The picosecond ultrasonics technique to probe atomic bonds and vdW forces in In2Se3. In the experiment, blue-coloured pump laser pulses are shone on a flake of 2D material, and red-coloured probe laser pulses are used to probe the strength of atomic bonds. (Courtesy: Wenjing Yan, University of Nottingham)
A new ultrasound technique that measures the strength of atomic bonds within two-dimensional (2D) ma
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Isabelle Dumé
is a contributing editor to Physics World