Chemical Microsensors on the Tips of Optical Fibers (image) University of California - San Diego Share Print E-Mail Caption Porous photonic crystal microsensor particles on the ends of optical fibers can detect organic pollutants. Credit Brian King, UCSD Chemistry and Biochemistry Usage Restrictions Permission granted for use to illustrate news reports on this new material. For other uses please contact email@example.com. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.