David Cooper

TL;DR: It is found that an increase in the overall O vacancy concentration within the device after positive (negative) biasing of the Schottky-type electrode is associated with the electrocatalytic release and reincorporation of oxygen at the electrode/oxide interface and is responsible for the resistance change.

TL;DR: In this article, a precessing of the electron beam makes the diffraction spots more uniform and numerous, making N-PED more robust and precise, and smaller probe size and better precision are achieved by having diffraction disks instead of diffraction dots.

TL;DR: The molecular characterisation of 189 Mycobacterium bovis isolates from nine wildlife species in the HiP, including three smaller associated parks, and the Kruger National Park showed that the respective epidemics were each caused by an infiltration of a single M.bovis genotype.

TL;DR: Dark field electron holography, the geometrical phase analysis of high angle annular dark field scanning transmission electron microscopy images, nanobeam diffraction and precession diffraction, all performed at the state-of-the-art to five different types of semiconductor samples.

TL;DR: The structural and optical properties of InGaN/GaN nanowire heterostructures grown by plasma-assisted molecular beam epitaxy have been studied using a combination of transmission electron microscopy, electron tomography and photoluminescence spectroscopy.