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Title: Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts

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 MnO 6 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.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [3]; ORCiD logo [1]
  1. Univ. of Illinois, Chicago, IL (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Drexel Univ., Philadelphia, PA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1531229
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale Advances
Additional Journal Information:
Journal Volume: 1; Journal Issue: 1; Journal ID: ISSN 2516-0230
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Amin Shikder, Md Ruhul, Maksud, Mahjabin, Vasudevamurthy, Gokul, Byles, Bryan W., Cullen, David A., More, Karren L., Pomerantseva, Ekaterina, and Subramanian, Arunkumar. Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts. United States: N. p., 2018. Web. doi:10.1039/C8NA00079D.
Amin Shikder, Md Ruhul, Maksud, Mahjabin, Vasudevamurthy, Gokul, Byles, Bryan W., Cullen, David A., More, Karren L., Pomerantseva, Ekaterina, & Subramanian, Arunkumar. Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts. United States. doi:10.1039/C8NA00079D.
Amin Shikder, Md Ruhul, Maksud, Mahjabin, Vasudevamurthy, Gokul, Byles, Bryan W., Cullen, David A., More, Karren L., Pomerantseva, Ekaterina, and Subramanian, Arunkumar. Fri . "Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts". United States. doi:10.1039/C8NA00079D. https://www.osti.gov/servlets/purl/1531229.
@article{osti_1531229,
title = {Brittle fracture to recoverable plasticity: polytypism-dependent nanomechanics in todorokite-like nanobelts},
author = {Amin Shikder, Md Ruhul and Maksud, Mahjabin and Vasudevamurthy, Gokul and Byles, Bryan W. and Cullen, David A. and More, Karren L. and Pomerantseva, Ekaterina and Subramanian, Arunkumar},
abstractNote = {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.},
doi = {10.1039/C8NA00079D},
journal = {Nanoscale Advances},
number = 1,
volume = 1,
place = {United States},
year = {2018},
month = {9}
}

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