An analysis of the crystallographic orientation of polycristalline silicon ingots, obtained by a directional solidification in carbon crucible according to Bridgman method using no seed crystal, is described. The grain growth, in alignment with the higher temperature gradient, produces different crystallized zones in the ingot : an axially columnar structure in the middle and a radial dentritic...

We have developed a new strategy to control the two-dimensional (2D) crystallization of DNA origami by introducing loops on the surface and aligning them in various orientations. Among the orientations tested, vertically connected loops successfully produced the 2D crystal lattice on a micrometer scale, while all other orientations failed.

The mathematical model developed for single-crystalline solidification in laser surface melting (LSM) described in Part I [Acta Mater 2004;52:4833–4847] was used to compute the dendrite growth pattern and velocity distribution in the 3D melt pool for various substrate orientations. LSM experiments with single-crystal nickel-base superalloys were conducted for different orientations to verify th...

The title compound, C(9)H(11)N(3)S(2), exists in the thione form in the crystal structure. The central triazole ring is almost perpendicular to the thio-phene ring which is disordered over two orientations [dihedral angles of 88.5 (7) and 85.7 (8)° for the two orientations]. The crystal structure is stabilized by strong inter-molecular N-H⋯S hydrogen bonds, forming centrosymmetric dimers, and b...

A major challenge in forming polycrystalline aluminum alloy sheets is their strong plastic anisotropy, namely the flow stresses and strains depend on loading direction. This anisotropy due to of constituent crystals preferred orientations that they assume material i.e. crystallographic texture. Recently, [1] we developed a single-crystal yield criterion involves correct number coefficients such...

Abstract Semiconducting iron disilicide ( β -FeSi 2 ) films were epitaxially grown on the Ag-layer pre-coated Si(111) substrates with an initial layer by metal–organic chemical vapor deposition method. These had (101)-preferred orientations, and their crystal quality was improved as growth temperature increased from 893 to 1093 K. The photoluminescence (PL) intensity of (101)-oriented at 973 K ...

The responsiveness of neurons in the primary visual cortex (V1) is substantially reduced after a few seconds of visual stimulation with an effective pattern. This phenomenon, called pattern adaptation, is uniquely cortical and is the likely substrate of a variety of perceptual after-effects. While adaptation to a given pattern reduces the responses of V1 neurons to all subsequently viewed test ...

We consider a correlation-based model for the orientation map formation proposed by Miller [Journal of Neuroscience 14 (1994) 409] and study the formation mathematically. We perform the Fourier transform and compute the principal component of the model. With our analysis, the roles of functions are clarified and the result indicates that the developed orientation maps have the following propert...