Related Experiment Video
Updated: Feb 24, 2026
Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
Published on: June 2, 2017
Performance Enhancement of a Microfabricated Resonator Using Electrospun Nanoporous Polymer Wire
Seokyung Hwang1, Wuseok Kim1, Heewon Yoon1
1Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 790-784, Republic of Korea.
Abstract:
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.
