Kent State University

Institut Jozef Stefan

Institute Jozef Stefan

University of Ljubljana

Stichting Katholieke Universiteit Genoemd Radboud Universiteit Nijmegen

Igor Musevic

Joseph W Doane

Bojan Marin

Janez Pirs

Silva Pirs

Theodorus Henricus Maria Rasing

Slobodan Zumer

Robert Blinc

Marko Uplaznik

Matjaz Humar

Miha Ravnik

Sergiy Volodymyrovych Lazarenko

Miha Skarabot

The patent refers to one or more droplets of chiral liquid crystals used as point source(s) of laser light. The source is shaped as a droplet of chiral liquid crystals () and an active medium preferably dispersed in the liquid crystals. The source is spherical and with a size of preferably between a few nanometres and 100 micrometres. A droplet consists of chiral liquid crystals () that have selective reflection in the range of the active medium's emission and can be cholesteric liquid crystals, a mixture of nematic liquid crystals and a chiral dopant or any other chiral liquid-crystal phase, preferably the blue phase, the ferroelectric phase, the antiferroelectric phase, any of the ferrielectric phases or another chiral phase of a soft substance, that need not be chiral by itself.

Spherical liquid-crystal laser

An oriented ferroelectric liquid crystal in the chiral smectic C phase with the smectic planes normal to bounding plates of a cell is interspersed with polymer which stabilizes and freezes the arrangement of the liquid crystal. The polymer which stabilizes the liquid crystal is formed by a method which includes introducing a mixture of a monomer and a ferroelectric liquid crystal between cell walls when the liquid crystal is in the isotropic phase, cooling the liquid crystal to a chiral nematic or smectic phase, and polymerizing the monomer. The cooling of the mixture can be done in the presence of a magnetic or electric field.

Method of making a ferroelectric liquid crystal cell including a cooling

An oriented ferroelectric liquid crystal in the chiral smectic C phase with the smectic planes normal to bounding plates of a cell is interspersed with polymer which stabilizes and freezes the arrangement of the liquid crystal.

Ferroelectric liquid crystal cell, a method of making it, and its use

Growing community of inventors

Ljubljana, Slovenia

Igor Musevic