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
1944-8252
Volume Title
6
Publisher
American Chemical Society (ACS)
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)
We acknowledge financial support from EPSRC grant EP/G060649/1, EP/I012060/1, EP/J007552/1, ERC grant LINASS 320503.