The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We have applied evanescent dynamic light scattering (DLS) to study the film formation of polymer latex dispersions. A dynamical glass transition is observed. When the particles fuse, the scattering rate decreases. After fusion, a new fast process (τ r 1 ms) is observed, which is not present in bulk DLS data. We attribute the process to discontinuous relaxation of surface induced stresses (transient...
We studied the desorption of multilayers of cadmium arachidate (CdA) deposited by the Langmuir-Blodgett dipping technique onto gold-coated, optically polished microbalance quartz plates. Thus, it was possible to monitor the UV-light (90% at λ=254 nm)-mediated photo-desorption process by measuring simultaneously the time dependence of the mass-density of the thin film coating on the quartz oscillator...
The effects of a finite polarizability of a liquid sample onto the series resonance frequency of a piezoelectric resonator are described within the small-load approximation. It is found that the sample's electrical capacitance (the ratio of surface potential and surface polarization at the crystal surface) enters the motional branch of the equivalent circuit, thereby shifting the series resonance...
For small droplets deposited on the surface of an acoustic thickness shear resonator, the shear motion of the substrate induces vortex flow close the three-phase line. There is a rather strong peak of stress right at the line of contact and a more extended region (comparable in size to the penetration depth) where the surface stress is lower than average. Altogether, the vortices lower the integral...
The work describes the use of readily available and economical quartz crystal torsional resonators for microweighing. The resonance behavior was probed by impedance analysis. Torsional resonators are straightforwardly adapted to the detection electronics usually employed for driving a quartz crystal microbalance. The analysis proceeds as with quartz crystal resonators. The measurement of the viscoelastic...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.