1985•Journal of Applied PhysicsRequires access

Determination of the rotational viscosity from the director pattern relaxation in twisted nematic cells

F. Leenhouts

Abstract

The rotational viscosity γ1 is an essential physical quantity directly related to the response times of liquid crystals. We have developed a new method to determine γ1 which utilizes the capacitive detection of the director pattern relaxation in a twisted nematic cell upon switching off the applied voltage of the twisted nematic liquid-crystal display. Measurements have been performed on two liquid-crystal mixtures. The agreement between the results obtained with the new method and those obtained from a magnetic field-induced nematic deformation method is quite satisfactory.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 16 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Liquid crystal, Rotational viscosity, Viscosity, Biaxial nematic, Condensed matter physics, Materials science, Relaxation (psychology), Capacitive sensing