We show that dipole-dipole interactions induced by gravitational force and possibly ion-stream drag force give rise to stable triangular and oriented cubic crystalline structures recently observed in a dusty plasma, as opposed to only unoriented cubic close-packed structures usually expected of Wigner crystals. In certain cases the dipole interaction may flatten the crystal significantly. We ca...

Recently the author reported the feasibility of envisioning a scenario where a massive permanent magnetic dipole bounces off and oscillates about an invisible horizontal magnetic net in the presence of gravity. The scenario has been revisited, modifying its physical contents. The modification embodies analysis of the impact of the induced current due to the falling magnetic dipole. The induced ...

The ac Stark effect was used to induce resonant energy transfer between translationally cold 85Rb Rydberg atoms. When a 28.5 GHz dressing field was set at specific field strengths, the two-atom dipole-dipole process 43d5/2+43d5/2-->45p3/2+41f was dramatically enhanced, due to induced degeneracy of the initial and final states. This method for enhancing interactions is complementary to dc electr...

We investigate the optical response of gold nanorod (AuNR) dimers assembled in parallel on a DNA origami template. Plasmonic circular dichroism (CD) was found to be highly dependent on the orientation of the dimers relative to the DNA axis and the inter-rod distances. Dipole-dipole distances play a critical role in the induced plasmonic chirality. The orientation dependence of induced CD was fu...

Absorption and luminescence excitation spectra of Xe/CF(4) mixtures were studied in the vacuum UV region at high resolution using tunable synchrotron radiation. Pressure-broadened resonance bands and bands associated with dipole-forbidden states of the Xe atom due to collision-induced breakdown of the optical selection rules are reported. The spectra display in addition numerous satellite bands...

We study, in the presence of an external electrostatic field, interatomic interaction between two ground-state atoms coupled with vacuum electromagnetic fluctuations within dipole coupling approximation based on perturbation theory. show that, up to fourth order, electrostatic-field-induced is just classical dipole-dipole interaction, which disagrees recent result from Fiscelli et al. [G. al., ...

The interactions of the polarization-induced dipole moments at each unit cell in InxGa12xN alloys have been studied using analytical electrostatic dipole energy calculations to determine their potential influence on local material composition. Clustering of In atoms along the @0001# direction and anticlustering of In in the ~0001! plane are shown to be energetically favorable. Comparisons of th...

Emission and absorption spectra of many organic dyes in liquid solutions depend on the local electric fields generated by the surrounding polar solvent molecules. This “solvation effect” is a result of intermolecular solutesolvent interaction forces (such as dipole-dipole or dipole-induced dipole) that tend to stretch molecular bonds and shift charge distribution on molecules, altering the ener...

Electromechanical properties of ferroelectric thin films are investigated using a two-dimensional four-state Potts model and Monte Carlo simulation. In this model, the mechanical energy density induced by strains of individual cells is included in the system Hamiltonian, in addition to the contributions from dipole-dipole and electric-field-dipole couplings. Moreover, the dipole of each individ...

Small-x evolution in QCD is conveniently described by Mueller’s dipole model which, however, does not include saturation effects in a way consistent with boost invariance. In this paper we first show that the recently studied zero and one dimensional toy models exhibiting saturation and explicit boost invariance can be interpreted in terms positive definite k → k + 1 dipole vertices. Such k → k...