中国物理B ›› 2001, Vol. 10 ›› Issue (13): 108-110.

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NANOBUBBLES AT THE LIQUID/SOLID INTERFACE STUDIED BY ATOMIC FORCE MICROSCOPY

孙洁林1, 萧旭东2, 楼柿涛3, 高剑侠3, 李晓军3, 李光来3, 张益3, 李民乾3, 胡均4   

  1. (1)Bio-X Research Center, Shanghai Jiaotong University, Shanghai 200030, China; (2)Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China; (3)Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China; (4)Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China; Bio-X Research Center, Shanghai Jiaotong University, Shanghai 200030, China
  • 收稿日期:2001-03-28 出版日期:2001-12-25 发布日期:2005-07-07
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 19725415, 19744004, 19890380, and 19875075) and by Chinese Academy of Sciences and Science Committee of Shanghai (Grant Nos. KJ 951-A1-603, KJ 951-A1-409 and ST2-2-16).

NANOBUBBLES AT THE LIQUID/SOLID INTERFACE STUDIED BY ATOMIC FORCE MICROSCOPY

Lou Shi-tao (楼柿涛)a, Gao Jian-xia (高剑侠)a, Xiao Xu-dong (萧旭东)b, Li Xiao-jun (李晓军)a, Li Guang-lai (李光来)a, Zhang Yi (张益)a, Li Min-qian (李民乾)a, Sun Jie-lin (孙洁林)c, Hu Jun (胡均)ac   

  1. a Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China; b Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China; c Bio-X Research Center, Shanghai Jiaotong University, Shanghai 200030, China
  • Received:2001-03-28 Online:2001-12-25 Published:2005-07-07
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 19725415, 19744004, 19890380, and 19875075) and by Chinese Academy of Sciences and Science Committee of Shanghai (Grant Nos. KJ 951-A1-603, KJ 951-A1-409 and ST2-2-16).

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摘要： Bubbles on the nanometer scale were produced by a special method on solid surfaces. Atomic Force Microscopy (AFM) was used to detect these bubbles. It shows that nanobubbles can be seen clearly in the interfaces of liquid/graphite and liquid/mica. In AFM images, the nanobubbles appeared like bright spheres. Some of the bubbles kept stable for hours during the experiments. The bubbles were disturbed under high load during AFM imaging. The conformation of the bubbles is influenced by the atomic steps on the graphite substrate. In addition, a shadow was found around the bubbles, which was due to the interactions between a bubble adhered to the tip and a bubble on the substrate.

Abstract: Bubbles on the nanometer scale were produced by a special method on solid surfaces. Atomic Force Microscopy (AFM) was used to detect these bubbles. It shows that nanobubbles can be seen clearly in the interfaces of liquid/graphite and liquid/mica. In AFM images, the nanobubbles appeared like bright spheres. Some of the bubbles kept stable for hours during the experiments. The bubbles were disturbed under high load during AFM imaging. The conformation of the bubbles is influenced by the atomic steps on the graphite substrate. In addition, a shadow was found around the bubbles, which was due to the interactions between a bubble adhered to the tip and a bubble on the substrate.

Key words: nanobubble, AFM, mica, graphite

中图分类号: 

  • 0779