3/7/2023 0 Comments Graphene quartzcrystal![]() It is suggested that the frequency response of the QCMs is dependent on water molecules adsorbed/desorbed masses on GO thin film in the low RH range, and on both water molecules adsorbed/desorbed masses on GO thin film and variations in interlayer expansion stress of GO thin film derived from swelling effect in the high RH range. The sensing structure consists of bi-layer films, in which graphene oxide (GO) film serves as an isolation layer between the electrode of the QCM and. Tai, +3 authors Yadong Jiang Published 13 October 2020 Materials Science Rare Metals As humidity is one of the most widely demanded environmental parameters, the precision of its detection is significant. Both GO deposition and release were monitored on silica- and poly-l-lysine (PLL) coated surfaces as a function of GO concentration and in NaCl, CaCl 2, and MgCl 2 as a function of ionic strength (IS). Self-assembled graphene oxide/polyethyleneimine films as high-performance quartz crystal microbalance humidity sensors Zhentao Yuan, H. Moreover, the possible humidity sensing mechanism of GO thin film coated QCMs was also investigated by monitoring the crystal's motional resistance change. Interactions of graphene oxide (GO) with silica surfaces were investigated using a quartz crystal microbalance with dissipation monitoring (QCM-D). The experiment results show that GO thin film coated QCMs exhibit an excellent humidity sensing performance. ![]() By exposing GO thin film coated QCMs to various relative humidity (RH) environments at room temperature, the humidity sensing characteristics of the QCMs such as sensitivity and linearity, response and recovery, humidity hysteresis were investigated. In this paper, we demonstrated that chemically derived graphene oxide (GO) thin film as a humidity sensitive coating deposited on quartz crystal microbalances (QCMs) for humidity detection.
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