Study of tungsten point contacts’ electric conductivity in a complex gas medium

Abstract

The electrical conductivity of tungsten point contacts has been investigated in multicomponent das medium. The complex gas mixture was the human exhaled gas. It has been found that the point contacts (PCs) demonstrate spectral type responses to the action of complex gas media. The spectral character of the time dependence of electrical conductivity is a unique feature observed for the first time on tungsten-based PC sensors in a multicomponent gas medium. The results obtained hold much promise of large-scale investigations on point contacts in multicomponent gas media which can provide the information required to estimate the individual contributions of the gas mixture components to the total response of point contacts.