Journal article
Strain fields in repulsive colloidal crystals
Physical review materials, v 2(6), 063604
22 Jun 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The concept of a local linear elastic strain field is commonly used in the metallurgical research community to approximate the collective effect of atomic displacements around crystalline defects. Here we show that the elastic strain field approximation is a useful tool in colloidal systems. For colloidal crystals with repulsive particle interaction potentials, given similar mechanical properties, sharper potentials lead to (1) free energies of deformation dominated by entropy, (2) lower variance in strain field fluctuations, (3) increased tension-compression asymmetry near dislocation core regions, and (4) smaller windows of applicability of the linear elastic approximation. We show that the window of linear behavior for entropic colloidal crystals is broadened for pressures at which the interparticle separation sufficiently exceeds the range of steep repulsive interactions.
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Details
- Title
- Strain fields in repulsive colloidal crystals
- Creators
- Bryan VanSaders - University of MichiganJulia Dshemuchadse - University of MichiganSharon C. Glotzer - University of Michigan
- Publication Details
- Physical review materials, v 2(6), 063604
- Publisher
- Amer Physical Soc
- Number of pages
- 7
- Grant note
- DMR 1409620 / National Science Foundation, Division of Materials Research Award; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000436043500001
- Scopus ID
- 2-s2.0-85056122644
- Other Identifier
- 991021877483604721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary