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Nanoimprint lithography of Al nanovoids for deep-UV SERS.


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Authors

Ding, Tao 
Sigle, Daniel O 
Herrmann, Lars O 
Wolverson, Daniel 
Baumberg, Jeremy J 

Abstract

Deep-ultraviolet surface-enhanced Raman scattering (UV-SERS) is a promising technique for bioimaging and detection because many biological molecules possess UV absorption lines leading to strongly resonant Raman scattering. Here, Al nanovoid substrates are developed by combining nanoimprint lithography of etched polymer/silica opal films with electron beam evaporation, to give a high-performance sensing platform for UV-SERS. Enhancement by more than 3 orders of magnitude in the UV-SERS performance was obtained from the DNA base adenine, matching well the UV plasmonic optical signatures and simulations, demonstrating its suitability for biodetection.

Description

Keywords

adenine, nanobowls, polymer opals, resonant Raman, stamps

Journal Title

ACS Appl Mater Interfaces

Conference Name

Journal ISSN

1944-8244
1944-8252

Volume Title

6

Publisher

American Chemical Society (ACS)
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)
We acknowledge financial support from EPSRC grant EP/G060649/1, EP/I012060/1, EP/J007552/1, ERC grant LINASS 320503.