Micromechanical photothermal spectroscopy of trace gases using functionalized polymers |
| |
Authors: | Stievater T H Papanicolaou N A Bass R Rabinovich W S McGill R A |
| |
Institution: | Naval Research Laboratory, Washington, DC 20375, USA. stievater@nrl.navy.mil |
| |
Abstract: | We demonstrate a novel method to spectroscopically detect and identify trace gases. Micromechanical photothermal spectroscopy (MPS) with functionalized sorbent materials provides trace gas spectra in an optical interaction length of only a few micrometers. We use microcavity interferometry to read out displacements as low as 25 fm/√Hz, heating as low as 200 pW/√Hz, and analyte concentrations as low as 65 parts-per-billion for the nerve agent simulant DMMP. MPS integrated with functional materials represents an important new tool in chip-scale optical sensing. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|