Optical Materials: Size-Dependent Nonlinear Optical Properties of Atomically Thin Transition Metal Dichalcogenide Nanosheets (Small 6/2015)

A gradient centrifugation method developed by H.‐L. Zhang and co‐workers allows the preparation of atomically thin transition metal dichalcogenide (TMD) samples. Z‐scan measurements show on page 694 that a dispersion of 50–60 nm MoS2 and WS2 nanosheets exhibits reverse saturable absorption, in contr...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2015-02, Vol.11 (6), p.634-634
Main Authors: Zhou, Kai-Ge, Zhao, Min, Chang, Meng-Jie, Wang, Qiang, Wu, Xin-Zhi, Song, Yinglin, Zhang, Hao-Li
Format: Article
Language:English
Subjects:
Dispersions
layered materials
liquid-phase separation
Molybdenum disulfide
Nanostructure
Nanotechnology
nonlinear optical materials
Nonlinearity
Optical materials
Optical properties
structure-property relationships
thin films
Transition metals
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Summary:A gradient centrifugation method developed by H.‐L. Zhang and co‐workers allows the preparation of atomically thin transition metal dichalcogenide (TMD) samples. Z‐scan measurements show on page 694 that a dispersion of 50–60 nm MoS2 and WS2 nanosheets exhibits reverse saturable absorption, in contrast to the saturable absorption of larger samples. Such a size‐dependent nonlinear optical property implies that the same TMD materials can be used in different applications simply by varying their sheet sizes.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201570034