Aligned Gold Nanorods in Silica Made by Ion Irradiation of Core-Shell Colloidal Particles

Colloidal particles with a 14 nm diameter Au core surrounded by a 72 nm thick silica shell have been irradiated with 30 MeV heavy ions. The shell deforms into an oblate ellipsoid, while the core becomes rod‐shaped (aspect ratio up to 9) with the major axis along the beam. Optical extinction measurem...

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Bibliographic Details
Published in:	Advanced materials (Weinheim) Vol. 16; no. 3; pp. 235 - 237
Main Authors:	Roorda, S., van Dillen, T., Polman, A., Graf, C., van Blaaderen, A., Kooi, B. J.
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 03-02-2004 WILEY‐VCH Verlag
Subjects:	Colloidal particles Core-shell particles Gold Ion irradiation Nanorods Silica
Online Access:	Get full text
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Summary:	Colloidal particles with a 14 nm diameter Au core surrounded by a 72 nm thick silica shell have been irradiated with 30 MeV heavy ions. The shell deforms into an oblate ellipsoid, while the core becomes rod‐shaped (aspect ratio up to 9) with the major axis along the beam. Optical extinction measurements show evidence for split plasmon bands, characteristic for anisotropic metal nanoparticles.
Bibliography:	ark:/67375/WNG-6XJCX8M0-9 istex:133BAF429C97E8ECE5F43A1F4363E1D368EA19E0 This work is part of the research program of FOM and was financially supported by NWO, EC, NSERC, and FCAR. Research Center Rossendorf is gratefully acknowledged for part of the ion irradiations. ArticleID:ADMA200305742 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0935-9648 1521-4095
DOI:	10.1002/adma.200305742