Jump to main content
Jump to site search

Issue 1, 2013
Previous Article Next Article

Liquid crystal pump

Author affiliations


We report a dielectrically actuated liquid crystal (LC) pump. A small volume of LC forms a pillar-like droplet in a cylindrical hole which partially touches the bottom substrate with embedded interdigitated electrodes. By applying a voltage, the LC droplet can be largely stretched along the electrode direction by the generated dielectric force, which in turn exerts a pressure to displace a small volume of fluid on the opposite side of the chamber. Once the voltage is removed, the LC droplet returns to its initial state. The LC droplet with such a reciprocating movement behaves like a pump. In this work, the actuation mechanism of the LC pump is presented and the performance evaluated experimentally. Our LC pump has the following advantages: simple structure, easy fabrication, compact size, high precision, low power consumption, and relatively fast response time. It is promising for applications in lens actuators, biotechnology, drug delivery, and other lab-on-a-chip devices.

Graphical abstract: Liquid crystal pump

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Aug 2012, accepted on 24 Sep 2012 and first published on 26 Sep 2012

Article type: Paper
DOI: 10.1039/C2LC40953D
Lab Chip, 2013,13, 100-105

  •   Request permissions

    Liquid crystal pump

    H. Ren, S. Xu and S. Wu, Lab Chip, 2013, 13, 100
    DOI: 10.1039/C2LC40953D

Search articles by author