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Versatile SERS sensing based on black silicon
Citation
Seniutinas, G and Gervinskas, G and Verma, R and Gupta, BD and Lapierre, F and Stoddart, PR and Clark, F and McArthur, SL and Juodkazis, S, Versatile SERS sensing based on black silicon, Optics Express, 23, (5) pp. 6763-6772. ISSN 1094-4087 (2015) [Refereed Article]
Copyright Statement
Copyright 2015 Optical Society of America
Abstract
Black Si (b-Si) with gold or silver metal coating has been
shown to be an extremely effective substrate for surface-enhanced Raman
scattering (SERS). Here, we demonstrate that it is also a highly versatile
SERS platform, as it supports a wide range of surface functionalizations.
In particular, we report the use of a molecularly imprinted polymer (MIP)
coating and a hydrophobic coating on b-Si to establish two different sensing
modalities. First, using a MIP layer on Au-coated b-Si, we show selective
sensing of two closely related varieties of tetracycline. Second, a hydrophobic
coating was used to concentrate the analyte adsorbed on gold colloidal
nanoparticles, thus increasing the sensitivity of the measurement by an order
of magnitude. In this experiment, Au nanoparticles and analyte were mixed
just before SERS measurements and were concentrated by drop-drying on
the super-hydrophobic b-Si. These approaches are promising for SERS
measurements that are sensitive to the aging of bare plasmonic metal-coated
substrates.
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Engineering |
Research Group: | Materials engineering |
Research Field: | Composite and hybrid materials |
Objective Division: | Manufacturing |
Objective Group: | Instrumentation |
Objective Field: | Scientific instruments |
UTAS Author: | Lapierre, F (Dr Florian Lapierre) |
ID Code: | 100019 |
Year Published: | 2015 |
Web of Science® Times Cited: | 63 |
Deposited By: | Austn Centre for Research in Separation Science |
Deposited On: | 2015-04-23 |
Last Modified: | 2017-12-12 |
Downloads: | 0 |
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