Weak Shock Waves on a Chip: Generation and Applications
Name
deschamps-jdesch-phd-chemistry-2025-thesis.pdf
Description
Thesis PDF
Size
9.7 MB
Format
Adobe PDF
Checksum (MD5)
fe88e07d5168baf29522f8ae71b7cedb
Author(s)
Deschamps, Jude
Advisor(s)
Nelson, Keith A.
Date Issued
February 2025
Publisher
Massachusetts Institute of Technology
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Copyright retained by author(s)
Persistent DSpace Link
