Kent State University

The University Court of the University of Aberdeen

Fred Minkowski

Peter Palffy-Muhoray

Oleg D Lavrentovich

Hiroshi Yokoyama

Jie V Xiang

Andrii Varanytsia

Corrie T Imrie

John M Storey

Vincent J Hetherington

Mykhailo Pevnyi

Tianyi Guo

Daniel E Paterson

A lasing device includes an active layer comprising a cholesteric liquid crystal material and a laser dye, and a liquid crystal cell including spaced apart substrates defining a cell gap in which the active layer is disposed. The substrates include electrodes arranged to bias the active layer into an oblique helicoidal (Ch) state. At least one substrate of the liquid crystal cell is optically transparent for a lasing wavelength range of the device.

Electrically tunable laser with cholesteric liquid crystal heliconical structure

An apparatus for measuring normal and shear stress at a surface. The apparatus includes a substrate; and a plurality of sensing units on the substrate. Each sensing unit includes a mechanical transducer having a receiving surface and a sensing surface; and a plurality of normal force sensors between the sensing surface and the substrate.

Apparatus for measuring surface profile of normal and shear stress

Growing community of inventors

Kent, OH, United States of America

Fred Minkowski