Optical Identification of Single‐ and Few‐Layer MoS 2  Sheets | Zendy

Li Hai | Zendy; Lu Gang | Zendy; Yin Zongyou | Zendy; He Qiyuan | Zendy; Li Hong | Zendy; Zhang Qing | Zendy; Zhang Hua | Zendy

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Optical Identification of Single‐ and Few‐Layer MoS 2 Sheets

Author(s) -

Li Hai,

Lu Gang,

Yin Zongyou,

He Qiyuan,

Li Hong,

Zhang Qing,

Zhang Hua

Publication year - 2012

Publication title -

small

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.785

H-Index - 236

eISSN - 1613-6829

pISSN - 1613-6810

DOI - 10.1002/smll.201101958

Subject(s) - materials science , identification (biology) , layer (electronics) , nanotechnology , optoelectronics , biology , botany

A simple approach is developed to identify the layer number of 2D MoS 2 sheets. By using an optical imaging method combined with image analysis software, a high‐contrast image of the MoS 2 sheets can be extracted from the red (R) channel of the color optical microscopy image. The value of the intensity difference in the grayscale image of the R channel between MoS 2 sheets (1–3 layers) and the SiO 2 substrate can be used to identify the layer number of the sheet.

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