Catalysts are the primary facilitator in many dynamic processes. Therefore, a thorough
understanding of these processes has vast implications for a myriad of energy systems. The …

Single-atom impurities and other atomic-scale defects can notably alter the local vibrational
responses of solids and, ultimately, their macroscopic properties. Using high-resolution …

Correlation of lattice vibrational properties with local atomic configurations in materials is
essential for elucidating functionalities that involve phonon transport in solids. Recent …

Electron energy loss spectroscopy (EELS) in the electron microscope has progressed
remarkably in the last five years. Advances in monochromator and spectrometer design …

Advances in source monochromation in transmission electron microscopy have opened up
new possibilities for investigations of condensed matter using the phonon-loss sector of the …

Vibrational modes affect fundamental physical properties such as the conduction of sound
and heat and can be sensitive to nano-and atomic-scale structure. Probing the momentum …

The electron energy loss near edge structures (ELNES) appearing in an electron energy
loss spectrum obtained through transmission electron microscopy (TEM) have the potential …

Atomic vibrations control all thermally activated processes in materials, including diffusion,
heat transport, phase transformations and surface chemistry. Recent developments in …

Monochromated electron energy loss spectroscopy (EELS) is one of the leading techniques
to study materials properties that correspond to low (< 5 eV) energy losses (ie. band-gaps …

We demonstrate that a focused beam of high-energy electrons can be used to map the
vibrational modes of a material with a spatial resolution of the order of one nanometer. Our …