Model 400A Series Time-Resolved Electrochemical Quartz Crystal Microbalance (EQCM)
CH Instruments, Inc.The quartz crystal microbalance (QCM) is a variant of acoustic wave microsensors that are capable of ultrasensitive mass measurements. Under favorable conditions, a typical QCM can measure a mass change of 0.1-1 ng/cm2. QCM oscillates in a mechanically resonant shear mode under the influence of a high frequency AC electric field which is applied across the thickness of the crystal. Figure 1b shows an edge view of a QCM crystal…