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

Pipino, Andrew C. R. ; Meuse, Curtis W.

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

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

DOI  :  10.2172/834661
RP-ID  :  EMSP-73844-2002
RP-ID  :  AI07-97ER62518
RP-ID  :  834661

美国|英语

来源: UNT Digital Library

【 摘 要 】

To address the chemical sensing needs of DOE, a new class of chemical sensors is being developed that enables qualitative and quantitative, remote, real-time, optical diagnostics of chemical species in hazardous gas, liquid, and semi-solid phases by employing evanescent wave cavity ringdown spectroscopy (EW-CRDS). The sensitivity of EW-CRDS was demonstrated previously under Project No.60231. The objective of this project is to enhance the range of application and selectivity of the technique by combining EW-CRDS with refractive-index-sensitive nanoparticle optics, molecular recognition (MR) chemistry, and by utilizing the polarization-dependence of EW-CRDS. Research Progress and Implications