1. komponenta

Lecture type	Total
Lectures	6
Exercises	10

* Load is given in academic hour (1 academic hour = 45 minutes)

Small Angle X-ray Scattering, SAXS (angles 0.1-10 degrees), is a method in the study of non-crystalline materials. Characteristic scale of the studied structure and the scattering angle are inversely proportional, thus SAXS provides information on relatively larger scales, 1-100 nm. Scattering intensity distribution is a function of the electron density in the sample and thus may provide information on size, shape, orientation and distribution of the building elements (macromolecules, colloidal particles and other supramolecular structures) of the sample. We will present the application of SAXS in the study of the conformation of polyelectrolytes. We will use DNA as an example of a semi-rigid biopolyelectrolyte.

1. van der Maarel, J. R. C. Introduction to Biopolymer Physics; World Scientific; Singapore, (2007).
2. "2D X-ray diffraction", Bob B. He, Wiley, New Jersey (2009). Str. 329-350. (ISBN 978-0-470-22722-0)
3. "Konformacije biopolielektrolita", diplomski rad A. Sučić, mentor T. Vuletić (2012).
4. Nierlich, M.; Williams, C. E.; Boue, F.; Cotton, J. P.; Daoud, M.; Farnoux, B.; Jannink, G.; Picot, C.; Moan, M.; Wol, C.; Rinaudo, M.; de Gennes, P.-G., J. Phys. (Fr.) 40, 701 (1979).
5. Koyama, R., Macromolecules 17, 1594 (1984); Koyama, R., Physica B 120, 418 (1983).
6. Wang, L.; Bloomfield, V. A., Macromolecules 24, 5791 (1991).
7. K. Salamon, D. Aumiler, G. Pabst, T. Vuletić, Macromolecules 46, 1107 (2013)

Biofizika - izborni predmeti 1 - Regular study - Biophysics