Science and Engineering

Stanford University

David Reis, Philip Bucksbaum, Shanhui Fan, Jelena Vuckovic, Olav Solgaard
Palo Alto, CA
December 2017


Advanced technology increasingly relies on the precise control of atomic-scale heterogeneity to manipulate electrons, photons and phonons on ever smaller distances and faster times.  A team of five researchers at Stanford University will push the scientific frontier of atomic-scale dynamical imaging by scaling the newly discovered phenomena of solid-state high-harmonic generation to nanoscale dimensions and high-repetition rates.  Single emitters of coherent extreme ultraviolet radiation will be incorporated into near-field probes to provide sub-nanometer and sub-femtosecond resolution.  This novel instrument will be used to visualize how an atomically sharp 1-D junction between two 2-D materials alters the energy—and therefore the transport—of electrons nearby.  The spatial extent of the strong, yet widely-tunable many-body interactions in these materials determines the device’s smallest size and fastest speed.  Until now there has been no way to image the materials response on short enough length and time scales to view the formation length and evolution of electronic states across a single junction.  The instrument could also be used to record other dynamical processes that require extreme spatial and temporal resolution, including nanoscale energy conversion, heterogeneous catalysis and quantum information storage and processing using single defects.

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