Abbreviated Journal Title
BROAD-BAND; LENS ARRAY; MICROLENS; CRYSTAL; Optics
We demonstrated a novel optical switch with a reconfigurable dielectric liquid droplet. The device consists of a clear liquid droplet (glycerol) surrounded by a black liquid (dye-doped liquid crystal). In the voltage-off state, the incident light passing through the clear liquid droplet is absorbed by the black liquid, resulting in a dark state. In the voltage-on state, the dome of the clear liquid droplet is uplifted by the dielectric force to form a light pipe which in turn transmits the incident light. Upon removing the voltage, the droplet recovers to its original shape and the switch is closed. We also demonstrated a red color light switch with similar to 10:1 contrast ratio and similar to 300 ms response time. Devices based on such an operation mechanism will find attractive applications in light shutter, tunable iris, variable optical attenuators, and displays.
Ren, Hongwen; Xu, Su; Ren, Daqiu; and Wu, Shin-Tson, "Novel optical switch with a reconfigurable dielectric liquid droplet" (2011). Faculty Bibliography 2010s. 1809.