A Facile Method for Precise Layer Number Identification of Two-Dimensional Materials through Optical Images
Optical microscopy is believed to be an efficient method for identifying layer number of two-dimensional 2D materials. However, since illuminants, cameras and their parameters are different from lab to lab, it is impossible to identify layer numbers just by comparing a given optical image with stand...
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| creator | Lei, Jiayu Qu, Jiafan Wang, Peng Jiang, Hu Shi, Hongyan Sun, Xiudong Gao, Bo |
| description | Optical microscopy is believed to be an efficient method for identifying
layer number of two-dimensional 2D materials. However, since illuminants,
cameras and their parameters are different from lab to lab, it is impossible to
identify layer numbers just by comparing a given optical image with standard or
calculated images under standard conditions. Here we reported an image
reconstruction method, converting raw optical images acquired by arbitrary
illuminants and cameras into reconstructed images at specified illuminant and
specified camera. After image reconstruction, the color differences of each
layer number roughly equaled those calculated under specified condition. By
comparing the color differences in reconstructed image with those calculated
under specified condition, the layer numbers of 2D materials in our lab and
published papers, including MoS2, WS2 and WSe2, were ambiguously identified.
This study makes optical microscopy a precise method for identifying layer
numbers of 2D materials on known substrate. |
| doi_str_mv | 10.48550/arxiv.1901.04102 |
| format | Article |
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layer number of two-dimensional 2D materials. However, since illuminants,
cameras and their parameters are different from lab to lab, it is impossible to
identify layer numbers just by comparing a given optical image with standard or
calculated images under standard conditions. Here we reported an image
reconstruction method, converting raw optical images acquired by arbitrary
illuminants and cameras into reconstructed images at specified illuminant and
specified camera. After image reconstruction, the color differences of each
layer number roughly equaled those calculated under specified condition. By
comparing the color differences in reconstructed image with those calculated
under specified condition, the layer numbers of 2D materials in our lab and
published papers, including MoS2, WS2 and WSe2, were ambiguously identified.
This study makes optical microscopy a precise method for identifying layer
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layer number of two-dimensional 2D materials. However, since illuminants,
cameras and their parameters are different from lab to lab, it is impossible to
identify layer numbers just by comparing a given optical image with standard or
calculated images under standard conditions. Here we reported an image
reconstruction method, converting raw optical images acquired by arbitrary
illuminants and cameras into reconstructed images at specified illuminant and
specified camera. After image reconstruction, the color differences of each
layer number roughly equaled those calculated under specified condition. By
comparing the color differences in reconstructed image with those calculated
under specified condition, the layer numbers of 2D materials in our lab and
published papers, including MoS2, WS2 and WSe2, were ambiguously identified.
This study makes optical microscopy a precise method for identifying layer
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layer number of two-dimensional 2D materials. However, since illuminants,
cameras and their parameters are different from lab to lab, it is impossible to
identify layer numbers just by comparing a given optical image with standard or
calculated images under standard conditions. Here we reported an image
reconstruction method, converting raw optical images acquired by arbitrary
illuminants and cameras into reconstructed images at specified illuminant and
specified camera. After image reconstruction, the color differences of each
layer number roughly equaled those calculated under specified condition. By
comparing the color differences in reconstructed image with those calculated
under specified condition, the layer numbers of 2D materials in our lab and
published papers, including MoS2, WS2 and WSe2, were ambiguously identified.
This study makes optical microscopy a precise method for identifying layer
numbers of 2D materials on known substrate.</abstract><doi>10.48550/arxiv.1901.04102</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Materials Science Physics - Optics |
| title | A Facile Method for Precise Layer Number Identification of Two-Dimensional Materials through Optical Images |
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