This paper employs a molecular dynamics approach to uncover the time profile of exciton formation, which can be divided into two stages: localization of electron-hole pairs and relaxation process (nuclear and electronic). Under photoexcitation, an electron-hole pair is formed by an electronic transition, and the pair in turn becomes localized through the electron-lattice interaction, which trig...

This study presents a methodology to reveal traces of viral particles, as aerosol with known chemical and molecular structure, in sample by means photon electron interactions. The method is based on Monte Carlo simulations the analysis photon-electron fluxes-spectra through energy channels counts function different concentrations air looking at peculiar photon/electron interactions potential ab...

27%-efficient perovskite/silicon tandem solar cells are achieved in n–i–p configuration by developing novel electron and hole selective contacts, which combine high broadband transparency with efficient charge extraction.

As the impetus to extend computer and communications as far possible into the battlefield continues to grow, con.guration management of these computer and communication networks becomes a challenging task. The challenges stem mainly from the volatile connectivity (due to network element failures) and sporadic mobility (due to the dynamics of the battlefield theatre). Thispaperproposes a self-co...

A numerical study of the energy relaxation and conductivity of the Coulomb glass is presented. The role of many-electron transitions is studied by two complementary methods: a kinetic Monte Carlo algorithm and a master equation in configuration space. A calculation of the transition rate for two-electron transitions is presented, and the proper extension of this to multielectron transitions is ...

Progress has been made in the development of four-dimensional ultrafast electron microscopy, which enables space-time imaging of structural dynamics in the condensed phase. In ultrafast electron microscopy, the electrons are accelerated, typically to 200 keV, and the microscope operates in the transmission mode. Here, we report the development of scanning ultrafast electron microscopy using a f...

We consider a plasma consisting of particle components with different temperatures. The components are uniformly distributed in the configuration space and MAXwELiian in the velocity space. Pair correlations are assumed to be small and higher order correlations negligible. It is shown from the BBGKY-hierarchy that the influence of the electrons on the ion kinetics can be taken into account by t...

in this paper the role of super paramagnetic iron oxide nanoparticles (spi) on platinum nanoclusters on activated carbon (pt/c) for electrocatalytic oxygen reduction reaction was considered. four composites of pt/c and super paramagnetic iron oxide nanoparticles were prepared with the same total composites weight and different loading of pt/c (1.2, 0.6, 0.4 and 0.3 mg ). the composite attached ...