We have demonstrated a new protocol of synthesizing Ag nanowires via an electrochemical Ostwald ripening (OR) driven branch fragmentation mechanism; the branching rate of the Ag nanowires is significantly decreased by means of an electrodeposition under a strong applied-potential, following a relaxation process.

Diffusion-controlled coarsening (Ostwald ripening) of precipitated Solutions is studied by numerical Simulation. An algorithm is devised which exploits the screening of solute concentration fields, thereby removing the restriction to small Systems of previous work. Simulation of the coarsening of 5000 droplets at 10% volume fraction reveals long-ranged dynamical correlations which broaden the d...

Ostwald ripening is a well-known physicochemical phenomenon in which smaller particles, characterized by high surface energy, dissolve and feed the bigger ones that are thermodynamically more stable. The effect commonly observed solid liquid solutions, as well systems consisting of supported metal clusters or droplets. Here, evidence provided for occurrence an oxide-on-metal system which, this ...

Annealing or growth at high temperatures for an extended period of time is considered detrimental for most synthetic strategies for high-quality Mn-doped II-VI semiconductor nanocrystals. It can lead to the broadening of size distribution and, more importantly, to the loss of dopants. Here, we examine how ripening can be beneficial to doping in a simple "heat-up" approach, where high dopant con...

Introduction: Knowledge of how crystals grow is of fundamental importance for interpreting textures observed in meteorites. However, data on crystal growth of rock-forming silicates for a very small degree of undercooling (< 1°C) are extremely rare. Recently [1], it was demonstrated that these very small degrees of undercooling could be experimentally approached by studying the kinetic of Oswal...

A mesoscale model is proposed to characterize coarsening of platinum-based catalyst particles with the aim understanding cathode degradation and power loss in proton exchange membrane fuel cells (PEMFC). The microstructure a layer more complex than ones typically described by Ostwald-ripening models, such as Lifshitz Slyozov Wagner (LSW) theory or diffuse interface models. Our captures dissolut...