Optical identification of single- and few-layer MoS 2 sheets

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

doi:10.1002/smll.201101958

Optical identification of single- and few-layer MoS ₂ sheets

Hai Li, Gang Lu, Zongyou Yin, Qiyuan He, Hong Li, Qing Zhang, Hua Zhang

Nanyang Technological University

科研成果: 期刊稿件 › 文章 › 同行评审

307 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	682-686
页数	5
期刊	Small
卷	8
期	5
DOI	https://doi.org/10.1002/smll.201101958
出版状态	已出版 - 12 3月 2012
已对外发布	是

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10.1002/smll.201101958

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abstract = "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.",

keywords = "Raman spectroscopy, atomic force microscopy, chalcogenides, layered materials, optical imaging",

author = "Hai Li and Gang Lu and Zongyou Yin and Qiyuan He and Hong Li and Qing Zhang and Hua Zhang",

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AU - Li, Hai

AU - Lu, Gang

AU - Yin, Zongyou

AU - He, Qiyuan

AU - Li, Hong

AU - Zhang, Qing

AU - Zhang, Hua

PY - 2012/3/12

Y1 - 2012/3/12

N2 - 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.

AB - 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.

KW - Raman spectroscopy

KW - atomic force microscopy

KW - chalcogenides

KW - layered materials

KW - optical imaging

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JF - Small

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Optical identification of single- and few-layer MoS 2 sheets

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Optical identification of single- and few-layer MoS ₂ sheets