نتایج جستجو برای: molecular dipole
تعداد نتایج: 656161 فیلتر نتایج به سال:
Two-dimensional molecular aggregate (2DMA), a thin sheet of strongly interacting dipole molecules self-assembled at close distance on an ordered lattice, is a fascinating fluorescent material. It is distinctively different from the conventional (single or colloidal) dye molecules and quantum dots. In this paper, we verify that when a 2DMA is placed at a nanometric distance from a metallic subst...
Molecules with large enough dipole moments can bind an electron by the dipole field, which has little effect on the molecular core. A molecular anion can be excited to a dipole-bound state, which can autodetach by vibronic coupling. Autodetachment spectroscopy of a complex anion cooled in a cryogenic ion trap is reported. Vibrational spectroscopy of the dehydrogenated uracil radical is obtained...
A spin system is considered with a Hamiltonian typical of molecular magnets, having dipole-dipole interactions and a single-site magnetic anisotropy. In addition, spin interactions through the common radiation field are included. A fully quantummechanical derivation of the collective radiation rate is presented. An effective narrowing of the dipole-dipole attenuation, due to high spin polarizat...
We study the effect of molecular dipole strength on the polymorphism of smectic A liquid crystals using computer simulations and density functional theory. We find, for a system of polar Gay–Berne particles with an off-centre axial dipole, a change in molecular organisation from non interdigitated to interdigitated (SAd) structure.
BACKGROUND Intermedilysin (ILY) is a human-specific cytolysin secreted from Streptococcus intermedius. In this study, the dynamic structure of ILY, StreptolysinO (SLO) and their 12mer substituted mutants for 500 ps was analyzed. Several parameters, such as dipole moment and electrostatic potential, were determined to elucidate the molecular mechanism of membrane binding. MATERIALS AND METHODS...
Recently, several quantum computation schemes utilizing ultracold dipolar molecules trapped in optical lattices were suggested [1]. The coupling due to dipole-dipole interactions between molecular bits is strong enough to induce entanglement and hence to realize a set of universal quantum logic gates. However, the electric dipole-dipole interaction between molecules can not be controllably swit...
A molecule adsorbed on a metal surface carries an electric dipole moment, and diffuses on the surface. When a collection of identical molecules partially covers the surface, the dipole–dipole interactions, along with other thermodynamic forces, drive the molecules to aggregate into monolayer islands, in the shape of dots or stripes. The dipole– dipole interactions mediate through the electrosta...
In contrast to van der Waals (vdW) forces, Coulombic dipolar forces may play a significant role in the coagulation of nanoparticles (NPs) but has received little or no attention. In this work, the effect of dipole-dipole interaction on the enhancement of the coagulation of two spherically shaped charge-neutral TiO(2) NPs, in the free molecular regime, is studied using classical molecular dynami...
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