Full-field imaging of thermal and acoustic dynamics in an individual nanostructure using tabletop high harmonic beams.

ABSTRACT: Imaging charge, spin, and energy flow in materials is a current grand challenge that is relevant to a host of nanoenhanced systems, including thermoelectric, photovoltaic, electronic, and spin devices. Ultrafast coherent x-ray sources enable functional imaging on nanometer length and femtosecond timescales particularly when combined with advances in coherent imaging techniques. Here, we combine ptychographic coherent diffractive imaging with an extreme ultraviolet high harmonic light source to directly visualize the complex thermal and acoustic response of an individual nanoscale antenna after impulsive heating by a femtosecond laser. We directly image the deformations induced in both the nickel tapered nanoantenna and the silicon substrate and see the lowest-order generalized Lamb wave th

SUBMITTER: Karl RM 

PROVIDER: S-EPMC6195334 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature