Miniature Chemical Sensor Combining Molecular Recognition with Evanescent Wave Cavity Ring-Down Spectroscopy

Pipino, Andrew C. R.

National Institute of Standards and Technology, Gaithersburg, MD (United States)

关键词: 46 Instrumentation Related To Nuclear Science And Technology;    Sensitivity;    Polarization;    Detection;    54 Environmental Sciences;   

DOI  :  10.2172/834660
RP-ID  :  EMSP-73844-2001
RP-ID  :  AI07-97ER62518
RP-ID  :  834660

美国|英语

来源: UNT Digital Library

【 摘 要 】

To address DOE's chemical sensing needs, a new class of chemical sensors is being developed to enable qualitative and quantitative, remote, real-time, optical diagnostics of chemical species in hazardous gas, liquid, and semi-solid phases by employing evanescent wave cavity ring-down spectroscopy (EWCRDS). The sensitivity of EW-CRDS was demonstrated previously under Project No.60231. The objective of this project is to achieve highly selective chemical detection in a complex matrix of interferants by combining EW-CRDS with molecular recognition (MR) chemistry and by exploiting the polarization dependence of EW-CRDS to enhance optical selectivity.