Structural transformations during periodic deformation of low-porosity amorphous materials

Structural Anisotropy of Amorphous Alloys Induced by Mechanical Creep Deformation

Porosity of Low-κ Materials Studied by Slow Positron Beam

Until the past few years, aluminium was used in semiconductor technology as interconnect metal and silicon dioxide (SiO2, κ = 3.9) as the interand intra-level insulator. With the demand of scaling the dimension of advanced integrated circuits well below the 100 nm DRAM 1/2 pitch technology node [1], the signal delay (resistance–capacitance RC delay) becomes one limitation in increasing the spee...

Low porosity metallic periodic structures with negative Poisson's ratio.

Auxetic behavior in low porosity metallic structures is demonstrated via a simple system of orthogonal elliptical voids. In this minimal 2D system, the Poisson's ratio can be effectively controlled by changing the aspect ratio of the voids. In this way, large negative values of Poisson's ratio can be achieved, indicating an effective strategy for designing auxetic structures with desired porosity.

Low-pressure silica injection for porosity reduction in cementitious materials

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Architected Materials with Ultra-Low Porosity for Vibration Control.

Periodic structures with extremely low porosities capable of forming large band gaps-frequency ranges with strong wave attenuation-are designed by patterning an elastic sheet with an array of alternating crack-like pores separated by small ligaments. The results indicate that the presence and size of the band gaps are controlled by the smallest geometric -feature in the system (which can be eas...