Probing capped and uncapped mesoporous low-dielectric constant films using positron annihilation lifetime spectroscopy

Abstract

Synthesis of organically modified mesoporous silica as a low dielectric constant intermetal dielectric

Positron annihilation and free volume studies in polymer glasses

“…[10][11][12][13][14] In the classical methods of porosity studies, like liquid nitrogen adsorption-desorption, the results are presented on the assumption of a pore structure as a bundle of capillaries, that is, having elongated form. In some approximation, such a capillary can be approximated by cylinders or cuboids.…”

Dielectric constant of porous ultra low-k dielectrics by fractal-Monte Carlo simulations

“…Pores in porous media are usually irregular and complicated, and they may be interconnected [22,24] or isolated [23,24]. In this work, we choose cube as the pore shape for simplicity.…”

Porosity characterization of aerogels using positron annihilation lifetime spectroscopy

“…By utilizing this broad range, PALS has emerged as a powerful tool for measuring the pore size in various materials [10][11][12][13][14]. Within the scope of free-volume theories, the o-Ps particle is bound inside a pore region.…”