In natural ionic solids, cationic and anionic species are alternately arranged to minimize electrostatic energy. Aggregation of identical ionic species is commonly prohibited due to the repulsive, long-range nature of Coulombic interactions. Recently, we synthesized unique ionic solids, [AuI4CoIII2(dppe)2(D-pen)4]X2·nH2O (dppe = 1,2-bis(diphenylphosphino)ethane, D-pen = D-penicillaminate), in w...

We examine the one-dimensional motion of two similarly charged particles under the influence of only two forces, i.e. their Coulombic repulsion and their gravitational attraction, using the relativistic equation of motion. We find that when the rest mass of the two particles is sufficiently small (∼ 0.4 eV/c) and the initial Coulombic potential energy is sufficiently high (∼ mpc , where mp is t...

We consider thermal properties of the susy singlet majoron model. We compute the critical temperature Tc and the subsequent reheating temperature TRH for R-parity breaking. Succesful baryogenesis constrains the parameter space via the requirements that Tc and TRH are lower than the electroweak phase transition temperature. A further constraint is provided by requiring that the gauge singlet sho...

The electrochemical behavior of lithium bis~trifluoromethanesulfonyl!imide in ethyl methyl sulfone was studied. The coulombic efficiencies for the oxidation-reduction of lithium at platinum, aluminum, and mercury electrodes were 50, 93, and 99%, respectively. A comparison of the results with Pt, Al, and Hg electrodes suggests that chemical reactions of lithium with the electrolyte contribute to...

The origin of both weak temperature dependence and packing fraction dependence of T(1/4)η(3/2) in the thermal conductivity of the simple Lennard-Jones (LJ) liquid is explored. In order to discuss the relative contributions from attractive or repulsive part of the interaction potential separately, the thermal conductivity of a series of Weeks-Chandler-Anderson (WCA) fluids is calculated by molec...

We have observed that a featureless polymer thin film on a flat plate that is separated from another flat plate by a liquid filled gap can self-assemble into a periodic micropillar array. Moreover, we have observed that if there is a pattern on one of the plates, the boundary of the pillar array will align with the boundary of the pattern resulting in single domain arrays. The phenomenon is bel...

In this work, molecular dynamics simulation is performed to study the density and surface tension of water for a range of temperatures from 300 to 600 K. The extended simple point charge interaction potential for water is used. The particle-particle particle-mesh method, which automatically includes untruncated long-range terms, is used for the Lennard-Jones and the Coulombic terms. The results...

In electron dynamics calculations the interatomic Coulombic decay (ICD) process has recently been shown to take place in two vertically-aligned quantum dots (QDs). Energy emitted during the relaxation of one electron in one QD is converted into kinetic energy of another electron ejected from a neighboring QD. As the electronic structure of QDs can be controlled by their geometries, we prove her...

The interplay between the electron repulsion U and the Jahn-Teller electron-phonon interation E LR is studied with a large d model for the ferromag-netic state of the manganese oxides. These two interactions collaborate to induce the local isospin (orbital) moments and reduce the bandwidth B. Especially the retardation eeect of the Jahn-Teller phonon with the frequency is eeective to reduce B, ...

The stability of aqueous protein solutions is strongly affected by multivalent ions, which induce ion-ion correlations beyond the scope of classical mean-field theory. Using all-atom molecular dynamics (MD) and coarse grained Monte Carlo (MC) simulations, we investigate the interaction between a pair of protein molecules in 3:1 electrolyte solution. In agreement with available experimental find...