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Updated: Mar 1, 2026

Sample Preparation in Quartz Crystal Microbalance Measurements of Protein Adsorption and Polymer Mechanics
Published on: January 22, 2020
Note: A dual-channel sensor for dew point measurement based on quartz crystal microbalance
Ning Li1, Xiaofeng Meng1, Jing Nie1
1School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
Abstract:
A new sensor with dual-channel was designed for eliminating the temperature effect on the frequency measurement of the quartz crystal microbalance (QCM) in dew point detection. The sensor uses active temperature control, produces condensation on the surface of QCM, and then detects the dew point. Both the single-channel and the dual-channel methods were conducted based on the device. The measurement error of the single-channel method was less than 0.5 °C at the dew point range of -2 °C-10 °C while the dual-channel was 0.3 °C. The results showed that the dual-channel method was able to eliminate the temperature effect and yield better measurement accuracy.
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