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Journal article
Tunable mechanical properties and air-based lubrication in an acoustically levitated granular material: Tunable mechanical properties and air-based lubrication in an acoustically
Granular matter, v 27(1), 20
2025
Abstract
Cohesive granular materials are found in many natural and industrial environments, but experimental platforms for exploring the innate mechanical properties of these materials are often limited by the difficulty of adjusting cohesion strength. Granular particles levitated in an acoustic cavity form a model system to address this. Such particles self-assemble into free-floating, quasi-two-dimensional raft structures which are held together by acoustic scattering forces; the strength of this attraction can be changed simply by modifying the sound field. We investigate the mechanical properties of acoustically bound granular rafts using substrate-free micro-scale shear tests. We first demonstrate deformation of rafts of spheres and the dependence of this deformation on acoustic pressure. We then apply these methods to rafts composed of anisometric sand grains and smaller spheres, in which the smaller spheres have a thin layer of air separating them from other grain surfaces. These spheres act as soft, effectively frictionless particles that populate the interstices between the larger grains, which enables us to investigate the effect of lubricating the mixture in the presence of large-grain cohesion.
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Details
- Title
- Tunable mechanical properties and air-based lubrication in an acoustically levitated granular material
- Creators
- Nina M. Brown - University of ChicagoBryan VanSaders - University of ChicagoJason M. Kronenfeld - Stanford UniversityJoseph M. DeSimone - Stanford UniversityHeinrich M. Jaeger - University of Chicago
- Publication Details
- Granular matter, v 27(1), 20
- Publisher
- Springer Berlin Heidelberg; NEW YORK
- Number of pages
- 10
- Grant note
- DMR-2104733; DMR-2104733; DMR-2104733 / Division of Materials Research (http://dx.doi.org/10.13039/100000078) DGE-1656518 / Division of Graduate Education (http://dx.doi.org/10.13039/100000082) W911NF-21-2-0146 / Army Research Office (http://dx.doi.org/10.13039/100000183)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:001385138500001
- Scopus ID
- 2-s2.0-85213080789
- Other Identifier
- 991022006295904721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Mechanics
- Physics, Applied