BOOK OF ABSTRACTS 6th Workshop on Current Problems in Physics: Zielona Góra - Lviv

2 The Workshop on Current Problems in Physics 2013 (WCPP'13) is already the sixth in a series of meetings which represent annual forum for the Polish and Ukrainian physicists community to present their latest scientific results. Usually, the meetings are attended by representatives of other countries, too. An important feature of the conference is the possibility for young scientists to present their research results and interact with the more experienced colleagues from other countries. The Workshop will be held in Zielona In the talk is presented a theory of separability for a class of Liouville integrable hamiltonian systems with all constants of motion quadratic in momenta. Then, the so called minimal quantization procedure is applied and is analyzed the problem of quantum separability of such constructed quantum systems. We present a density functional theory (DFT) study of the electronic and magnetic properties of the Cr 8 molecular ring. The all-electron linearized augmented plane wave method (LAPW) implemented in the Wien2k package and pseudopotential method implemented in Siesta package are used to calculate the electronic states, exchange coupling parameters of an infinite chain model system of Cr 8 8. We demonstrate how, under opportune modifications to the ring cycle structure, different one-dimensional chain models can be devised, with the capability of mimicking with good approximation the electronic and magnetic properties of the original Cr 8 molecule. Such models offer an unique opportunity, in virtue of the reduced computational effort, to carry out extensive investigations of a whole set of molecules belonging to the Cr-based molecular rings family. Magnetic iron oxide nanoparticles provide attractive possibilities in biomedical application such cell labeling and separation, target drug delivery and biosensor [1,2]. These applications require magnetic nanoparticles to be well-dispersed in liquid media, chemically stable and uniform in size. Due to the magnetic dipolar attraction, unmodified magnetite nanoparticles incline to aggregate into clusters and inhibit the advantage of the specific properties by single-domain. The aggregation associated with magnetite nanoparticles can be avoided by creating an electrostatic double layer using a surfactant steric stabilizer or silica coating [3]. In this presentation magnetic nanoparticles (Fe 3 O 4) are prepared by co-precipitation method and modify by silica using Stöber process [4]. The applications of arylboronic acids as catecholamine sensors are broad, because they are small and exible molecules. They can form fast and reversible cyclic esters with compounds containing diol moieties in aqueous media. Arylboronic acids potentially …