Bringing Chromatography Back To Colour

摘要

Biological systems enhance the odor discrimination capabilities by performing a small separation of complex mixtures. This principle may be successfully exploited in the development of new sensor platforms. The aim of the presented work is to implement the gas-chromatographic separation principle for chemical sensing. Herein we report a simple way of imaging gas diffusion through a channel by means of optical changes occurring in a track that contains a chemical indicator embedded in a polymeric matrix.