David J. Ward

TL;DR: In this article, the authors present experimental results combined with ab initio calculations to provide a detailed insight into the behavior of water monomers on a graphene surface, showing that motion occurs by activated hopping on the graphene lattice.

TL;DR: Data showing contrast resulting from specular reflection and diffraction of helium atoms from an atomic lattice of lithium fluoride suggests the viability of the approach for imaging with diffraction contrast and suggests application to a wide variety of other locally crystalline materials.

TL;DR: A ray tracing method for predicting contrast in atom beam imaging that has a broad range of potential applications with similar instruments, including understanding imaging from different sample topographies, refinement of a particular microscope geometry to enhance specific forms of contrast, and relating scattered intensity distributions to experimental measurements.

TL;DR: In this article, the authors explore the contrast that arises from multiple scattering of helium atoms, a specific process that plays an important role in forming topographic contrast in scanning helium microscopy (SHeM) images.