A High Performance Impedance-based Platform for Evaporation Rate Detection.
This paper describes the method of a novel impedance-based platform for the detection of the evaporation rate. The model compound hyaluronic acid was employed here for demonstration purposes. Multiple evaporation tests on the model compound as a humectant with various concentrations in solutions were conducted for comparison purposes. A conventional weight loss approach is known as the most straightforward, but time-consuming, measurement technique for evaporation rate detection. Yet, a clear disadvantage is that a large volume of sample is required and multiple sample tests cannot be conducted at the same time. For the first time in literature, an electrical impedance sensing chip is successfully applied to a real-time evaporation investigation in a time sharing, continuous and automatic manner. Moreover, as little as 0.5 ml of test samples is required in this impedance-based apparatus, and a large impedance variation is demonstrated among various dilute solutions. The proposed high-sensitivity and fast-response impedance sensing system is found to outperform a conventional weight loss approach in terms of evaporation rate detection.
Department of Safety, Health and Environmental Engineering, Hungkuang University.
Wei-Lung
WL
Chou
Institute of Materials Engineering, National Taiwan Ocean University.
Pee-Yew
PY
Lee
Institute of Materials Engineering, National Taiwan Ocean University.
Cheng-You
CY
Chen
Instrument Technology Research Center, National Applied Research Laboratories.
Yu-Hsin
YH
Lin
Department of Chemical Engineering, National United University; linys@sunrise.hk.edu.tw.
Yung-Sheng
YS
Lin
D017097:Electric Impedance; D006820:Hyaluronic Acid; D008962:Models, Theoretical; D014835:Volatilization
D006820:Hyaluronic Acid