Electrochemical Quartz Crystal Microbalance EQCM

The electrochemical quartz crystal microbalance EQCM/QCMD is a highly sensitive test instrument that can measure ng levels of "wet mass" on or near the sensor surface.

The measuring principle of this equipment is based on impedance analysis of quartz crystal, measuring resonance frequency and peak width of resonance conductance curve.The peak width or half-width of the resonance conductance curve is directly related to the dissipation factor (Q).Molecular interactions and molecular adsorption on a wide variety of different types of surfaces can be studied, including interactions between proteins, lipids, polyelectrolytes, polymers, and cells/bacteria with surfaces or adsorbed molecular layers; multiple frequency and dissipation factor data can be provided to fully understand the state of molecules adsorbed on sensor surfaces.

Applications:1. sensor development

2. Protein aggregation studies

3. Characterization of fouling on biofilm surfaces

4. Cytological characterization

5. Characterization of bilayer lipid layers

6. Battery Material R & D

7. electropolymerization

8. Coating monitoring under various industrial conditions (vacuum, drop casting, ink jet printing)

9. glove box environment

Frequency Test Range

1-61 MHz (13th harmonic can be tested when fundamental frequency is 5 MHz)

17th harmonic can be tested at 3MHz fundamental frequency

12th order harmonics can be tested at fundamental frequencies of 5MHz

At 10MHz fundamental frequency, 5th order harmonics can be tested