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diffusion

Water diffusion and fracture behavior in nano-porous low-k dielectric film stacks

Submitted by Li Han on
research
fracture
porous
low-k dielectric
diffusion
Among various low-dielectric constant low-k materials under development, organosilicate glasses
OSGs containing nanometer-size pores are leading candidates for use as intrametal dielectrics in
future microelectronics technologies. In this paper, we investigate the direct impact of water
diffusion on the fracture behavior of film stacks that contain porous OSG coatings. We demonstrate
that exposure of the film stacks to water causes significant degradation of the interfacial adhesion

A theory of coupled diffusion and large deformation in polymeric gels

Submitted by Wei Hong on
research
suo group research
hydrogel
diffusion
gel

   A large quantity of small molecules may migrate into a network of long polymers, causing the network to swell, forming an aggregate known as a polymeric gel.  This paper formulates a theory of the coupled mass transport and large deformation.

Journal Club Theme of July 2007: Mechanics of Hydrogels

Submitted by H Jerry Qi on
research
interface
viscoelasticity
Journal Club Forum
hydrogel
diffusion
swelling

Before we start this issue of J-club, I would like to recommend Prof. Langer's lecture for his MRS Von Hippel Award in the 2005 MRS Fall Meeting (Langer, 2006). His lecture not only delineated the history of the new exciting field of drug delivery and controlled release, but also told us many interesting stories happened in his career development. With Prof. Langer's pioneer work, many new materials are developed for designing new drug delivery and controlled drug release systems.

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