To investigate the electromagnetic interaction of molecules inside the nanotubes, first, the structure of nanotubes B16N16 was optimized with hybrid density functional theory (B3LYP) using the EPR-II basis set, then Cu, Cu+, Cu++ were located in nanotube and we studied the total energy, band gap energy, electrical potential, changes of band gap energy in terms of total energy and dipole moment ...

Studying the dynamic behavior of topological spin textures can unlock future low-energy and high-speed spintronics devices. Recently, synchrotron-based technique diffractive ferromagnetic resonance (DFMR) was developed, allowing for element-selective studies selected, ordered magnetic modes. In this work, authors reveal by using DFMR how time-dependent magnetization dynamics couple to complex t...

abstract. topological indices are the numerical value associated with chemical constitution purporting for correlation of chemical structure with various physical properties, chemical reactivity or biological activity. graph theory is a delightful playground for the exploration of proof techniques in discrete mathematics and its results have applications in many areas of sciences. a graph is a ...

In this work, we investigate the behavior of low-energy trajectories in dynamical framework spatial elliptic restricted 4-body problem, developed using Hamiltonian formalism. Introducing canonical transformations, function neighborhood collinear libration point L1 (or L2), can be expressed as a sum three second order local integrals motion, which provide compact topological description transits...

The energy of a graph G is equal to the sum of absolute values of the eigenvalues of the adjacency matrix of G, whereas the Laplacian energy of a graph G is equal to the sum of the absolute value of the difference between the eigenvalues of the Laplacian matrix of G and the average degree of the vertices of G. Motivated by the work from Sharafdini an...

Collective excitations of electron spins in a ferromagnetic sample dominated by the magnetic dipole-dipole interaction strongly influence the field structure of microwave radiation. A small quasi-two-dimensional ferrite disk with magnetic-dipolar-mode (MDM) oscillation spectra can behave as a source of specific fields in vacuum, termed magnetoelectric (ME) fields. A coupling between the time-va...

I consider a topological transition resulting in an abrupt change by of the geometric (Berry’s) phase occurring in an optical modulator based on a fiber ring resonator. The topological transition, induced by modifying the birefringence along the ring, manifests itself in a narrow resonance in the transmission of the optical modulator. Contrary to the adiabatic case, the condition of critical co...