Optoelectronics Letters, Volume. 18, Issue 3, 166(2022)

Electrowetting-driven droplet shrinkage with tunable focus property

Dan LIANG... Rui ZHAO*, Zhongcheng LIANG, Meimei KONG and Tao CHEN |Show fewer author(s)
Author Affiliations
  • Center of Optofluidic Technology, College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunication, Nanjing 210023, China
  • show less

    In this paper, a non-conductive droplet driven by electrowetting (EW) with planar electrode in surrounding fluid is studied. COMSOL is employed to simulate the evolution of droplet shrinkage and the relative experimental setup is established to monitor the evolution of contact angle and height at different voltages. The droplet contracts inward and the corresponding contact angle/height increase when voltage increases. When the voltage ranges from 50 V to 140 V, the variation of the relative contact angles and height reach up to 118.78° and 3.194 mm, respectively. The system of silicon oil and surrounding liquid propylene glycol (PG) acts as a positive lens, whose focal length varies from 87.153 mm to 42.963 mm.

    Tools

    Get Citation

    Copy Citation Text

    LIANG Dan, ZHAO Rui, LIANG Zhongcheng, KONG Meimei, CHEN Tao. Electrowetting-driven droplet shrinkage with tunable focus property[J]. Optoelectronics Letters, 2022, 18(3): 166

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Received: Jul. 9, 2021

    Accepted: Aug. 16, 2021

    Published Online: Jan. 20, 2023

    The Author Email: Rui ZHAO (zhaor@njupt.edu.cn)

    DOI:10.1007/s11801-022-1113-y

    Topics