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.

中文翻译：

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使用电纺纳米多孔聚合物线的微制造谐振器的性能增强

通过在高湿度下静电纺丝制备纳米多孔聚（甲基丙烯酸甲酯）（PMMA）线，并将其连接在微型石英音叉（QTF）的两个插脚之间。由于PMMA线模量的降低，将QTF暴露在乙醇蒸气中会引起频率偏移，并且随着乙醇蒸气浓度的增加，频率变化也会增加。纳米多孔线包覆的QTF比普通线包覆的QTF表现出更高的灵敏度和更快的响应时间，这归因于高表面积和孔网络，促进了PMMA线内乙醇分子的运输。