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Coupled effect of size, strain rate, and temperature on the shape memory of a pentagonal Cu nanowire.
Nanotechnology. 2009 Jan 28; 20(4):045701.N

Abstract

A body-centered pentagonal nanobridge structure with lattice constants c = 2.35 and a = 2.53 A has been observed under high strain rate tensile loading on an initially constrained [Formula: see text] Cu nanowire at various temperatures. Extensive molecular dynamics (MD) simulations have been performed using the embedded atom method (EAM) for cross-sectional dimensions ranging from 0.723 x 0.723 to 2.169 x 2.169 nm(2), temperature ranging from 10 to 600 K, and strain rates of 10(9)-10(7) s(-1). Formations of such pentagonal nanowire are observed for a temperature range 200-600 K for particular cross-sectional dimensions and strain rates. A large inelastic deformation of approximately 50% is obtained under both isothermal loading and adiabatic loading. With very high degree of repeatability of such pentagonal nanowire formation, the present findings indicate that the interesting stability property and high strength of elongated nanowires have various potential applications in nanomechanical and nanoelectronic devices. Further, we demonstrate a novel thermomechanical unloading mechanism by which it is possible to impart recovery from a pentagonal nanowire following a hysteresis loop: [Formula: see text].

Authors+Show Affiliations

Mechanical Engineering Design Division, Aeronautical Development Establishment, Defence Research and Development Organization, Bangalore 560075, India.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19417327

Citation

Sutrakar, Vijay Kumar, and D Roy Mahapatra. "Coupled Effect of Size, Strain Rate, and Temperature On the Shape Memory of a Pentagonal Cu Nanowire." Nanotechnology, vol. 20, no. 4, 2009, p. 045701.
Sutrakar VK, Mahapatra DR. Coupled effect of size, strain rate, and temperature on the shape memory of a pentagonal Cu nanowire. Nanotechnology. 2009;20(4):045701.
Sutrakar, V. K., & Mahapatra, D. R. (2009). Coupled effect of size, strain rate, and temperature on the shape memory of a pentagonal Cu nanowire. Nanotechnology, 20(4), 045701. https://doi.org/10.1088/0957-4484/20/4/045701
Sutrakar VK, Mahapatra DR. Coupled Effect of Size, Strain Rate, and Temperature On the Shape Memory of a Pentagonal Cu Nanowire. Nanotechnology. 2009 Jan 28;20(4):045701. PubMed PMID: 19417327.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Coupled effect of size, strain rate, and temperature on the shape memory of a pentagonal Cu nanowire. AU - Sutrakar,Vijay Kumar, AU - Mahapatra,D Roy, Y1 - 2008/12/19/ PY - 2009/5/7/entrez PY - 2009/5/7/pubmed PY - 2009/5/7/medline SP - 045701 EP - 045701 JF - Nanotechnology JO - Nanotechnology VL - 20 IS - 4 N2 - A body-centered pentagonal nanobridge structure with lattice constants c = 2.35 and a = 2.53 A has been observed under high strain rate tensile loading on an initially constrained [Formula: see text] Cu nanowire at various temperatures. Extensive molecular dynamics (MD) simulations have been performed using the embedded atom method (EAM) for cross-sectional dimensions ranging from 0.723 x 0.723 to 2.169 x 2.169 nm(2), temperature ranging from 10 to 600 K, and strain rates of 10(9)-10(7) s(-1). Formations of such pentagonal nanowire are observed for a temperature range 200-600 K for particular cross-sectional dimensions and strain rates. A large inelastic deformation of approximately 50% is obtained under both isothermal loading and adiabatic loading. With very high degree of repeatability of such pentagonal nanowire formation, the present findings indicate that the interesting stability property and high strength of elongated nanowires have various potential applications in nanomechanical and nanoelectronic devices. Further, we demonstrate a novel thermomechanical unloading mechanism by which it is possible to impart recovery from a pentagonal nanowire following a hysteresis loop: [Formula: see text]. SN - 1361-6528 UR - https://www.unboundmedicine.com/medline/citation/19417327/Coupled_effect_of_size_strain_rate_and_temperature_on_the_shape_memory_of_a_pentagonal_Cu_nanowire_ L2 - https://doi.org/10.1088/0957-4484/20/4/045701 DB - PRIME DP - Unbound Medicine ER -
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