Li, Mo and Myers, E. B. and Tang, H. X. and Aldridge, S. J. and McCaig, H. C. and Whiting, J. J. and Simonson, R. J. and Lewis, N. S. and Roukes, M. L. (2010) Nanoelectromechanical Resonator Arrays for Ultrafast, Gas-Phase Chromatographic Chemical Analysis. Nano Letters, 10 (10). pp. 3899-3903. ISSN 1530-6984 http://resolver.caltech.edu/CaltechAUTHORS:20101101-112952062
- Published Version
See Usage Policy.
- Supplemental Material
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20101101-112952062
Miniaturized gas chromatography (GC) systems can provide fast, quantitative analysis of chemical vapors in an ultrasmall package. We describe a chemical sensor technology based on resonant nanoelectromechanical systems (NEMS) mass detectors that provides the speed, sensitivity, specificity, and size required by the microscale GC paradigm. Such NEMS sensors have demonstrated detection of subparts per billion (ppb) concentrations of a phosphonate analyte. By combining two channels of NEMS detection with an ultrafast GC front-end, chromatographic analysis of 13 chemicals was performed within a 5 s time window.
|Additional Information:||© 2010 American Chemical Society. Received for review: 05/4/2010. Published on Web: 08/26/2010. The authors thank X. L. Feng and I. Bargatin for useful discussions and S. Stryker for machining assistance. We gratefully acknowledge support from the Defense Advanced Research Projects Agency via DARPA/ MTO-MGA Grant NBCH1050001 and from the Department of Homeland Security. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000.|
|Subject Keywords:||NEMS; gas chromatography; gas detectors; mass sensing|
|Official Citation:||Nanoelectromechanical Resonator Arrays for Ultrafast, Gas-Phase Chromatographic Chemical Analysis Mo Li, E. B. Myers, H. X. Tang, S. J. Aldridge, H. C. McCaig, J. J. Whiting, R. J. Simonson, N. S. Lewis, M. L. Roukes Nano Letters 2010 10 (10), 3899-3903|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||29 Nov 2010 22:47|
|Last Modified:||26 Dec 2012 12:35|
Repository Staff Only: item control page