Oxidation induced softening in Al nanowires

Fatih G. Sen, Yue Qi, Adri C T Van Duin, Ahmet T. Alpas

Research output: Research - peer-reviewArticle

  • 19 Citations

Abstract

The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized Al nanowires. The thin amorphous oxide shell formed around Al nanowires had a very low Young's modulus of 26 GPa, due to its low density and low Al-O coordination. Consequently, for diameters less than 100 nm, the composite Young's modulus of oxide-covered Al nanowires showed a size dependence implying that in this case "smaller is softer." The model developed also explained the discrepancies in the reported modulus values of nanometer-scale Al thin films.

LanguageEnglish (US)
Article number051912
JournalApplied Physics Letters
Volume102
Issue number5
DOIs
StatePublished - Feb 4 2013
Externally publishedYes

Profile

softening
nanowires
oxidation
modulus of elasticity
oxides
tensile deformation
elastic deformation
meteorology
mechanical properties
molecular dynamics
composite materials
thin films
simulation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Sen, F. G., Qi, Y., Van Duin, A. C. T., & Alpas, A. T. (2013). Oxidation induced softening in Al nanowires. Applied Physics Letters, 102(5), [051912]. DOI: 10.1063/1.4790181

Oxidation induced softening in Al nanowires. / Sen, Fatih G.; Qi, Yue; Van Duin, Adri C T; Alpas, Ahmet T.

In: Applied Physics Letters, Vol. 102, No. 5, 051912, 04.02.2013.

Research output: Research - peer-reviewArticle

Sen, FG, Qi, Y, Van Duin, ACT & Alpas, AT 2013, 'Oxidation induced softening in Al nanowires' Applied Physics Letters, vol 102, no. 5, 051912. DOI: 10.1063/1.4790181
Sen FG, Qi Y, Van Duin ACT, Alpas AT. Oxidation induced softening in Al nanowires. Applied Physics Letters. 2013 Feb 4;102(5). 051912. Available from, DOI: 10.1063/1.4790181
Sen, Fatih G. ; Qi, Yue ; Van Duin, Adri C T ; Alpas, Ahmet T./ Oxidation induced softening in Al nanowires. In: Applied Physics Letters. 2013 ; Vol. 102, No. 5.
@article{5649b1a2842d493aadd150e8d9ce2563,
title = "Oxidation induced softening in Al nanowires",
abstract = "The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized Al nanowires. The thin amorphous oxide shell formed around Al nanowires had a very low Young's modulus of 26 GPa, due to its low density and low Al-O coordination. Consequently, for diameters less than 100 nm, the composite Young's modulus of oxide-covered Al nanowires showed a size dependence implying that in this case {"}smaller is softer.{"} The model developed also explained the discrepancies in the reported modulus values of nanometer-scale Al thin films.",
author = "Sen, {Fatih G.} and Yue Qi and {Van Duin}, {Adri C T} and Alpas, {Ahmet T.}",
year = "2013",
month = "2",
doi = "10.1063/1.4790181",
volume = "102",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Oxidation induced softening in Al nanowires

AU - Sen,Fatih G.

AU - Qi,Yue

AU - Van Duin,Adri C T

AU - Alpas,Ahmet T.

PY - 2013/2/4

Y1 - 2013/2/4

N2 - The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized Al nanowires. The thin amorphous oxide shell formed around Al nanowires had a very low Young's modulus of 26 GPa, due to its low density and low Al-O coordination. Consequently, for diameters less than 100 nm, the composite Young's modulus of oxide-covered Al nanowires showed a size dependence implying that in this case "smaller is softer." The model developed also explained the discrepancies in the reported modulus values of nanometer-scale Al thin films.

AB - The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized Al nanowires. The thin amorphous oxide shell formed around Al nanowires had a very low Young's modulus of 26 GPa, due to its low density and low Al-O coordination. Consequently, for diameters less than 100 nm, the composite Young's modulus of oxide-covered Al nanowires showed a size dependence implying that in this case "smaller is softer." The model developed also explained the discrepancies in the reported modulus values of nanometer-scale Al thin films.

UR - http://www.scopus.com/inward/record.url?scp=84874066795&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874066795&partnerID=8YFLogxK

U2 - 10.1063/1.4790181

DO - 10.1063/1.4790181

M3 - Article

VL - 102

JO - Applied Physics Letters

T2 - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 5

M1 - 051912

ER -