Relativistic dynamical polarizability of hydrogen-like atoms

Using the operator representation of the Dirac Coulomb Green function the analytical method in perturbation theory is employed in obtaining solutions of the Dirac equation for a hydrogen-like atom in a time-dependent electric field. The relativistic dynamical polarizability of hydrogen-like atoms is calculated and analysed.Comment: 15 pages, 3 figures (not included, but hard copies are available upon request

Using atomic force microscopy with modified probes for determination modulus of elasticity and adhesion strength of the materials

В работе представлены результаты расчета модуля упругости полидиметилсилоксана и мембран тромбоцитов, рассчитанные по модели Джонсона-Кенделла-Робертса и Герца на основании данных, полученных методом атомно-силовой микроскопии в различных режимах индентирования.The results of calculation of elasticity modulus of polydimethylsiloxane and platelet membranes calculated by the Johnson-Kendell-Roberts and Hertz models are presented on the basis of data obtained by atomic force microscopy in various indentation regimes