High-Frequency Resonators for Chemical Sensing

Dear Colleagues,

New air and drinking water contaminants have emerged due to the increased technological impact caused by the development of civilization. Their detection and monitoring require sophisticated instrumentation, e.g., HPLC–MS and laboratory environment. However, there is a significant need for portable instrumentation to carry out in-field detection. This can be performed by using chemical sensors. There are two key components of such a sensor: the sensing layer and the transduction mechanism, e.g., electrochemical, optical. The most versatile transduction is gravimetric detection because every compound has a mass. This is frequently achieved by using piezoelectric acoustic resonators. Their sensitivity with some assumptions is proportional to their resonant frequency squared. That is why the use of high-frequency resonators is gaining increased popularity. This Special Issue is dedicated to this emerging field in chemical sensing. By high-frequency, in this context, we mean QCMs with a resonant frequency above 50 MHz, all types of SAW resonators, MEMS and cantilever detection systems.

Dr. George R. Ivanov
Prof. Dr. Huiliang Cao
Guest Editors

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