Journal article
Brittle fracture to recoverable plasticity: Polytypism-dependent nanomechanics in todorokite-like nanobelts
01 Jan 2021
PMID: 36132478
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Atomic force microscopy (AFM) based nanomechanics experiments involving polytypic todorokite-like manganese dioxide nanobelts reveal varied nanomechanical performance regimes such as brittle fracture, near-brittle fracture, and plastic recovery within the same material system. These nanobelts are synthesized through a layer-to-tunnel material transformation pathway and contain one-dimensional tunnels, which run along their longitudinal axis and are enveloped by m × 3 MnO6 octahedral units along their walls. Depending on the extent of material transformation towards a tunneled microstructure, the nanobelts exhibit stacking disorders or polytypism where the value for m ranges from 3 to up to ∼20 within different cross-sectional regions of the same nanobelt. The observation of multiple nanomechanical performance regimes within a single material system is attributed to a combination of two factors: (a) the extent of stacking disorder or polytypism within the nanobelts, and (b) the loading (or strain) rate of the AFM nanomechanics experiment. Controllable engineering of recoverable plasticity is a particularly beneficial attribute for advancing the mechanical stability of these ceramic materials, which hold promise for insertion in multiple next-generation technological applications that range from electrical energy storage solutions to catalysis.
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Details
- Title
- Brittle fracture to recoverable plasticity: Polytypism-dependent nanomechanics in todorokite-like nanobelts
- Creators
- Ruhul Amin ShikderM. MaksudGokul VasudevamurthyBryan W. BylesDavid A. CullenKarren L. MoreEkaterina PomerantsevaArunkumar Subramanian
- Publisher
- University of Illinois at Chicago
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000479164600040
- Other Identifier
- 991021811628904721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology