ABSTRACT

One of the spectroscopic applications of thermotropic hydrogen-bonded liquid crystals is fabrication of a thermistor using the thermotropic ferroelectric liquid crystalline ingredient. The design, performance and characteristics of this fabricated liquid crystalline device are elucidated. The characterization of liquid crystal thermistors in various phases is discussed. First time in the history of liquid crystals, a thermistor is derived from a mesogen and is characterized. The thermistor is a two-terminal device extensively used in electronic circuits. The variation of resistance is manifested with corresponding changes in temperature. Liquid crystal by definition is an organic substance that possesses characteristics of solid and that of liquid. A thermistor is basically composed of carbon material with proper leads to connect it in series to a device. Basically, the variation of resistance with temperature under constant field, pressure and frequency is termed as one of the prominent property of thermistor. Thermistors can be classified into two categories basing on the performance with temperature.