Nanoimprinted SERS Sensors for Chemical and Biological Detection

被引：4
|
作者：
Guinevere Strack
Michaela Fitzgerald
Junwei Su
Margery G. H. Pelletier
Peter Gaines
Hongwei Sun
Pradeep Kurup
Ravi Mosurkal
机构：
[1] Materials Science and Engineering Branch,Bio
[2] US Army Natick Soldier RDEC,Science & Technology Team
[3] University of Massachusetts Lowell,Department of Civil & Environmental Engineering
[4] University of Massachusetts Lowell,Department of Mechanical Engineering
[5] University of Massachusetts Lowell,Department of Biological Sciences
来源：
MRS Advances | 2017年 / 2卷 / 19-20期
关键词：
D O I：
10.1557/adv.2017.44
中图分类号：
学科分类号：
摘要：
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.
引用
收藏
页码：1077 / 1082
页数：5
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