Fredrik Höök

TL;DR: In this paper, an experimental setup has been constructed for simultaneous measurements of the frequency, the absolute Q factor, and the amplitude of oscillation of a quartz crystal microbalance (QCM).

TL;DR: It is shown how quantitative data about the thickness, shear elastic modulus, and shear viscosity of the protein film can be obtained with the QCM-D technique, even beyond the Sauerbrey regime, if frequency (f) and energy dissipation (D) measurements measured at multiple harmonics are combined with theoretical simulations using a Voight-based viscoelastic model.

TL;DR: It is shown theoretically that viscoelastic layers with thicknesses comparable to the biofilms studied in this work can induce energy dissipation of the same magnitude as the measured ones.

TL;DR: In this article, a new quartz crystal microbalance instrument, allowing simultaneous frequency (f) and dissipation factor (D) measurements, has been used to study protein adsorption kinetics by measuring time-resolved data of both the D-factor, measuring energy dissipation due to the added overlayer, and the f-shift, measuring the effective mass load on the sensor.

TL;DR: In this paper, the adsorption kinetics of small unilamellar egg-yolk phosphatidylcholine vesicles were investigated by the quartz crystal microbalance−dissipation (QCM−D) technique, as a function of surface chemistry (on SiO2, Si3N4, Au, TiO2 and Pt), temperature (273−303 K), vesicle size (25−200 nm), and osmotic pressure.