File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1063/1.2991301
- Scopus: eid_2-s2.0-54049123279
- WOS: WOS:000260125500138
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Asperity contacts at the nanoscale: Comparison of Ru and Au
Title | Asperity contacts at the nanoscale: Comparison of Ru and Au |
---|---|
Authors | |
Issue Date | 2008 |
Citation | Journal of Applied Physics, 2008, v. 104, n. 7, article no. 074320 How to Cite? |
Abstract | We develop and validate an interatomic potential for ruthenium based on the embedded atom method framework with the Finnis/Sinclair representation. We confirm that the potential yields a stable hcp lattice with reasonable lattice and elastic constants and surface and stacking fault energies. We employ molecular dynamics simulations to bring two surfaces together, one flat and the other with a single asperity. We compare the process of asperity contact formation and breaking in Au and Ru, two materials currently in use in microelectromechanical system switches. While Au is very ductile at 150 and 300 K, Ru shows considerably less plasticity at 300 and 600 K (approximately the same homologous temperature). In Au, the asperity necks down to a single atom thick bridge at separation. While similar necking occurs in Ru at 600 K, it is much more limited than in Au. On the other hand, at 300 K, Ru breaks by a much more brittle process of fracture/decohesion with limited plastic deformation. © 2008 American Institute of Physics. |
Persistent Identifier | http://hdl.handle.net/10722/303335 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.649 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fortini, Andrea | - |
dc.contributor.author | Mendelev, Mikhail I. | - |
dc.contributor.author | Buldyrev, Sergey | - |
dc.contributor.author | Srolovitz, David | - |
dc.date.accessioned | 2021-09-15T08:25:06Z | - |
dc.date.available | 2021-09-15T08:25:06Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Journal of Applied Physics, 2008, v. 104, n. 7, article no. 074320 | - |
dc.identifier.issn | 0021-8979 | - |
dc.identifier.uri | http://hdl.handle.net/10722/303335 | - |
dc.description.abstract | We develop and validate an interatomic potential for ruthenium based on the embedded atom method framework with the Finnis/Sinclair representation. We confirm that the potential yields a stable hcp lattice with reasonable lattice and elastic constants and surface and stacking fault energies. We employ molecular dynamics simulations to bring two surfaces together, one flat and the other with a single asperity. We compare the process of asperity contact formation and breaking in Au and Ru, two materials currently in use in microelectromechanical system switches. While Au is very ductile at 150 and 300 K, Ru shows considerably less plasticity at 300 and 600 K (approximately the same homologous temperature). In Au, the asperity necks down to a single atom thick bridge at separation. While similar necking occurs in Ru at 600 K, it is much more limited than in Au. On the other hand, at 300 K, Ru breaks by a much more brittle process of fracture/decohesion with limited plastic deformation. © 2008 American Institute of Physics. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Applied Physics | - |
dc.title | Asperity contacts at the nanoscale: Comparison of Ru and Au | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1063/1.2991301 | - |
dc.identifier.scopus | eid_2-s2.0-54049123279 | - |
dc.identifier.volume | 104 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | article no. 074320 | - |
dc.identifier.epage | article no. 074320 | - |
dc.identifier.isi | WOS:000260125500138 | - |