Mechanical characterization of hyperelastic polydimethylsiloxane by simple shear test

Mechanical characterization of magnetic nanowire–polydimethylsiloxane composites

One-dimensional magnetic nanowires have been introduced into polydimethylsiloxane PDMS to form polymer based nanocomposites. In contrast to the conventional nanofillers such as carbon nanotubes, carbon nanofibers, nanoparticles, and layer-structured materials, these well-defined anisotropic metallic nanowires are highly conductive and have much weaker van der Waals interactions. Moreover, compo...

Mechanical characterization of brain tissue in simple shear at dynamic strain rates.

During severe impact conditions, brain tissue experiences a rapid and complex deformation, which can be seen as a mixture of compression, tension and shear. Diffuse axonal injury (DAI) occurs in animals and humans when both the strains and strain rates exceed 10% and 10/s, respectively. Knowing the mechanical properties of brain tissue in shear at these strains and strain rates is thus of parti...

On the symmetries of certain hyperelastic simple liquid crystals.

Controlled Mechanical Cracking of Metal Films Deposited on Polydimethylsiloxane (PDMS)

Stretchable large area electronics conform to arbitrarily-shaped 3D surfaces and enables comfortable contact to the human skin and other biological tissue. There are approaches allowing for large area thin films to be stretched by tens of percent without cracking. The approach presented here does not prevent cracking, rather it aims to precisely control the crack positions and their orientation...

Note: Mechanical study of micromachined polydimethylsiloxane elastic microposts.

This paper reports the detailed statistical measurement of Young's modulus (E) and spring constant of micromachined three-dimensional polydimethylsiloxane microposts with various sizes using atomic force microscope. The paper also describes the design and fabrication of these microposts. The micropost array was fabricated with a height to diameter aspect ratio of up to 10. We have found that po...