ALE\u0160 DOLI\u0160KA
University of Maribor, Laboratory for Characterization and Processing of Polymers<\/p>\n\n\n\n
Tuesday, November 26, 2013 at 11:00 AM<\/p>\n\n\n\n
Lecture hall, III wing, Institute of Physics, Bijeni\u010dka 46, Zagreb<\/p>\n\n\n\n
Model films are becoming increasingly important due to very well-defined properties related to surface chemistry. Such model systems are suitable for studying surfaces and their interactions with different functional groups. Characterizations of such model films are easy to perform, and techniques such as quartz crystal microbalance (QCM) can be used for in situ adsorption studies. Quartz crystal microbalance with dissipation monitoring (QCM-D) is one of the few techniques that provide direct information on the in situ adsorption process. It is based on the change in resonant frequency of a thin AT-cut piezoelectric quartz crystal disc that oscillates in shear mode when an alternating voltage is applied to the electrodes. The resonant frequency changes with the mass applied to the crystal surface, making the QCM a very sensitive mass sensor. Due to its high resolution, it is a powerful device in various technological applications and is of great importance for adsorption studies in liquid environments. Some practical examples and possible uses of QCM-D will be highlighted. After adsorption, the treated model surfaces (model PET films, model cellulose films\u2026) can be characterized by AFM imaging or other surface techniques such as XPS or ATR-FTIR.<\/p>\n\n\n\n
A brief overview of the application of the QCM-D technique is given. As part of the UKF project \u201cConfined DNA\u201d (http:\/\/soft.ifs.hr<\/a>), the Institute of Physics acquires QCM-D, a device used for the characterization of soft thin films, i.e. monitoring the deposition of bio\/macro\/molecules on surfaces. We would emphasize that QCM-D has many applications in biomedicine, biochemistry, biophysics (http:\/\/www.q-sense.com\/publications<\/a>).<\/p>\n\n\n\n *JOINT SEMINAR Lecturer ALE\u0160 DOLI\u0160KAUniversity of Maribor, Laboratory for Characterization and Processing of Polymers Date and time Tuesday, November 26, 2013 at\u2026<\/p>","protected":false},"author":4,"featured_media":2512,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":7,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-2587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seminari"],"yoast_head":"\n
Croatian Biophysical Society and Institute of Physics<\/p>","protected":false},"excerpt":{"rendered":"