Published in July 2015 by the American Chemical Society, “Hand-Held Reader for Colorimetric Sensor Arrays” by Jon R. Askim and Kenneth S. Suslick, Marvin T. Schmidt research professor of chemistry, Department of Chemistry, University of Illinois at Urbana-Champaign, described a low-noise and highly accurate instrument, which could be used to perform real-time chemical analysis at scan rates up to 48 Hz.
Extending this technology further to build an “optoelectronic nose,” Suslick and postdoctoral research associate Zheng Li, have devised and published methods to monitor the freshness of five meat products in 2016, which includes beef, chicken, fish, pork and shrimp, and to identify liquors in 2017.