The properties and structure of de Vries materials in new series of organosiloxane liquid crystalline materials has been studied using electrooptical measurements and UV/V is spectroscopy. The compounds from this series show different strength of the de Vries phase. Two independent parameters to characterize de Vries properties were introduced. The structure-properties relations of these materi...

An electrooptical proximity sensor capable of measuring the distance and two-dimensional orientation of an object’s surface is presented. The robustness of the sensor, targeted for utilization in robotic active sensing, is achieved via the development of a novel amplitude-modulated-based electrooptical transducer, an electronic-interface circuit that provides very good noise immunity and a wide...

Ferroelectricity is a rising demand in fundamental and applied solid state physics. Ferroelectrics are used in microelectronics as active gate materials, in capacitors, electrooptical-acoustic modulators, etc. There is a particular demand for plastic ferroelectrics, e.g. as a sensor for acoustic imaging in medicine and beyond, in shapeable capacitors, etc. Microscopic mechanisms of ferroelectri...

In this paper we propose a new method for the determination of the distribution of electrical and geometrical particle parameters based on electrooptical experimental data. The electrooptical method leads to the solution of inverse ill-posed problems. The main equations for the determination of the distribution of particles on these parameters are presented. To find out the distribution functio...

A new technique for direct-writing of polymer nanostructures on insulating and semiconducting surfaces based on Electrochemical Dip-Pen Nanolithography (E-DPN) is described. The technique is based on electrochemical polymerization of monomers directly underneath the AFM tip. Sub-50 nm poly-3,4-ethylenedioxythiophene lines can be easily created. Such capability to direct-write and pattern polyme...

The conditions for THz radiation generation caused by electron transite time resonance in momentum and real spaces under low-temperature opticalphonon emission are analyzed. It is shown that such a phenomenon provides a unique possibility to realize the sub-THz and THz radiation generation at the border of the electrooptical and electronic techniques by using both the approaches: (i) amplificat...

2014 One system exist which is capable of microsecond electrooptical switching in liquid crystals, on polarized light. It is the well-known SC* valve, which uses a volume smectic ferroelectric material and a weak surface anchoring. A new effect is presented which gives rise to localized polar surface instabilities. Some of these surface induced instabilities persist for high frequency (1 MHz) A...

Fibers embedded in soft matrices are widely encountered biological systems, with the fibers providing mechanical reinforcement or encoding of instructions for shape changes. Here, coupling end-attached polymeric nanofiber forests and liquid crystals (LCs) is explored, where nanofibers templated into prescribed shapes by chemical vapor polymerization paracyclophane-based monomers supported films...

Chiral smectic liquid crystal cells showing V-shaped electrooptical switching have been reported as one of the most promising technologies for high-end display applications. In this work, time-resolved electrical behaviour of these devices has been obtained through a set of systematic measurements. The electrical equivalent circuit has been derived, a number of simulations at different frequenc...