1D nanofabrication with a micrometer-sized laser spot.
A simple laser-assisted procedure for the fabrication of functional organic nanostructures is demonstrated. Native silicon samples are coated with alkylsiloxane monolayers and patterned with a focused beam of an Ar(+) laser (lambda = 514 nm). After patterning, the coating is chemically functionalized following a robust preparation scheme. Despite a laser spot diameter of about 2.5 mum, this routine allows for the fabrication of well-confined organosiloxane stripes with widths below 100 nm. As shown, these structures provide a versatile means for building ordered surface architectures of nanoscopic components. In particular, gold nanoparticles (d = 16 nm) self-assemble into one-dimensional arrangements, such as single chains.
Dahlhaus
Daniel
D
Fachbereich Chemie, Universität Duisburg-Essen, Universitätsstr. 5, 45141 Essen, Germany.
Franzka
Steffen
S
Hasselbrink
Eckart
E
Hartmann
Nils
N
D003460:Crystallization / Q000379:methods*; D007834:Lasers; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D012825:Silicon / Q000737:chemistry* / Q000528:radiation effects; D012833:Siloxanes / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties
D012833:Siloxanes; D012825:Silicon