中国物理B ›› 2018, Vol. 27 ›› Issue (11): 118104-118104.doi: 10.1088/1674-1056/27/11/118104
• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇 下一篇
Formation and stability of ultrasonic generated bulk nanobubbles
Chen-Ran Mo(莫宸冉), Jing Wang(王菁), Zhou Fang(方舟), Li-Min Zhou(周利民), Li-Juan Zhang(张立娟), Jun Hu(胡钧)
- 1 Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China;
4 School of Physical Science and Technology, Shanghai Tech University, Shanghai 201204, China
Formation and stability of ultrasonic generated bulk nanobubbles
Chen-Ran Mo(莫宸冉)1,2, Jing Wang(王菁)1,2,4, Zhou Fang(方舟)1,2, Li-Min Zhou(周利民)1,2, Li-Juan Zhang(张立娟)1,3, Jun Hu(胡钧)1,3
- 1 Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China;
4 School of Physical Science and Technology, Shanghai Tech University, Shanghai 201204, China
摘要：
Although various and unique properties of bulk nanobubbles have drawn researchers' attention over the last few years, their formation and stabilization mechanism has remained unsolved. In this paper, we use ultrasonic methods to produce bulk nanobubbles in the pure water and give a comprehensive study on the bulk nanobubbles properties and generation. The ultrasonic wave gives rise to constant oscillation in water where positive and negative pressure appears alternately. With the induced cavitation and presence of dissolved air, the bulk nanobubbles formed. “Nanosight” (which is a special instrument that combines dynamic light scattering with nanoparticle tracking analysis) was used to analyze the track and concentration of nanobubbles. Our results show that in our experiment, sufficient bulk nanobubbles were generated and we have proven they are not contaminations. We also found nanobubbles in the ultrasonic water change in both size and concentration with ultrasonic time.
中图分类号: (Nanoscale materials and structures: fabrication and characterization)
- 81.07.-b