Correlated electromigration of H in the switchable mirror YH3-delta

The optical method of Den Broeder et al. was extended to study migration of hydrogen vacancies in Y

Gender effects in Dutch research funding: a statistical investigation of the Research Talent Programme 2012-2021

Quantum Matter and Optic

Intrinsic Instability of Aberration-Corrected Electron Microscopes

163901Quantum Matter and Optic

Charge catastrophe and dielectric breakdown during exposure of organic thin films to low-energy electron radiation

Quantum Matter and Optic

Low-energy electron irradiation damage in few-monolayer pentacene films

Quantum Matter and Optic

Titration of submonolayer Au growth on Si(111)

Quantum Matter and Optic

Electron transmission and mean free path in molybdenum disulfide at electron-volt energies

Quantum Matter and Optic

Nanoscale measurements of unoccupied band dispersion in few-layer graphene

The properties of any material are fundamentally determined by its electronic band structure. Each band represents a series of allowed states inside a material, relating electron energy and momentum. The occupied bands, that is, the filled electron states below the Fermi level, can be routinely measured. However, it is remarkably difficult to characterize the empty part of the band structure experimentally. Here, we present direct measurements of unoccupied bands of monolayer, bilayer and trilayer graphene. To obtain these, we introduce a technique based on low-energy electron microscopy. It relies on the dependence of the electron reflectivity on incidence angle and energy and has a spatial resolution ∼10 nm. The method can be easily applied to other nanomaterials such as van der Waals structures that are available in small crystals only.Quantum Matter and Optic