Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Flexoelectric switching in a bistable nematic device

Davidson, A.J. and Mottram, N.J. (2002) Flexoelectric switching in a bistable nematic device. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 65 (5). 051710. ISSN 1063-651X

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

We present a continuum theory meodel of switching in a bistable nematic crystal device. The bistability of the device investigated relies on the fact that one of the cell surfaces exhibits two stable anchoring states, that is, two surface director orientations are locally stable. Since the other surface exhibits monostable, homeotropic anchoring there are two possible ground state dorector orientatins within the cell, depending on the director orientation at the bistable surface. We first investigate the stability of these base states and find a critical surface anchoring strength below which only on e of the states is stable. We also investigate the process of switching between the two stable states through the application of an electric field and the presence of a flexoelectric effect and may hinder switching. We find, therefore, that a window of possible field strengths exists within which switching occurs.