CuO-based acetone sensor for potential disease diagnosis

Abstract

Cupric oxide was fabricated by thermal oxidation of Cu foil at ambient air condition. It was characterized using Raman Spectroscopy. The sensing ability of CuO towards acetone vapor was studied using a static gas sensing set-up measuring the response in terms of electrical resistance. Fast response and recovery of the sensor was observed. The selectivity of the sensor to acetone was investigated by comparing its sensitivity to ethanol vapor and water vapor. Resistance of CuO increased in the presence of acetone vapor. The sensor has greater sensitivity to acetone than that of with ethanol and water vapor. The fabricated sensor is relatively selective to acetone and has a potential for use in disease diagnosis.