Kavli Affiliate: Chiara Daraio
| First 5 Authors: Alexander C. Ogren, Alexander C. Ogren, , ,
| Summary:
Wave propagation on the surface of a material contains information about
physical properties beneath its surface. We propose a method for inferring the
thickness and stiffness of a structure from just a video of waves on its
surface. Our method works by extracting a dispersion relation from the video
and then solving a physics-based optimization problem to find the best-fitting
thickness and stiffness parameters. We validate our method on both simulated
and real data, in both cases showing strong agreement with ground-truth
measurements. Our technique provides a proof-of-concept for at-home health
monitoring of medically-informative tissue properties, and it is further
applicable to fields such as human-computer interaction.
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