Picture of aircraft jet engine

Strathclyde research that powers aerospace engineering...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers involved in aerospace engineering and from the Advanced Space Concepts Laboratory - but also other internationally significant research from within the Department of Mechanical & Aerospace Engineering. Discover why Strathclyde is powering international aerospace research...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Continuously rotating chiral liquid crystal droplets in a linearly polarized laser trap

Yang, Y. and Brimicombe, P.D. and Roberts, N.W. and Dickinson, M.R. and Osipov, M.A. and Gleeson, H.F. (2008) Continuously rotating chiral liquid crystal droplets in a linearly polarized laser trap. Optics Express, 16 (10). pp. 6877-6882. ISSN 1094-4087

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

Abstract

The transfer of optical angular momentum to birefringent particles via circularly polarized light is common. We report here on the unexpected, continuous rotation of chiral nematic liquid crystal droplets in a linearly polarized optical trap. The rotation is non-uniform, occurs over a timescale of seconds, and is observed only for very specific droplet sizes. Synchronized vertical motion of the droplet occurs during the rotation. The motion is the result of photo-induced molecular reorganization, providing a micron sized opto-mechanical transducer that twists and translates.