| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Controllable Nucleation of Nanobubbles at a Modified Graphene Surface |
| MA Wang-Guo1,2, ZHANG Meng2, NIE Xue-Chuan2,4, WANG Chun-Lei2, FANG Hai-Ping2, HE Meng-Dong1**, ZHANG Li-Juan2,3** |
1Institute of Mathematics and Physics, Central South University of Forestry and Technology, Changsha 410004
2Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800
3Shanghai Synchrotron Radiation Facility, Shanghai 201204
4University of Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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MA Wang-Guo, ZHANG Meng, NIE Xue-Chuan et al 2015 Chin. Phys. Lett. 32 046801 |
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Abstract The properties of nanoscale gas bubbles at the solid/water interface have been investigated for more than 20 years. However, the stability of nanobubbles remains far from being understood. How to control the formation of nanobubbles is the key issue for understanding their long lifetime. In this work, using molecular dynamics simulations we modify the substrate (graphene) with charge dipoles in which the local properties of the surface could be changed. Nanobubbles could be stabilized on the local hydrophobic area and modified area with the hydrophilic boundary where gas nuclei are deposited beforehand. Those results provide two methods to control the nucleation of gas nanobubbles and fix them on a target area.
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Received: 22 December 2014
Published: 30 April 2015
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| PACS: |
68.08.-p
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(Liquid-solid interfaces)
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31.15.xv
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(Molecular dynamics and other numerical methods)
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02.70.Bf
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(Finite-difference methods)
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