An evanescent-field sensor system and method of using the system to detect either liquid- or airborne biological pathogens, chemical agents, and other harmful or toxic species is provided. The sensor system involves 1) an evanescent-field sensor having a substrate surface with at least a partial bio-...http://www.google.com.au/patents/US7368281?utm_source=gb-gplus-sharePatent US7368281 - Label-free evanescent-field detection of biological and chemical agents
