Nasr Esfahani, M. orcid.org/0000-0002-6973-2205 and Jabbari, M. orcid.org/0000-0001-8781-4784 (Cover date: May 1, 2020,) Molecular Dynamics Simulations of Deformation Mechanisms in the Mechanical Response of Nanoporous Gold. Materials, 13 (9). 2071. ISSN 1996-1944
Abstract
The mechanical behaviour of nanoporous gold has so far been the subject of studies for bicontinuous morphologies, while the load transfer between ligaments is the primary challenge for using nanoporous structures—especially membranes with nanopores—in single-molecule sensors. This work studies the pore shape effect on deformation mechanisms of nanoporous gold membranes through molecular dynamics simulations. Tension and compression tests are carried out for nanoporous gold with circular, elliptical, square and hexagonal pore shapes. A significant pore shape effect on the mechanical properties is observed with distinct load transfer capabilities. A uniform stress transfer between ligaments constitutes a distinguished set of mechanical responses for structures with the hexagonal pore shape under tension, while a unique stress distribution in nanoporous with the circular pore shape introduces a high strength and ductile structure under compression. Further to shed light on the existing experimental observations, this work provides a comprehensive study on load transfer capabilities in the mechanical behaviour of nanoporous gold for sensing applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | nanopore gold; mechanical properties; pore shape; stress; molecular dynamics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Aug 2023 15:30 |
Last Modified: | 22 Aug 2023 15:30 |
Published Version: | https://www.mdpi.com/1996-1944/13/9/2071 |
Status: | Published |
Publisher: | MDPI |
Identification Number: | 10.3390/ma13092071 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:202539 |