R.C. Pond

TL;DR: In this article, a new definition of scalar step heights is presented in terms of crystallographic parameters, where the dislocation portion is associated with the long-range strain field and shape change, and the step portion with divergences in diffusional fluxes associated with growth.

TL;DR: In this article, the properties of twinning dislocations in hexagonal-close-packed metals have been investigated by atomic-scale computer simulation and the dependence of dislocation energy on the atomic structure of the core has been investigated.

TL;DR: In this paper, in situ observations of the hcp (α) to bcc (β) phase transformation in commercially pure titanium at 882 °C using SEM imaging concurrent with crystal orientation determination using EBSD are presented showing the early stages of the growth of β plates within α grains and allotriomorphic β along α-α grain boundaries.

TL;DR: In this paper, the authors investigated the structural properties of hexagonal-close-packed metals using computer simulation techniques and found that the core structures, in particular the core widths, are very sensitive to the interatomic potential used and can be extremely wide for the (1012) and (1121) boundaries.

TL;DR: In this article, the surface chemistry and wettability of polytetrafluoroethylene (PTFE) was studied in a low power plasma using a series of feed gases (O 2, Ar, N 2, N 2 and NH 3 ) and the resulting surface modifications were evaluated by x-ray photoelectron spectroscopy, static secondary ion mass spectra, dynamic contact angle measurements and atomic force microscopy.