吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (2): 498-503.doi: 10.13229/j.cnki.jdxbgxb201702021

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Microfluidic liquid color-changing glasses controlled by valveless piezoelectric micro-pump

ZHANG Min, LI Song-jing, CAI Shen   

  1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2016-04-02 Online:2017-03-20 Published:2017-03-20

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Abstract: In order to comfort and protect human eyes in an environment with strong lights using color-changing glasses, a microfluidic liquid color-changing glasses is presented. Instead of traditional mechanical machining, soft lithography technology is applied for the fabrication of the color-changing layer made of transparent polymer polydimethylsiloxane (PDMS). Surface modification treatment is used for realizing irreversibly bonding of PDMS color-changing layer with substrate lens (glass/optical resin) to form liquid color-changing lens with closed microfluidic channels. A valveless piezoelectric micro-pump is designed and micromachined, which is used to control the liquid circulation in the channel on the lens to realize color-changing function of the glasses. The color-changing response times of the glasses under different voltage amplitudes and frequencies are tested by experiments. Compared with conventional solid photochromic glasses, the microfluidic liquid color-changing glasses controlled by valveless piezoelectric micro-pump show faster response, higher controllability and better reversibility.

Key words: turn and control of fluid, microfluidic, liquid colour-changing glasses, valveless piezoelectric micro-pump, soft lithography

CLC Number: 

  • TH137
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