Abstract
Reported is switching of bistable PDLCs with dual frequency drive. Low frequency voltage pulses (2.5kHz/100 V/>0.25 s) result in the transparent memory state. High frequency pulses (100kHz/80V/0.5s) return to the opaque memory state; which is a time useful for practical applications, e.g.still picture. Applying repeatedly high frequency voltage pulses recover the initial scattered state, which is different from above two states, for reproducible switching. Polymer content and surface treatment of substrates drastically affect the PDLC droplet formation and bistability without holding voltage.
