A quartz crystal microbalance (QCM) (also known as quartz microbalance (QMB), sometimes also as quartz crystal nanobalance (QCN)) measures a mass variation per unit area by measuring the change in frequency of a quartz crystal resonator.

Quartz crystal microbalance with dissipation (QCM-D) is a highly sensitive surface technique that monitors real-time changes occurring at surfaces with nano-level sensitivity.

2021年3月24日 · Quartz crystal microbalance with dissipation (QCM-D) monitoring is a powerful tool used to sensitively examine the real-time responses of polymer films to external responses. For example, the technique is commonly used to monitor film growth, material adsorption, thin film swelling, and ion exchange.

2021年10月15日 · Quartz crystal microbalance (QCM) sensors have been massively developed because they have high sensitivity, consume low energy, and can be readily modified. Recently, QCM coated by graphene composites has been explored to sensitively and selectively detect various gases and humidity.

NDK introduces liquid-phase biosensors (mainly biomolecular interaction analyzers, etc.) and gas-phase gas sensors and outgas sensors using the QCM method. QCM is short for “Quartz Crystal Microbalance,” and is a method of measuring micro mass changes using …

2024年4月1日 · Quartz crystal microbalance (QCM), being a mass-sensitive sensor, has the benefit of achieving high accuracy (up to nanogram level), providing real-time digital frequency output, and being easy to operate.

Quartz Crystal Microbalance with Dissipation monitoring (QCM-D) is a real-time, surface sensitive technique for analyzing surface-interaction phenomena, thin film formation and layer properties.

2019年4月6日 · The QCM-I uses a network analyzer to measure the complex impedance of the sensor over a range of frequencies around each resonance selected. The software then fits these curves to accurately determine the frequency of the conductance maximum (the resonance frequency, f r ) and the bandwidth of the peak (Full Width at Half Maximum, FWHM), both ...

The QCM-I (QCM-D) measuring unit is a high-sensitivity mass sensor, which measures the change in frequency of a quartz crystal resonator and as a label free biosensor it measures the “wet mass” of the adsorbed layer in processes occurring at or near the sensor surface.

The QCM sensor is based on the piezoelectric properties of the quartz crystal. The application of an alternating current causes the mechanical vibration of the quartz crystal in the MHz range. The QCM technique measures the variations in quartz frequency for …