Enhanced Mechanical Stability of Gold Nanotips through Carbon Nanocone Encapsulation.

Cano-Marquez, Abraham G; Schmidt, Wesller G; Ribeiro-Soares, Jenaina; Gustavo Cançado, Luiz; Rodrigues, Wagner N; Santos, Adelina P; Furtado, Clascidia A; Autreto, Pedro A S; Paupitz, Ricardo; Galvão, Douglas S; Jorio, Ado

Cano-Marquez, Abraham G; Schmidt, Wesller G; Ribeiro-Soares, Jenaina; Gustavo Cançado, Luiz; Rodrigues, Wagner N; Santos, Adelina P; Furtado, Clascidia A; Autreto, Pedro A S; Paupitz, Ricardo; Galvão, Douglas S; Jorio, Ado.

Afiliação

Cano-Marquez AG; Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Schmidt WG; Materials Research Institute, N-261 Millennium Science Complex, Penn State University, University Park, PA 16802, USA.
Ribeiro-Soares J; Centro de Microscopia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30123-970, Brazil.
Gustavo Cançado L; Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Rodrigues WN; Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Santos AP; Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Furtado CA; Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, MG, 31270-010, Brazil.
Autreto PAS; Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, MG, 31270-010, Brazil.
Paupitz R; Instituto de Física 'Gleb Wataghin', Universidade Estadual de Campinas, Campinas, SP, 13083-970, Brazil.
Galvão DS; Departamento de Física, IGCE, Universidade Estadual Paulista - UNESP, Rio Claro, SP, 13506-900, Brazil.
Jorio A; Instituto de Física 'Gleb Wataghin', Universidade Estadual de Campinas, Campinas, SP, 13083-970, Brazil.

Sci Rep ; 5: 10408, 2015 Jun 17.

Article em En | MEDLINE | ID: mdl-26083864

RESUMO

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.

Texto completo

Adicionar na Minha BVS

Imprimir

XML

PubMed Links

Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo

Adicionar na Minha BVS

Imprimir

XML

PubMed Links

Buscar no Google