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
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.
. [J]. 中国物理快报, 2015, 32(4): 46801-046801.
MA Wang-Guo, ZHANG Meng, NIE Xue-Chuan, WANG Chun-Lei, FANG Hai-Ping, HE Meng-Dong, ZHANG Li-Juan. Controllable Nucleation of Nanobubbles at a Modified Graphene Surface. Chin. Phys. Lett., 2015, 32(4): 46801-046801.
2015, Vol. 32 
