluminescence and valleytronics. The investigation of MoS₂ is mainly focused on the electronics and spintronics instead of optics, which restrict its applications as key elements of photonics. In this work, we demonstrate the first observation of the polarization-dependent optical absorption of the MoS₂ thin film, which is integrated onto an optical waveguide device. With this feature, a novel optical sensor combining MoS₂ thin-film and a microfluidic structure has been constituted to achieve the sensitive monitoring of refractive index. Our work indicates the MoS₂ thin film as a complementary material to graphene for the optical polarizer in the visible light range, and explores a new application direction of MoS₂ nanomaterials for the construction of photonic circuits.