The thermal front accompanying recalescence of undercooled pure nickel melts was characterized using a high speed digital imaging technique. Nucleation was either spontaneous or was stimulated using a physical trigger to induce heterogeneous nucleation at a known site at the desired undercooling. Undercoolings ranged from 30 to 300 *C, with measured velocities between 0.3 and 50 rn/sec using a ...

Prediction of the nucleation mechanism is one of the most critical factors in the design of a crystallization system. Information about the nucleation mechanism helps to control the size, shape, size distribution, and purity of the produced crystals. When the crystallization method is used for producing nanoparticles, the nucleation mechanism should be predicted. In this study, an empirical cor...

This study is devoted to the long-term behavior of nucleation, growth and fragmentation equations, modeling the spontaneous formation and kinetics of large polymers in a spatially homogeneous and closed environment. Such models are, for instance, commonly used in the biophysical community in order to model in vitro experiments of fibrillation. We investigate the interplay between four processes...

We review models for the nucleation of magnetisation reversal, i.e. the formation of a region of reversed magnetisation in an initially magnetically saturated system. For small particles models for collective reversal, either uniform (Stoner-Wohlfarth model) or non-uniform like curling give good agreement between theory and experiment. For microscopic objects and thin films, we consider two mod...

We formulate and analyse a 1D model for the spatial distribution of actin density at the leading edge of a motile cell. The model incorporates nucleation, capping, growth and decay of actin filaments, as well as retrograde flow of the actin meshwork and known parameter values based on the literature. Using a simplified geometry, and reasonable assumptions about the biochemical processes, we der...

We investigated the formation of large-grain polycrystalline silicon films on glass substrates for application in low-cost thin film crystalline silicon solar cells. Since the use of glass substrates constrains process temperatures, our chosen approach to form large-grain polycrystalline silicon templates is selective nucleation and solid phase epitaxy (SNSPE). In this process, selective crysta...

We studied electric field modification of magnetic properties in a Pt/Co/AlO$_x$ trilayer via magneto-optical Kerr microscopy. observed the spontaneous formation labyrinthine domain structure due to thermally activated nucleation and propagation under zero applied field. A variation period is as well saturation magnetization anisotropy variations. Using an analytical formula stripe equilibrium ...

In this paper an isotropic multi-phase-field model is extended to include the effects of anisotropy and the spontaneous nucleation of an absent phase. This model is derived and compared against a published single phase model. Results from this model are compared against results from other multi-phase models, additionally this model is used to examine the break down of a regular two dimensional ...

Single crystals of pure and A1 and Zn Ti substituted X Fe1201g Hexaferrite (X = Sr or Ba) have been grown from different solvents by spontaneous nucleation growth method. Strong improvement in crystal size was obtained using Naz0 Fez03 flux. Ferrimagnetic resonance measurements (FMR) versus frequency and temperature were made in the millimeter wavelength range. The contribution of the intrinsic...