Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity
Data(s) |
01/12/2007
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Resumo |
We show that the crystal structure of a substrate can be exploited to drive the anisotropic assembly of colloidal nanoparticles. Pentanethiol-passivated Au particles of approximately 2 nm diameter deposited from toluene onto hydrogen-passivated Si(111) surfaces form linear assemblies (rods) with a narrow width distribution. The rod orientations mirror the substrate symmetry, with a high degree of alignment along principal crystallographic axes of the Si(111) surface. There is a strong preference for anisotropic growth with rod widths substantially more tightly distributed than lengths. Entropic trapping of nanoparticles provides a plausible explanation for the formation of the anisotropic assemblies we observe. |
Formato |
application/pdf |
Identificador |
http://eprints.nottingham.ac.uk/906/1/NANO2361.pdf Hayton, JA and Pauliac-Vaujour, E and Moriarty, P (2007) Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity. Nano, 2 (6). p. 361. |
Idioma(s) |
en |
Publicador |
World Scientific |
Relação |
http://eprints.nottingham.ac.uk/906/ http://www.worldscinet.com/cgi-bin/details.cgi?id=pii:S1793292007000714&type=html 10.1142/S1793292007000714 |
Tipo |
Article PeerReviewed |