Surface-stress-induced phase transformation in metal nanowires

ABSTRACT Several researchers1,2,3,4,5,6,7,8 have demonstrated, through experiments and analysis, that the structure and properties of nanometre-scale materials can be quite different to

those of bulk materials due to the effect of surfaces. Here we use atomistic simulations to study a surface-stress-induced phase transformation in gold nanowires. The emergence of the

transformation is controlled by wire size, initial orientation, boundary conditions, temperature and initial cross-sectional shape. For a <100> initial crystal orientation and wire

cross-sectional area below 4 nm2, surface stresses alone cause gold nanowires to transform from a face-centred-cubic structure to a body-centred-tetragonal structure. The transformation

occurs roughly when the compressive stress caused by tensile surface-stress components in the length direction exceeds the compressive stress required to transform bulk gold to its higher

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Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS CHEMICAL INHOMOGENEITY–INDUCED PROFUSE NANOTWINNING AND PHASE TRANSFORMATION IN AUCU NANOWIRES Article Open

access 14 September 2023 NANOWIRE MELTING MODES DURING THE SOLID–LIQUID PHASE TRANSITION: THEORY AND MOLECULAR DYNAMICS SIMULATIONS Article Open access 21 November 2022 ATOMISTIC PROCESSES

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Download references ACKNOWLEDGEMENTS The work was supported by Sandia National Laboratories and the National Science Foundation, USA. The authors thank Jon Zimmerman for his insightful

discussions and guidance. AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Mechanical Engineering, University of Colorado, Boulder, 80309, Colorado, USA Jiankuai Diao, Ken Gall 

& Martin L. Dunn Authors * Jiankuai Diao View author publications You can also search for this author inPubMed Google Scholar * Ken Gall View author publications You can also search for

this author inPubMed Google Scholar * Martin L. Dunn View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to Jiankuai

Diao. ETHICS DECLARATIONS COMPETING INTERESTS The authors declare no competing financial interests. SUPPLEMENTARY INFORMATION THE REORIENTED FCC <110> NANOWIRE (PDF 20 KB) RIGHTS AND

PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Diao, J., Gall, K. & Dunn, M. Surface-stress-induced phase transformation in metal nanowires. _Nature Mater_ 2,

656–660 (2003). https://doi.org/10.1038/nmat977 Download citation * Received: 15 May 2003 * Accepted: 12 August 2003 * Published: 07 September 2003 * Issue Date: 01 October 2003 * DOI:

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