Artículos de revistas
Enhanced Mechanical Stability Of Gold Nanotips Through Carbon Nanocone Encapsulation
Registro en:
Enhanced Mechanical Stability Of Gold Nanotips Through Carbon Nanocone Encapsulation. Nature Publishing Group, v. 5, p. Jun-2015.
2045-2322
WOS:000356518200001
10.1038/srep10408
Autor
Cano-Marquez
Abraham G.; Schmidt
Wesller G.; Ribeiro-Soares
Jenaina; Cancado
Luiz Gustavo; Rodrigues
Wagner N.; Santos
Adelina P.; Furtado
Clascidia A.; Autreto
Pedro A. S.; Paupitz
Ricardo; Galvao
Douglas S.; Jorio
Ado
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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. 5
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) FAPESP [2013/08293-7] FAPESP [2011/17253-3, 2013/09536-0]