中国物理B ›› 2021, Vol. 30 ›› Issue (10): 104702-104702.doi: 10.1088/1674-1056/ac229c

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Analysis of natural frequency for imaging interface in liquid lens

Na Xie(谢娜)   

  1. College of Electronic and Optical Engineering and College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
  • 收稿日期:2021-02-11 修回日期:2021-08-19 接受日期:2021-09-01 出版日期:2021-09-17 发布日期:2021-09-30
  • 通讯作者: Na Xie E-mail:xienns@hotmail.com

Analysis of natural frequency for imaging interface in liquid lens

Na Xie(谢娜)   

  1. College of Electronic and Optical Engineering and College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
  • Received:2021-02-11 Revised:2021-08-19 Accepted:2021-09-01 Online:2021-09-17 Published:2021-09-30
  • Contact: Na Xie E-mail:xienns@hotmail.com

摘要: Transmission beam can be modulated at the liquid-liquid interface inside an electrowetting liquid lens. The fluctuation characteristics of the interface has a decisive effect on the beam modulation. A closed cylinder in capillary constant scale is analyzed and the natural frequencies of a flat interface are obtained using capillary wave hydrodynamics. Results in modes 0 and 1 are in good agreement with previous experiments in the literature. The influences of the radius, the height ratio and the height-to-diameter ratio of a liquid lens on the interface eigenfrequencies are analyzed.

关键词: natural frequency, liquid-liquid interface, capillary wave, liquid lens

Abstract: Transmission beam can be modulated at the liquid-liquid interface inside an electrowetting liquid lens. The fluctuation characteristics of the interface has a decisive effect on the beam modulation. A closed cylinder in capillary constant scale is analyzed and the natural frequencies of a flat interface are obtained using capillary wave hydrodynamics. Results in modes 0 and 1 are in good agreement with previous experiments in the literature. The influences of the radius, the height ratio and the height-to-diameter ratio of a liquid lens on the interface eigenfrequencies are analyzed.

Key words: natural frequency, liquid-liquid interface, capillary wave, liquid lens

中图分类号:  (Computational methods in fluid dynamics)

  • 47.11.-j
47.35.-i (Hydrodynamic waves) 42.79.Bh (Lenses, prisms and mirrors) 42.15.Eq (Optical system design)