Johanna-Gabriela Walter
All-Optical Planar Polymer Waveguide-Based Biosensor Chip Designed for Smartphone-Assisted Detection of Vitamin D
Walter, Johanna-Gabriela; Alwis, Lourdes S. M.; Roth, Bernhard; Bremer, Kort
Authors
Lourdes S. M. Alwis
Bernhard Roth
Kort Bremer
Abstract
An all-optical plasmonic sensor platform designed for smartphones based on planar-optical waveguide structures integrated in a polymer chip is reported for the first time. To demonstrate the applicability of the sensor system for biosensing purposes, the detection of 25-hydroxyvitamin D (25OHD) in human serum samples using an AuNP-enhanced aptamer-based assay was demonstrated. With the aid of the developed assay sensitivity of 0.752 pixel/nM was achieved for 25OHD concentrations ranging from 0–100 nM. The waveguide structure of the sensor enables miniaturisation and parallelisation, thus, demonstrates the potential for simultaneous detection of various analytes including biomarkers. The entire optical arrangement can be integrated into a single polymer chip which allows for large scale and cost-efficient sensor fabrication. The broad utilization and access of smartphone electronics make the proposed design most attractive for its wider use in lab-on-chip applications.
Citation
Walter, J., Alwis, L. S. M., Roth, B., & Bremer, K. (2020). All-Optical Planar Polymer Waveguide-Based Biosensor Chip Designed for Smartphone-Assisted Detection of Vitamin D. Sensors, 20(23), Article 6771. https://doi.org/10.3390/s20236771
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 24, 2020 |
Online Publication Date | Nov 27, 2020 |
Publication Date | 2020-12 |
Deposit Date | Dec 4, 2020 |
Publicly Available Date | Dec 4, 2020 |
Journal | Sensors |
Publisher | MDPI |
Peer Reviewed | Peer Reviewed |
Volume | 20 |
Issue | 23 |
Article Number | 6771 |
DOI | https://doi.org/10.3390/s20236771 |
Keywords | surface plasmon resonance; biosensor; aptamers; vitamin D; optical waveguide; integrated optics |
Public URL | http://researchrepository.napier.ac.uk/Output/2708236 |
Publisher URL | https://www.mdpi.com/1424-8220/20/23/6771/htm |
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All-Optical Planar Polymer Waveguide-Based Biosensor Chip Designed For Smartphone-Assisted Detection Of Vitamin D
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http://creativecommons.org/licenses/by/4.0/
Copyright Statement
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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