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Real-time imaging of acoustic waves in bulk materials with X-ray microscopy by Holstad, Theodor S.; Dresselhaus-Marais, Leora E.; Ræder, Trygve Magnus; Kozioziemski, Bernard; van Driel, Tim; Seaberg, Matthew; Folsom, Eric; Eggert, Jon H.; Knudsen, Erik Bergbäck; Nielsen, Martin Meedom; Simons, Hugh; Haldrup, Kristoffer; Poulsen, Henning Friis is a scholarly article available to read on EtoBox.

What is Real-time imaging of acoustic waves in bulk materials with X-ray microscopy about?

Materials modelling and processing require experiments to visualize and quantify how external excitations drive the evolution of deep subsurface structure and defects that determine properties. Today, 3D movies with ~100-nm resolution of crystalline structure are regularly acquired in minutes to hours using X-ray diffraction based imaging. We present an X-ray microscope that improves this time resolution to <100 femtoseconds, with images attainable even from a single X-ray pulse. Using this, we resolve the propagation of 18-km/s acoustic waves in mm-sized diamond crystals, and demonstrate how mechanical energy thermalizes from picosecond to microsecond timescales. Our approach unlocks a vast range of new experiments of materials phenomena with intricate structural dynamics at ultrafast timescales.

Author

Holstad, Theodor S.; Dresselhaus-Marais, Leora E.; Ræder, Trygve Magnus; Kozioziemski, Bernard; van Driel, Tim; Seaberg, Matthew; Folsom, Eric; Eggert, Jon H.; Knudsen, Erik Bergbäck; Nielsen, Martin Meedom; Simons, Hugh; Haldrup, Kristoffer; Poulsen, Henning Friis

Published

2022

Language

EN