Enhanced Mechanical Stability of Gold Nanotips through Carbon Nanocone Encapsulation


Autoria(s): 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
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

21/10/2015

21/10/2015

17/06/2015

Resumo

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)

Processo FAPESP: 2013/08293-7

Processo FAPESP: 2011/17253-3

Processo FAPESP: 2013/09536-0

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.

Formato

5

Identificador

http://www.nature.com/articles/srep10408

Scientific Reports. London: Nature Publishing Group, v. 5, 5 p., 2015.

2045-2322

http://hdl.handle.net/11449/129038

http://dx.doi.org/10.1038/srep10408

WOS:000356518200001

WOS000356518200001.pdf

Idioma(s)

eng

Publicador

Nature Publishing Group

Relação

Scientific Reports

Direitos

openAccess

Tipo

info:eu-repo/semantics/article