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3 October 2022 Optical measurements of the picosecond fluid mechanics generated by vibrating nanostructures
Matthew A. Pelton
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Proceedings Volume PC12198, Optical Trapping and Optical Micromanipulation XIX; PC121980F (2022) https://doi.org/10.1117/12.2635262
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
Two common assumptions for simple molecular liquids are that they exhibit a Newtonian response and the no-slip boundary condition at solid-liquid interfaces. By making ultrafast optical measurements of vibrating metal nanoparticles in simple liquids, we have shown that these assumptions can break down on nanometer length scales and on the picosecond time scales that are characteristic of nanoscale motion. Our measurements quantitatively validate a Maxwell model for viscoelasticity in simple, compressible liquids, and provide a measurement of single-nanometer-scale slip lengths at the nanoparticle-liquid interface.
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Matthew A. Pelton "Optical measurements of the picosecond fluid mechanics generated by vibrating nanostructures", Proc. SPIE PC12198, Optical Trapping and Optical Micromanipulation XIX, PC121980F (3 October 2022); https://doi.org/10.1117/12.2635262
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KEYWORDS
Liquids
Picosecond phenomena
Mechanics
Optical testing
Nanostructures
Interfaces
Nanoparticles
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