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2021 (English)In: Advanced Healthcare Materials, ISSN 2192-2640, E-ISSN 2192-2659, Vol. 10, no 11, p. 2100034-Article in journal (Refereed) [Artistic work] Published
Abstract [en]
Fiber-based biosensors enable a new approach in analytical diagnosticdevices. The majority of textile-based biosensors, however, rely oncolorimetric detection. Here a woven biosensor that integrates microfluidicsstructures in combination with an electroanalytical readout based on athiol-self-assembled monolayer (SAM) for Nucleic Acid Amplification Testing,NAATs is shown. Two types of fiber-based electrodes are systematicallycharacterized: pure gold microwires (bond wire) and off-the-shelf plasmagold-coated polyester multifilament threads to evaluate their potential to formSAMs on their surface and their electrochemical performance in woven textile.A woven electrochemical DNA (E-DNA) sensor using a SAM-based stem-loopprobe-modified gold microwire is fabricated. These sensors can specificallydetect unpurified, isothermally amplified genomic DNA of Staphylococcusepidermidis (10 copies/μL) by recombinase polymerase amplification (RPA).This work demonstrates that textile-based biosensors have the potential forintegrating and being employed as automated, sample-to-answer analyticaldevices for point-of-care (POC) diagnostics.
Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2021
Keywords
Woven electroanalytical microfluidic devices, DNA biosensors, Fiber electrodes, Self assembled monolayers (SAM)
National Category
Analytical Chemistry
Identifiers
urn:nbn:se:kth:diva-301909 (URN)10.1002/adhm.202100034 (DOI)000645682300001 ()33930257 (PubMedID)2-s2.0-85105138834 (Scopus ID)
Funder
EU, European Research Council
Note
QC 20210917
2021-09-142021-09-142022-12-07Bibliographically approved