While the mass measured with QCM-D includes coupled solvent, ellipsometry measures the refractive index to derive the dry mass of the adsorbed film. Combining both techniques can add insight into the solvent content, which is valuable in applications spanning from polymer studies to vesicles.
The standard configuration is designed for aqueous experiments, while optional high resistance sealing gaskets in Kalrez adds compatibility with harsh chemicals. The module is fitted inside the QSense Explorer chamber, which is mounted on the stage of the external ellipsometer.