Diffusion-driven microstructure evolution in OpenCalphad

Diffusion and tissue microstructure

Diffusion of molecules in brain and other tissues is important in a wide range of biological processes, such as the delivery of drugs, and for measurements, such as diffusion-weighted magnetic resonance imaging. The time-dependent diffusion coefficient D(t) of mobile molecules confined in pores or cells carries information about the confining geometry. At early times, D(t) gives, irrespective o...

Evolution of Microstructure in Porous

We study the ow of two immiscible uids of diierent density and mobility in a porous medium. If the heavier phase lies above the lighter one, the interface is observed to be unstable. The two phases start to mix on a mesoscopic scale and the mixing zone grows in time | an example of evolution of microstructure. A simple set of assumptions on the physics of this two{phase ow in a porous medium le...

Microstructure Evolution in Damascene Interconnects

We have developed a 3-dimensional computer simulation tool to study the characteristics of microstructure evolution in damascene interconnects. This tool is based on the Monte Carlo method, and the characteristics of the microstructure evolution have a significant impact on the interconnect reliability. Our simulation results show that it may not be possible to obtain a bamboo microstructure th...

Evolution of Microstructure

Diffusion-Driven Instability in Reaction Diffusion Systems

For a stable matrix A with real entries, sufficient and necessary conditions for A D to be stable for all non-negative diagonal matrices D are obtained. Implications of these conditions for the stability and instability of constant steadystate solutions to reaction diffusion systems are discussed and an example is given to show applications. 2001 Academic Press