Published July 9, 2014
| Version Supplemental Material + Accepted Version
Journal Article
Open
Vapor Sensing Characteristics of Nanoelectromechanical Chemical Sensors Functionalized Using Surface-Initiated Polymerization
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1.
California Institute of Technology
Abstract
Surface-initiated polymerization has been used to grow thick, uniform poly(methyl methacrylate) films on nanocantilever sensors. Cantilevers with these coatings yielded significantly greater sensitivity relative to bare devices as well as relative to devices that had been coated with drop-cast polymer films. The devices with surface-initiated polymer films also demonstrated high selectivity toward polar analytes. Surface-initiated polymerization can therefore provide a straightforward, reproducible method for large-scale functionalization of nanosensors.
Additional Information
© 2014 American Chemical Society. Received: February 6, 2014; Revised: June 10, 2014; Published: June 12, 2014. We gratefully acknowledge assistance from Derrick Chi in fabrication of the NEMS devices, from Xinchang Zhang for development of the NEMS control electronics, the Caltech Geology and Planetary Science Analytical Facility and the Kavli Nanoscience Institute for SEM imaging, and from Bruce S. Brunschwig and the Molecular Materials Research Center for the use of their ellipsometer. We acknowledge support for this work from DARPA/MTO-MGA through Grant NBCH1050001, and from the Department of Homeland Security, Centers of Excellence, Agreement 2008-ST-061-ED0002.Attached Files
Accepted Version - nihms844890.pdf
Supplemental Material - nl500475b_si_001.pdf
Files
nihms844890.pdf
Additional details
Identifiers
- PMCID
- PMC5297368
- Eprint ID
- 48562
- Resolver ID
- CaltechAUTHORS:20140814-112736743
Funding
- Defense Advanced Research Projects Agency (DARPA)
- NBCH1050001
- Department of Homeland Security
- 2008-ST-061- ED0002
Dates
- Created
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2014-08-14Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Kavli Nanoscience Institute , Physics Department