Researchers have developed a new type of bifocal lens that offers a simple way to achieve two foci (or spots) with intensities that can be adjusted by applying external voltage. The lenses, which use ...

A team of researchers has developed a novel method for using cholesteric liquid crystals in optical microcavities. The platform created by the researchers enables the formation and dynamic tuning of ...

Tunable photonic crystal based on a self-organising liquid crystal structure in an optical microcavity (Fig. Marcin Muszyński, Faculty of Physics, University of Warsaw). A team of researchers from the ...