Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity
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 n...
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| Format: | Article |
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World Scientific
2007
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| Online Access: | https://eprints.nottingham.ac.uk/906/ |
| _version_ | 1848790499963437056 |
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| author | Hayton, JA Pauliac-Vaujour, E Moriarty, P |
| author_facet | Hayton, JA Pauliac-Vaujour, E Moriarty, P |
| author_sort | Hayton, JA |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T18:13:36Z |
| format | Article |
| id | nottingham-906 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:13:36Z |
| publishDate | 2007 |
| publisher | World Scientific |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-9062020-05-04T20:28:03Z https://eprints.nottingham.ac.uk/906/ Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity Hayton, JA Pauliac-Vaujour, E Moriarty, P 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. World Scientific 2007-12 Article PeerReviewed Hayton, JA, Pauliac-Vaujour, E and Moriarty, P (2007) Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity. Nano, 2 (6). p. 361. nanoparticles; self-assembly; self-organisation; dewetting; silicon; anisotropic; nanorods http://www.worldscinet.com/cgi-bin/details.cgi?id=pii:S1793292007000714&type=html 10.1142/S1793292007000714 10.1142/S1793292007000714 10.1142/S1793292007000714 |
| spellingShingle | nanoparticles; self-assembly; self-organisation; dewetting; silicon; anisotropic; nanorods Hayton, JA Pauliac-Vaujour, E Moriarty, P Anisotropic Assembly of Colloidal Nanoparticles: Exploiting Substrate Crystallinity |
| title | Anisotropic Assembly of Colloidal Nanoparticles:
Exploiting Substrate Crystallinity |
| title_full | Anisotropic Assembly of Colloidal Nanoparticles:
Exploiting Substrate Crystallinity |
| title_fullStr | Anisotropic Assembly of Colloidal Nanoparticles:
Exploiting Substrate Crystallinity |
| title_full_unstemmed | Anisotropic Assembly of Colloidal Nanoparticles:
Exploiting Substrate Crystallinity |
| title_short | Anisotropic Assembly of Colloidal Nanoparticles:
Exploiting Substrate Crystallinity |
| title_sort | anisotropic assembly of colloidal nanoparticles:
exploiting substrate crystallinity |
| topic | nanoparticles; self-assembly; self-organisation; dewetting; silicon; anisotropic; nanorods |
| url | https://eprints.nottingham.ac.uk/906/ https://eprints.nottingham.ac.uk/906/ https://eprints.nottingham.ac.uk/906/ |