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Title: Label-free detection of DNA hybridization with a compact LSPR-based fiber-optic sensor
A miniaturized, robust, localized surface plasmon resonance (LSPR)-coupled fiber-optic (FO) nanoprobe providing an integrated and portable solution for detection of DNA hybridization and measurement of DNA concentrations has been demonstrated. The FO nanoprobe was created by constructing arrays of metallic nanostructures on the end facets of optical fibers utilizing nanofabrication technologies, including electron beam lithography and lift-off processes. The LSPR-FO nanoprobe device offers real-time, label-free, and low-sample-volume quantification of single-strand DNA in water with high sensitivity and selectivity, achieving a limit of detection around 10 fM. These results demonstrate the feasibility of the LSPR-FO nanoprobe device as a compact and low-cost biosensor for detection of short-strand DNA.  more » « less
Award ID(s):
1511194
PAR ID:
10111221
Author(s) / Creator(s):
; ; ; ; ; ; ; ;
Date Published:
Journal Name:
The Analyst
Volume:
142
Issue:
11
ISSN:
0003-2654
Page Range / eLocation ID:
1974 to 1981
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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