ACS Sensors
ACS Sensors
5 years ago

Performance Enhancement of a Microfabricated Resonator Using Electrospun Nanoporous Polymer Wire

Performance Enhancement of a Microfabricated Resonator Using Electrospun Nanoporous Polymer Wire
A nanoporous poly(methyl methacrylate) (PMMA) wire was prepared by electrospinning under high humidity and attached between two prongs of a microfabricated quartz tuning fork (QTF). Exposure of the QTF to ethanol vapor caused a frequency shift due to a decrease in the modulus of the PMMA wire, and the frequency change increased as the concentration of ethanol vapor increased. The nanoporous wire-coated QTF exhibited higher sensitivity and faster response time than a plain wire-coated QTF, which was attributed to the high surface area and pore networks facilitating the transport of ethanol molecules inside the PMMA wire.

Publisher URL: http://dx.doi.org/10.1021/acssensors.7b00461

DOI: 10.1021/acssensors.7b00461

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