Weak Shock Waves on a Chip: Generation and Applications

In conventional laser-shock experiments in solid media, shock waves are typically excited from the ablation of a photoacoustic transducer layer deposited onto the sample of interest. Unavoidably, the target materials are damaged. This leads to the necessity of changing targets after each exposure, likely lowering the shot-to-shot reproducibility and data quality, while lowering the throughput of the experiment. Motivated by the need to generate large-amplitude transient strain waves at a high repetition rate, this thesis introduces a novel platform for the non-destructive generation and amplification of acoustic waves with associated strain levels in the percent range — up to the formation of shock waves. The acoustic amplification scheme is first described. Then, owing to the capabilities of the technique to repeatedly load a material with finite-amplitude strain waves, a demonstration of the use of the platform for microscale fatigue testing is made. Finally, the strain localization of surface acoustic waves is leveraged by transiently modulating a monolayer of a transition metal dichalcogenide deposited on a substrate.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Chemistry

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2025

Author dc:creator

• Deschamps, Jude

Advisor dc:contributor.advisor

• Nelson, Keith A.

Statement dc:rights

• Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
• Copyright retained by author(s)

Licence dc:rights.uri

• https://creativecommons.org/licenses/by-nc-sa/4.0/

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/158942

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/158942