Authors: S.J. Kwoun, R.M. Lee, B. Han and F.K. Ko
Affilation: Drexel University, United States
Pages: 338 - 341
Keywords: nanofiber, piezoelectric sensors, quartz crystal microbalance, TSM chemical sensor
Polymer thin films are used extensively as a chemically sensing medium in variety types of acoustic sensors. It is well known that the sensitivity of a sensing film is proportional to the surface area of the film per unit mass. In our research we have studied the feasibility of using thin polymeric films made of nanofibers (NFs) as novel sensor interface. Thin NF films have surface area approximately one to two orders of the magnitude larger than continuous films. The NF films made of Poly-Lactic Acid-Co-Glycolic Acid (PLAGA) polymers were studied with Thickness-Shear Mode (TSM) resonator operating at 10 MHz. The response of the NF sensor to gaseous and liquid media under various ambient conditions was studied in details.