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Investigation of the dynamic bending properties of MoS(2) thin films by interference colours

A non-contact method for the observation of the elastic deformation of 2D molybdenum disulfide (MoS(2)) thin films using an ordinary optical microscope is reported. A pulsed laser is used to rapidly increase the bending deformation of the MoS(2) thin films via heating. The bending angle of the MoS(2...

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Autores principales: Wang, Peng, Xiao, Si, Li, Xiaohong, Lyu, Bosai, Huang, Yingbao, Cheng, Shubo, Huang, Han, He, Jun, Gao, Yongli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4683454/
https://www.ncbi.nlm.nih.gov/pubmed/26679369
http://dx.doi.org/10.1038/srep18441
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author Wang, Peng
Xiao, Si
Li, Xiaohong
Lyu, Bosai
Huang, Yingbao
Cheng, Shubo
Huang, Han
He, Jun
Gao, Yongli
author_facet Wang, Peng
Xiao, Si
Li, Xiaohong
Lyu, Bosai
Huang, Yingbao
Cheng, Shubo
Huang, Han
He, Jun
Gao, Yongli
author_sort Wang, Peng
collection PubMed
description A non-contact method for the observation of the elastic deformation of 2D molybdenum disulfide (MoS(2)) thin films using an ordinary optical microscope is reported. A pulsed laser is used to rapidly increase the bending deformation of the MoS(2) thin films via heating. The bending angle of the MoS(2) thin films shows high stability, changing only 5% in forty days without external forces. However, the bending angle of the MoS(2) thin films substantially decreases after being wetted with the volatile polar solvent tetrahydrofuran (THF), because of its low surface tension. By removing the nano-Newton scale forces on the MoS(2) thin films, the bending angle increases significantly within 4 minutes, and this feature of the thin films shows great potential for use in the fabrication of micro-force sensors. This is the first attempt to study the mechanical properties of 2D materials by optical methods. Further utilization of industrially manufactured MoS(2) thin films for detecting micro-force qualitatively on the basis of their excellent bending properties would significantly reduce the production costs of micro-force sensors.
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spelling pubmed-46834542015-12-21 Investigation of the dynamic bending properties of MoS(2) thin films by interference colours Wang, Peng Xiao, Si Li, Xiaohong Lyu, Bosai Huang, Yingbao Cheng, Shubo Huang, Han He, Jun Gao, Yongli Sci Rep Article A non-contact method for the observation of the elastic deformation of 2D molybdenum disulfide (MoS(2)) thin films using an ordinary optical microscope is reported. A pulsed laser is used to rapidly increase the bending deformation of the MoS(2) thin films via heating. The bending angle of the MoS(2) thin films shows high stability, changing only 5% in forty days without external forces. However, the bending angle of the MoS(2) thin films substantially decreases after being wetted with the volatile polar solvent tetrahydrofuran (THF), because of its low surface tension. By removing the nano-Newton scale forces on the MoS(2) thin films, the bending angle increases significantly within 4 minutes, and this feature of the thin films shows great potential for use in the fabrication of micro-force sensors. This is the first attempt to study the mechanical properties of 2D materials by optical methods. Further utilization of industrially manufactured MoS(2) thin films for detecting micro-force qualitatively on the basis of their excellent bending properties would significantly reduce the production costs of micro-force sensors. Nature Publishing Group 2015-12-18 /pmc/articles/PMC4683454/ /pubmed/26679369 http://dx.doi.org/10.1038/srep18441 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wang, Peng
Xiao, Si
Li, Xiaohong
Lyu, Bosai
Huang, Yingbao
Cheng, Shubo
Huang, Han
He, Jun
Gao, Yongli
Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title_full Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title_fullStr Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title_full_unstemmed Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title_short Investigation of the dynamic bending properties of MoS(2) thin films by interference colours
title_sort investigation of the dynamic bending properties of mos(2) thin films by interference colours
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4683454/
https://www.ncbi.nlm.nih.gov/pubmed/26679369
http://dx.doi.org/10.1038/srep18441
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