Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/189429

Title

3D-tailored gold nanoparticles for light field enhancement and harvesting over visible-IR spectral range

Author(s)

Rosa, Lorenzo;  Sun, Kai;  Mizeikis, Vygantas;  Bauerdick, Sven;  Peto, Lloyd;  Juodkazis, Saulius

Abstract

A method for practical area upscaling of nanopatterning for light-harvesting and photocatalytic applications is presented. Large area electron beam lithography is used to design patterns of simple-shape nanoparticles. After evaporation of gold, ion beam lithography is used to slice nanoparticles with grooves as narrow as 17 ± 3 nm in width for the required spectral performance and light field enhancement. It is demonstrated by systematic numerical simulations that cutting grooves into the Si and SiO2 substrates up to a 10 nm depth augments the volume where the light-field enhancement occurs. The dominant component of the field enhancement in the groove is |Ez|2, perpendicular to the substrate's surface. The application potential of 3D-tailored nanoparticles in light harvesting applications is discussed.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Journal of Physical Chemistry C, Vol. 115, no. 13 (Apr 2011), pp. 5251-5256

Publication year

2011

FOR Code(s)

0303 Macromolecular and Materials Chemistry;  0306 Physical Chemistry (Incl. Structural);  0904 Chemical Engineering

Keyword(s)

Localized surface-plasmon;  Nanogaps;  Photopolymerization

Publisher

American Chemical Society

ISSN

1932-7447

Publisher URL

http://dx.doi.org/10.1021/jp109099m

Copyright

Copyright © 2011 American Chemical Society.

Research Projects

Ultrafast photonic hammer: a new strategy to synthesise super dense super hard nanomaterials, Australian Research Council grant number DP0988054

Peer reviewed