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Vapor Sensing Characteristics of Nanoelectromechanical Chemical Sensors Functionalized Using Surface-Initiated Polymerization
journal contribution
posted on 2014-07-09, 00:00 authored by Heather
C. McCaig, Ed Myers, Nathan S. Lewis, Michael L. RoukesSurface-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.