Odor sensor using quartz crystal microbalance coated with molecular recognition membrane

摘要

Quartz crystal microbalance (QCM) odor sensor coated with films of with acrylic-acid-film with different functional groups, methcrylic-acid-films with different functional group and styrene-film as the molecular recognition membrane are prepared using plasma chemical vapor deposition (CVD) method. The sensor coated with acrylic acid thin film as the molecular recognition membrane exhibits an excellent selectivity and a high sensitivity for ammonia and amine gases. The effect of the functional groups on the sensor characteristics is also investigated.