Nonlinear viscoelasticity of freestanding and polymer-anchored vertically aligned carbon nanotube foams

High density, vertically-aligned carbon nanotube membranes.

A method is presented to prepare high-density, vertically aligned carbon nanotube (VA-CNT) membranes. The CNT arrays were prepared by chemical vapor deposition (CVD), and the arrays were collapsed into dense membranes by capillary-forces due to solvent evaporation. The average space between the CNTs after shrinkage was approximately 3 nm, which is comparable to the pore size of the CNTs. Thus, ...

Phase and thickness dependent modulus of Ge2Sb2Te5 films down to 25 nm thickness

Related Articles Dynamic nanomechanics of zinc oxide nanowires Appl. Phys. Lett. 100, 163110 (2012) Surface elasticity effect on the size-dependent elastic property of nanowires J. Appl. Phys. 111, 083506 (2012) Nonlinear viscoelasticity of freestanding and polymer-anchored vertically aligned carbon nanotube foams J. Appl. Phys. 111, 074314 (2012) Surface polar states and pyroelectricity in fer...

Multiscale Mass-Spring Model for High-Rate Compression of Vertically Aligned Carbon Nanotube Foams

We present a one-dimensional, multiscale mass-spring model to describe the response of vertically aligned carbon nanotube (VACNT) foams subjected to uniaxial, high-rate compressive deformations. The model uses mesoscopic dissipative spring elements composed of a lower level chain of asymmetric, bilateral, bistable elastic springs to describe the experimentally observed deformation-dependent str...

Strain rate effects in the mechanical response of polymer anchored carbon nanotube foams

Conjugated polymer chain and crystallite orientation induced by vertically aligned carbon nanotube arrays.

We report a method for controlling the orientations of conjugated polymers in the active layer of organic thin-film transistors (OTFTs) by annealing the film at the melting temperature in a vertically aligned multiwalled carbon nanotube (VA-CNT) template under various load pressures. Poly(3-hexylthiophene) [P3HT] molecules are effectively aligned in the melting state annealing at 240 °C for 30 ...