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Nanoimprinted SERS Sensors for Chemical and Biological Detection

Published online by Cambridge University Press:  16 January 2017

Guinevere Strack ,
Michaela Fitzgerald ,
Junwei Su ,
Margery G. H. Pelletier ,
Peter Gaines ,
Hongwei Sun ,
Pradeep Kurup  and
Ravi Mosurkal
Guinevere Strack
Affiliation:
Bio-Science & Technology Team, Materials Science and Engineering Branch, US Army Natick Soldier RDEC, Natick, MA 01760, U.S.A. Department of Civil & Environmental Engineering, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Michaela Fitzgerald
Affiliation:
Bio-Science & Technology Team, Materials Science and Engineering Branch, US Army Natick Soldier RDEC, Natick, MA 01760, U.S.A. Department of Civil & Environmental Engineering, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Junwei Su
Affiliation:
Department of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Margery G. H. Pelletier
Affiliation:
Department of Biological Sciences, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Peter Gaines
Affiliation:
Department of Biological Sciences, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Hongwei Sun
Affiliation:
Department of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Pradeep Kurup*
Affiliation:
Department of Civil & Environmental Engineering, University of Massachusetts Lowell, Lowell, MA 01854, U.S.A.
Ravi Mosurkal*
Affiliation:
Bio-Science & Technology Team, Materials Science and Engineering Branch, US Army Natick Soldier RDEC, Natick, MA 01760, U.S.A.
*
*Corresponding authors: [email protected]; [email protected]
*Corresponding authors: [email protected]; [email protected]
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Abstract

Herein, we demonstrate a facile, rapid, and scalable method to fabricate polymer-based gratings for surface-enhanced Raman spectroscopy (SERS) sensors. To accomplish this, epoxy nanostripe arrays on silicon substrates were prepared using thermal annealing and UV-cross-linking. After preparation of the nanostripe arrays, the surface was briefly treated with oxygen plasma, which decreased the surface energy and enabled the growth of AgNPs on the polymer surface using a simple, low-cost, aqueous-based synthesis procedure. The SERS substrates exhibited a detection limit of ∼1 pM using rhodamine 6G (R6G). In addition, preliminary work with E. coli DH5 showed that the nanoimprinted substrates can be used to obtain Raman spectra of washed bacteria cells.

Keywords

Raman spectroscopybiologicalsensor
Type
Articles
Information
MRS Advances , Volume 2 , Issue 19-20: Biomaterials and Soft Materials , 2017 , pp. 1077 - 1082
Copyright
Copyright © Materials Research Society 2017 

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References

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