Self-aligned colloidal lithography for controllable and tuneable plasmonic nanogaps.
Change log
Authors
Ding, Tao
Herrmann, Lars O
de Nijs, Bart
Benz, Felix
Baumberg, Jeremy J
Abstract
Au nanoparticles (NPs) deposited on a substrate function as ring shaped colloidal shadow masks. Using e-beam evaporation of gold, nanometer sized gaps are formed as a result. The size of these gaps can be accurately tuned by controlling the thickness of the gold deposition, thereby tuning the plasmonic coupling of the NPs with the substrate. The clean cavity produced between the Au NPs and the Au film provides an excellent SERS platform for trace molecule detection.
Description
Keywords
SERS, colloidal lithography, ebeam evaporation, gold films, nanoparticles
Journal Title
Small
Conference Name
Journal ISSN
1613-6810
1613-6829
1613-6829
Volume Title
11
Publisher
Wiley
Publisher DOI
Sponsorship
Engineering and Physical Sciences Research Council (EP/G060649/1)
Engineering and Physical Sciences Research Council (EP/K028510/1)
Engineering and Physical Sciences Research Council (EP/L027151/1)
European Research Council (320503)
Engineering and Physical Sciences Research Council (EP/K028510/1)
Engineering and Physical Sciences Research Council (EP/L027151/1)
European Research Council (320503)
The authors acknowledge the fi nancial support of this research from EPSRC grant EP/G060649/1, EP/I012060/1, and ERC grant LINASS 320503. FB acknowledges support from the Winton Pro-gramme for the Physics of Sustainability.