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.

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.

The quartz crystal microbalance is an essential addition to any biological laboratory. The data from a QCM perfectly complements that obtained from other techniques, such as surface plasmon resonance (SPR) and atomic force microscopy (AFM), …

石英晶体微天平(QCM)是基于石英晶体的压电效应而制成的表面敏感型分析技术,是非常灵敏的质量检测仪器,测量精度可达纳克级,并且具有广泛的应用领域,如监测和表征( 生物)膜沉积,检测特定抗原,研究生物分子结合动力学,细胞黏附和DNA 检测。 本研究综述了QCM在细. 收稿日期:2019-09-29...

2019年12月1日 · QCM-D is a non-destructive flow technique that uses an oscillating piezoelectric quartz crystal sensor to measures changes in frequency (Δf) and dissipation (ΔD) in real time (Busscher et al., 2010, Lozeau et al., 2015, Tarnapolsky and Freger, 2018). Recent advances focus on the use of QCM-D to provide more detailed information on bacterial ...

The entire process of excitation of the quartz crystal and recording and fitting of the decay curve occurs on the millisecond timescale. Therefore, real-time data acquisition is achievable with the QCM-D approach. QCM-D also enables the data acquisition at multiple overtones of a crystal’s fundamental resonance frequency.

Within surface science, a quartz crystal microbalance with dissipation monitoring (QCM-D) is a type of quartz crystal microbalance (QCM) based on the ring-down technique. It is used in interfacial acoustic sensing. Its most common application is the determination of a film thickness in a liquid environment (such as the thickness of an adsorbed ...

The QCM is a fixed high-frequency technique. DMA and shear rheometry are relatively low-frequency techniques, but you could use time-temperature superposition to access a larger frequency domain. The QCM provides a direct measurement of the high-frequency material response, which is often difficult to access.

Quartz crystal microbalance with Dissipation, QCM-D, is based on the same working principle as QCM, i.e. it measures the resonance frequency changes, Δ f, of a quartz crystal as a function of time. In addition to the frequency capture, QCM-D also collects time resolved information about the energy losses, the dissipation .

Quartz Crystal Microbalance, QCM, is a surface sensitive real-time technology that can be used to monitor molecular interaction at surfaces and interfaces via detection of changes in the resonance frequency of the QCM sensor.