Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242340
Type: Artigo
Title: Enhanced mechanical stability of gold nanotips through carbon nanocone encapsulation
Author: Cano-Marquez, Abraham G.
Schmidt, Wesller G.
Ribeiro-Soares, Jenaina
Cançado, Luiz Gustavo
Rodrigues, Wagner N.
Santos, Adelina P.
Furtado, Clascidia A.
Autreto, Pedro A. S.
Paupitz, Ricardo
Galvão, Douglas S.
Jorio, Ado
Abstract: Gold is a noble metal that, in comparison with silver and copper, has the advantage of corrosion resistance. Despite its high conductivity, chemical stability and biocompatibility, gold exhibits high plasticity, which limits its applications in some nanodevices. Here, we report an experimental and theoretical study on how to attain enhanced mechanical stability of gold nanotips. The gold tips were fabricated by chemical etching and further encapsulated with carbon nanocones via nanomanipulation. Atomic force microscopy experiments were carried out to test their mechanical stability. Molecular dynamics simulations show that the encapsulated nanocone changes the strain release mechanisms at the nanoscale by blocking gold atomic sliding, redistributing the strain along the whole nanostructure. The carbon nanocones are conducting and can induce magnetism, thus opening new avenues on the exploitation of transport, mechanical and magnetic properties of gold covered by sp(2) carbon at the nanoscale.
Gold is a noble metal that, in comparison with silver and copper, has the advantage of corrosion resistance. Despite its high conductivity, chemical stability and biocompatibility, gold exhibits high plasticity, which limits its applications in some nanodevices. Here, we report an experimental and theoretical study on how to attain enhanced mechanical stability of gold nanotips. The gold tips were fabricated by chemical etching and further encapsulated with carbon nanocones via nanomanipulation. Atomic force microscopy experiments were carried out to test their mechanical stability. Molecular dynamics simulations show that the encapsulated nanocone changes the strain release mechanisms at the nanoscale by blocking gold atomic sliding, redistributing the strain along the whole nanostructure. The carbon nanocones are conducting and can induce magnetism, thus opening new avenues on the exploitation of transport, mechanical and magnetic properties of gold covered by sp(2) carbon at the nanoscale.
Subject: Nanocones
Carbono
Nanossensores
Country: Reino Unido
Editor: Nature Publishing Group
Citation: Enhanced Mechanical Stability Of Gold Nanotips Through Carbon Nanocone Encapsulation. Nature Publishing Group, v. 5, p. Jun-2015.
Rights: aberto
Identifier DOI: 10.1038/srep10408
Address: https://www.nature.com/articles/srep10408
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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