Sensing by wireless reading Ag/AgCl redox conversion on RFID tag : universal, battery-less biosensor design

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Sensing by wireless reading Ag/AgCl redox conversion on RFID tag : universal, battery-less biosensor design

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Publication Article, peer reviewed scientific
Title Sensing by wireless reading Ag/AgCl redox conversion on RFID tag : universal, battery-less biosensor design
Author Larpant, Nutcha ; Anh Duc Pham ; Shafaat, Atefeh ; Gonzalez-Martinez, Juan F. ; Sotres, Javier ; Sjoholm, Johan ; Laiwattanapaisal, Wanida ; Faridbod, Farnoush ; Ganjali, Mohammad Reza ; Arnebrant, Thomas ; Ruzgas, Tautgirdas
Research Centre Biofilms - Research Center for Biointerfaces
Date 2019
English abstract
Massive integration of biosensors into design of Internet-of-Things (IoT) is vital for progress of healthcare. However, the integration of biosensors is challenging due to limited availability of battery-less biosensor designs. In this work, a combination of nanomaterials for wireless sensing of biological redox reactions is described. The design exploits silver nanoparticles (AgNPs) as part of the RFID tag antenna. We demonstrate that a redox enzyme, particularly, horseradish peroxidase (HRP), can convert AgNPs into AgCl in the presence of its substrate, hydrogen peroxide. This strongly changes the impedance of the tag. The presented example exploits gold nanoparticle (AuNP)-assisted electron transfer (ET) between AgNPs and HRP. We show that AuNP is a vital intermediate for establishing rapid ET between the enzyme and AgNPs. As an example, battery-less biosensor-RFID tag designs for H2O2 and glucose are demonstrated. Similar battery-less sensors can be constructed to sense redox reactions catalysed by other oxidoreductase enzymes, their combinations, bacteria or other biological and even non-biological catalysts. In this work, a fast and general route for converting a high number of redox reaction based sensors into battery-less sensor-RFID tags is described.
DOI https://doi.org/10.1038/s41598-019-49245-3 (link to publisher's fulltext.)
Link https://doi.org/10.1038/s41598-019-49245-3 .Icon
Publisher Nature Publishing Group
Host/Issue Scientific Reports;
Volume 9
ISSN 2045-2322
Language eng (iso)
Subject Multidisciplinary Sciences
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/30524 Permalink to this page
Link to publication in DiVA Find this research publication in DiVA (n/a for student publ.)
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