  Two dimensional materials offer a path forward for smaller and more efficient
devices. Their optical and electronic properties give way to beat the limits
set in place by Moore's Law. Plasmon are the collective oscillations of
electrons and can confine light to dimensions much smaller than its wavelength.
In this work we explore the plasmonic properties of MoS2, a representational
candidate from a family of 2D materials known as transition metal
dichalcogenides. High resolution electron microscopy and spectroscopy provide
insights in the plasmonic properties of MoS2 down to an atomic scale.
Experimental results show the relationship between plasmons and interband
transitions in the electron energy loss spectrum. Density functional theory
provides a theoretical support for the experimental findings and provides
commentary on the fundamental underlying physics.

Mesoscale and Nanoscale Physics