论文成果
Electric field-induced oscillation of sessile droplets
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  • 论文类型:期刊论文
  • 发表时间:2011-10-01
  • 发表刊物:CHINESE SCIENCE BULLETIN
  • 收录刊物:Scopus、SCIE
  • 文献类型:J
  • 卷号:56
  • 期号:28-29
  • 页面范围:3082-3086
  • ISSN号:1001-6538
  • 关键字:oscillation; sessile droplet; ac electric field; hydrophobic surface
  • 摘要:We report a novel oscillatory behavior of a sessile droplet on a hydrophobic surface. The droplet was placed on an electrode with a hydrophobic surface and close to, but not touching, a second needle-like electrode. The change in the contact angle was observed only when the droplet oscillated. In a traditional electro-wetting experiment, however, the contact angle decreased immediately when an alternating current electric field was applied. In addition, the non-contact mode gave rise to a true sessile condition of the droplet, whose oscillation amplitude was not linearly proportional to the driving voltage but reached a maximum value.

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