Abstract
Paper has been used as substrate to perform analytical tests for centuries however, since 2007 microfluidically patterned paper substrates opened up a large new area of sensing applications that have previously exclusively been available to microfluidic devices made from glass or synthetic polymeric materials. Based on the paper characteristics (liquid through capillary action, the capability of modification and reagents storage inside the fiber network, availability and large-scale production), this material is suitable for analytical devices fabrication. The microfluidic paper-based analytical device (µPADs) enabled to develop low cost, disposable and ecofriendly devices, that allows to perform analysis in developing countries, low-resource areas and point-of-care where lacking infrastructure and trained professionals. However, since colorimetric methods have been used preferentially for detection, the range of application of these devices it is not wide as it could be. Real samples have complex composition, hence the presence of species with similar chemical characteristics can hinder or even become impossible to qualify or quantify the analyte without of more selectivity and sensitivity analytical methods. In this sense, electrochemical detection provides a quantitative and alternative detection system for ¼PADs and can improve the performance of ¼PADs in terms of sensitivity and selectivity. Paper-based electrochemical devices (ePADs) were first published in 2009 and since then different fabrication methods have been reported using chemical reagent deposition and chemical atmosphere control for the manufacture of ePADs . In this project, we will try to fabricate ePADs devices without the need of chemical reagents using a laser to perform the paper pyrolysis creating devices without the need of chemical reagents and with low cost. In addition, alternative methods with the deposition of nanomaterials and metallic low cost materials are also reported for the development of electrochemical sensors in the forensic, clinical and environmental area. (AU)
Scientific publications
(19)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ATAIDE, VANESSA N.;
AMEKU, WILSON A.;
BACIL, RAPHAEL R.;
ANGNES, LUCIO;
DE ARAUJO, WILLIAM R.;
PAIXAO, THIAGO R. L. C.
Enhanced performance of pencil-drawn paper-based electrodes by laser-scribing treatment.
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JAN 13 2021.
Web of Science Citations: 0.
AMEKU, WILSON A.;
GONCALVES, JOSUE M.;
ATAIDE, VANESSA N.;
SANTOS, MAURO S. FERREIRA;
GUTZ, IVANO G. R.;
ARAKI, KOITI;
PAIXAO, THIAGO R. L. C.
Combined Colorimetric and Electrochemical Measurement Paper-Based Device for Chemometric Proof-of-Concept Analysis of Cocaine Samples.
ACS OMEGA,
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JAN 12 2021.
Web of Science Citations: 0.
TASIC, NIKOLA;
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MARTIN-YERGA, DANIEL;
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PAIXAO, THIAGO R. L. C.;
GONCALVES, LUIS MOREIRA.
Insights into electrochemical behavior in laser-scribed electrochemical paper-based analytical devices.
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DIAS, ANDERSON A.;
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LOBO-JUNIOR, EULICIO O.;
SGOBBI, LIVIA F.;
DE ARAUJO, WILLIAM R.;
PAIXAO, THIAGO R. L. C.;
COLTRO, WENDELL K. T.
Environmentally Friendly Manufacturing of Flexible Graphite Electrodes for a Wearable Device Monitoring Zinc in Sweat.
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OCT 30 2019.
Web of Science Citations: 0.
CARDOSO, RAFAEL M.;
CASTRO, SILVIA V. F.;
SILVA, MURILO N. T.;
LIMA, ANA P.;
SANTANA, MARIO H. P.;
NOSSOL, EDSON;
SILVA, RODRIGO A. B.;
RICHTER, EDUARDO M.;
PAIXAO, THIAGO R. L. C.;
MUNOZ, RODRIGO A. A.
3D-printed flexible device combining sampling and detection of explosives.
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p. 308-313,
AUG 1 2019.
Web of Science Citations: 6.
DE CASTRO, LUCAS F.;
DE FREITAS, SORAIA V.;
DUARTE, LUCAS C.;
DE SOUZA, JOAO ANTONIO C.;
PAIXAO, THIAGO R. L. C.;
COLTRO, WENDELL K. T.
Salivary diagnostics on paper microfluidic devices and their use as wearable sensors for glucose monitoring.
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n. 19, SI,
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JUL 2019.
Web of Science Citations: 4.
MENDES, LETICIA FRANCINE;
SOUZA E SILVA, ANGELA RODRIGUES;
BACIL, RAPHAEL PRATA;
PIRES SERRANO, SILVIA HELENA;
ANGNES, LUCIO;
LONGO CESAR PAIXAO, THIAGO REGIS;
DE ARAUJO, WILLIAM REIS.
Forensic electrochemistry: Electrochemical study and quantification of xylazine in pharmaceutical and urine samples.
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p. 726-734,
FEB 1 2019.
Web of Science Citations: 1.
DE ARAUJO, WILLIAM R.;
CARDOSO, THIAGO M. G.;
DA ROCHA, RAQUEL G.;
SANTANA, MARIO H. P.;
MUNOZ, RODRIGO A. A.;
RICHTER, EDUARDO M.;
PAIXAO, THIAGO R. L. C.;
COLTRO, WENDELL K. T.
Portable analytical platforms for forensic chemistry: A review.
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NOV 30 2018.
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DE ARAUJO, WILLIAM R.;
FRASSON, CAROLINA M. R.;
AMEKU, WILSON A.;
SILVA, JOSE R.;
ANGNES, LUCIO;
PAIXAO, THIAGO R. L. C.
Single-Step Reagentless Laser Scribing Fabrication of Electrochemical Paper-Based Analytical Devices.
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v. 56,
n. 47,
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NOV 20 2017.
Web of Science Citations: 25.