Quartz Crystal Microbalance
An experiment using a quartz-crystal microbalance (QCM) with impedance (QCM-I) is a unique technique popular in characterizing biological films that are structurally complex.
The Quartz Crystal Microbalance is a well-established and sensitive technique used to measure the interactions of molecules, polymers and biological assemblies with a sensor surface, in air or liquid, label-free and in real time. It is based on the change in resonant frequency of a quartz crystal sensor when it is covered with a thin film or liquid.
Combining QCM-I and OWLS Measurements to Understand Polymer Multilayer Deposition Processes using OWLS and Quartz Crystal Microbalance with Impedance (QCM-I).
QCM-I is a powerful technique for measuring the adsorption or binding of polymers, proteins, nano-particles and other molecules to a surface. Multi-parametric data is obtained in real time, detailing changes of the hydrated mass and rigidity of layers coupled to the sensor surface.
The electrostatically driven adsorption of polymer and nano-particle multilayers is a well-established method for the physical and chemical transformation of surfaces to produce highly tailored and often “smart”, environmentally sensitive interfaces.
Supercapacitors using an EQCM: Supercapacitors have high charge/discharge rates, long cycle life, operate over a large temperature range and have a low cost-per-cycle. (EQCM) is a Quartz Crystal Microbalance that has been interfaced to a potentiostat such that one of the crystal faces is used as a working electrode.