Communication

Angle-Dependent Extinction of Anisotropic Silica/Au Core/Shell Colloids Made via Ion Irradiation†

  1. J. J. Penninkhof1,
  2. C. Graf2,5,
  3. T. van Dillen1,4,
  4. A. M. Vredenberg3,
  5. A. van Blaaderen2,
  6. A. Polman1

Article first published online: 7 JUN 2005

DOI: 10.1002/adma.200401742

Issue

Advanced Materials

Advanced Materials

Volume 17, Issue 12, pages 1484–1488, June, 2005

Additional Information

How to Cite

Penninkhof, J. J., Graf, C., van Dillen, T., Vredenberg, A. M., van Blaaderen, A. and Polman, A. (2005), Angle-Dependent Extinction of Anisotropic Silica/Au Core/Shell Colloids Made via Ion Irradiation. Adv. Mater., 17: 1484–1488. doi: 10.1002/adma.200401742

Author Information

  1. 1

    Center for Nanophotonics, FOM Institute AMOLF, Kruislaan 407, NL-1098 SJ Amsterdam, The Netherlands

  2. 2

    Soft Condensed Matter, Debye Institute, Utrecht University, P.O. Box 80000, NL-3508 TA Utrecht, The Netherlands

  3. 3

    Functional Materials, Debye Insitute, Utrecht University, P.O. Box 80000, NL-3508 TA Utrecht, The Netherlands

  4. 4

    Present address: Applied Physics, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands.

  5. 5

    Present address: Institut für Physikalische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.

  1. †

    The authors gratefully acknowledge Prof. Dr. L. W. Jenneskens and Dr. C. A. van Walree (UU) for the use of the CARY 5 spectrophotometer. This work is part of the research program of the “Stichting voor Fundamenteel Onderzoek der Materie (FOM)”, which is financially supported by the “Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO)”. J. J. Penninkhof and C. Graf contributed equally to the work.

Publication History

  1. Issue published online: 7 JUN 2005
  2. Article first published online: 7 JUN 2005
  3. Manuscript Accepted: 17 FEB 2005
  4. Manuscript Received: 22 OCT 2004
Corrected by:

Correction: Angle-Dependent Extinction of Anisotropic Silica/Au Core/Shell Colloids Made via Ion Irradiation

Vol. 18, Issue 21, 2802, Article first published online: 30 OCT 2006

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Keywords:

  • Core–shell particles;
  • Photonic materials
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Spherical colloids with silica cores (300–500 nm diameter) and gold shells (20–60 nm thickness) are shown to deform to form oblate ellipsoids under ion-beam irradiation, as shown in the Figure. The deformation, which can be controlled by ion fluence, is attributed to an ion-induced anisotropic deformation in the amorphous silica that is constrained mechanically by the gold shell. The optical extinction of these samples is highly angle-dependent.

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