Enhanced Light Focusing in Self‐Assembled Optoplasmonic Clusters with Subwavelength Dimensions. (11th October 2012)

• Record Type: Journal Article
• Authors: Hong, Yan; Pourmand, Mahshid; Boriskina, Svetlana V.; Reinhard, Björn M.
• Is Part Of: Advanced materials. Volume 25:Number 1(2013)
• Page Start: 115
• Page End: 119
• Publication Date: 2012-10-11
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201202830
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Compact metallo‐dielectric hybrid clusters with subwavelength dimensions</bold> are fabricated by template guided self‐assembly. Elastic and inelastic scattering spectroscopy and electromagnetic simulations reveal that hybrid clusters comprising TiO₂ nanoparticles on top of a cluster of strongly coupled gold nanoparticles harness synergistic electromagnetic interactions between the building blocks. This results in a boost of the peak electric field intensity and a redistribution of the field in the ambient medium. The complex phase landscape in the clusters features optical vortices that enhance the magnetic field. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1p8tg8nc" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>