Oxygen Sensing Properties of the WO3 Thick Films

This paper presents oxygen gas sensing properties of WO3 thick films. In this work, the WO3 thick films were prepared by standard screen-printing method. These films were characterized by X-ray diffraction (XRD) measurements and scanning electron microscopy (SEM). The oxygen gas sensing properties of these thick films were investigated at different operating temperatures and oxygen gas concentrations. The WO3 thick films exhibit excellent oxygen sensing properties with a maximum sensitivity of ~ 35.75 % at 350 oC in air atmosphere with fast response and recovery time

Fabrication of low cost thermomechanical analyser (TMA)

663-666Fabrication of low cost thermomechanical analyser(TMA) which is one of the versatile instrument required for determination of glass transition temperature (Tg) of polymer is reported. The cost reduction during fabrication is so extensive that the entire cost of the instrument can be as low as Rs 6000/- which makes it in fact, affordable for any college