Multistable liquid crystal waveplate

G. G. Wells, C. V. Brown

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A multistable liquid crystal waveplate has been produced by confining a roughly disk-shaped nematic liquid crystal droplet of diameter 50 mu m between two photoresist coated surfaces separated by 15 mu m. Dimple features occur on opposite sides of the curve-free edge of the droplet, which may indicate the position of nematic disclinations. The diameter that connects these features coincides with an optic axis of the droplet. In-plane ac voltage bursts produce an optic axis rotation, controllable down to 1 degrees steps, to other arbitrary, stable orientations. The rotation angle is proportional to the burst duration and the voltage squared.
Original languageEnglish
Article number223506
Number of pages3
JournalApplied Physics Letters
Volume91
Issue number22
DOIs
Publication statusPublished - 27 Nov 2007

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