The optimal volume- filling fraction of spheres for the creation of a gap in the photon density of states is found to vary substantially with the relative dielectric constant r, and this gap persists for r as small as 3.Expand

Early life events may serve to influence the differentiation of noradrenergic neurones and thus alter HPA responses stress in adulthood, as examined in adult animals exposed to daily periods of handling or maternal separation over the first 2 weeks of life.Expand

A third-neighbor tight-binding model, with spin-orbit coupling included, is developed, to treat the electronic properties of Bi and Sb quantitatively and should be useful for calculations of the electronic property of proposed semimetal-semiconductor systems, including superlattices and resonant-tunneling devices.Expand

Measurements indicate a correspondence between the shear-induced structural changes the authors measure and a number of well-documented but puzzling observations in the rheological response of the system, which has observed sheer-induced gelation, fracture, and the formation of intricate cyclic patterns caused by an elastic instability.Expand

The plane wave method is used to solve the exact Maxwell's equations without the use of the scalar approximation to calculate the photonic band structure of a face-centered cubic lattice of spheres in a uniform host medium.Expand

In contradiction to recent models by Bak, Tang, and Wiesenfeld for the dynamics of granular systems, the distribution of avalanches is investigated and it is found that the slope of a sandpile decays as $log(t)$ when vibrations are introduced.Expand

A fractal model is proposed for a rough interface between two materials of very different conductivities, e.g., an electrode and an electrolyte, which provides insight into the conducting properties of the percolating cluster and the source of the 1/f noise in electronic components.Expand

The onset of superconductivity in homogeneous ultrathin films is found to occur when their normal-state sheet resistance falls below a value close to h/4e/sup 2/, the quantum resistance for pairs.… Expand

The curvature of the boundary is shown to alter the fluid's slip length, which may even become negative as a result and the microscopically calculated and macroscopically measured slip lengths can be quite different.Expand