Patterning polymeric structures with 2 nm resolution at 3 nm half pitch in ambient conditions.
Nano Lett
; 7(7): 1846-50, 2007 Jul.
Article
de En
| MEDLINE
| ID: mdl-17352509
ABSTRACT
The miniaturization limits of electronic and mechanical devices depend on the minimum pattern periodicity that is stable in ambient conditions. Here we demonstrate an atomic force microscopy lithography that enables the patterning of 2 nm organic structures with 6 nm periodicities in air. We also demonstrate that the lithography can be up-scaled for parallel patterning. The method is based on the formation of a nanoscale octane meniscus between a sharp conductive protrusion and a silicon (100) surface. The application of a high electrical field ( approximately 10 V/nm) produces the polymerization and cross-linking of the octane molecules within the meniscus followed by their deposition. The resulting pattern periodicities are very close to the ultimate theoretical limits achievable in air ( approximately 3 nm). The chemical composition of the patterns has been characterized by photoemission spectroscopy.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Polymères
/
Pression atmosphérique
/
Température
/
Nanotechnologie
Langue:
En
Journal:
Nano Lett
Année:
2007
Type de document:
Article
Pays d'affiliation:
Espagne