Journal
NANO LETTERS
Volume 14, Issue 7, Pages 3728-3732Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl500475b
Keywords
Cantilever sensor; nanocantilever; nanomechanical resonator; chemical vapor sensor; surface-initiated polymerization; ATRP
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Funding
- DARPA/MTO-MGA [NBCH1050001]
- Department of Homeland Security, Centers of Excellence [2008-ST-061-ED0002]
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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 nano-sensors.
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