A measurement system for odor classification based on the dynamic response of QCM sensors

Electronic nose for black tea quality evaluation by an incremental RBF network

“…The electronic nose technology has been successfully employed for recognition and quality analysis of various food and agro products, viz., wine [2,3], cola [4], meat [5], fish [6], coffee [7], etc. Also, it has successfully established its capability for other applications like medical diagnostics [8] and environment monitoring [9].…”

A new siloxane polymer for chemical vapor sensor

“…The thickness of the sensitive thin films coated on the QCM sensor was calculated to be about 186 nm by the Sauerbrey equation [9]. Sauerbrey's equation only applies to systems in which the following conditions are met: the deposited mass must be distributed evenly and the frequency change f/f 0 <0.05 [20,21], the QCM can work well. Where f is frequency change of the quartz resonant frequency (Hz) and f 0 is resonant frequency (Hz) of the QCM.…”

A room temperature supramolecular-based quartz crystal microbalance (QCM) methane gas sensor

“…Cryptophane-A molecules are easily gathered and crystallized on the surface, so the host molecules are dissolved in THF and deposited onto QCM device to fabricate a gas sensor via electrospray method. The mass variation m induces a variation of the quartz resonance frequency f according to Sauerbrey equation [15]:…”