Development of High-Sensitive Electro-Optic Sensor Using DAST Crystals

Liquid Crystals for Electro-optic Applications

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Electro-Optic Response of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Liquid Crystalline State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Physical Properties of Liquid Crystals . . . . . . . . . . . . . . . . . . . . . . ....

Electro-optic Properties of Semiconductor Nano-crystals And Electro-optic Polymers And Their Applications

The Development of a Highly Sensitive Fiber-Optic Oxygen Sensor

Abstract: This paper presents a highly sensitive fiber-optic oxygen sensor. The sensor was fabricated using palladium (II) meso-tetrakis (pentafluorophenyl) porphyrin (PdTFPP) and porous silica nanoparticles embedded in a tetraethylorthosilane (TEOS)/n-octyl-triethoxysilane (Octyl-triEOS) composite xerogel present as a coating on the end of the fiber. Sensitivity is quantified in terms of the r...

Design of Novel High Sensitive MEMS Capacitive Fingerprint Sensor

In this paper a new design of MEMS capacitive fingerprint sensors is presented. The capacitive sensor is made of two parallel plates with air gap. In these sensors, the capacitance changes is very important factor. It is caused by deformation of the upper electrode of sensor. In this study with making slots in upper electrode, using T-shaped protrusion on diaphragm in order to concentrate the f...

Physical Aspects of Electro-optic Properties of Smectic Liquid Crystals

We present an E ective Internal Field Model for the antiferroelectric (AF) to eld induced ferroelectric (FF) transition of smectic CA. This model attributes the fast dynamics and high threshold elds of this transition to the large magnitudes of its in-plane polarization. We conclude that propagating ngers observed in the vicinity of the AF $ FF threshold eld can only be observed in holding elds...