An angled nano-tunnel fabricated on poly(methyl methacrylate) by a focused ion beam.
Nanotechnology
; 20(28): 285301, 2009 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-19546496
ABSTRACT
Angled nano-scale tunnels with high aspect ratio were fabricated on poly(methyl methacrylate) (PMMA) using a focused ion beam (FIB). The fabrication parameters such as ion fluence, incidence angle, and acceleration voltage of the Ga(+) ion beam were first studied on the PMMA surface to explore the formation of the nano-scale configurations such as nano-holes and cones with diameter in the range of 50-150 nm at an ion beam acceleration voltage of 5-20 kV. It was also found that the PMMA surface exposed to FIB was changed into an amorphous graphitic structure. Angled nano-scale tunnels were fabricated with high aspect ratio of 700-1500 nm in depth and 60 nm in mean diameter at an ion beam acceleration voltage of 5 kV and under a specific ion beam current. The angle of the nano-tunnels was found to follow the incident angle of the ion beam tilted from 0 degrees to 85 degrees , which has the potential for creating a mold for anisotropic adhesives by mimicking the hairs on a gecko's feet.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Polimetil Metacrilato
/
Nanotecnologia
/
Nanoestruturas
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article