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Miniaturized and integrated chemical sensors: new fabrication platforms for biological, clinical and environmental applications

Grant number: 18/08782-1
Support type:Research Projects - Thematic Grants
Duration: December 01, 2018 - November 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Mauro Bertotti
Grantee:Mauro Bertotti
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Co-Principal Investigators:Marcelo Nelson Páez Carreño ; Thiago Regis Longo Cesar da Paixão
Assoc. researchers:Gustavo Pamplona Rehder ; Ines Pereyra ; Marco Isaías Alayo Chávez ; William Reis de Araujo
Associated grant(s):19/16491-0 - Rapid, onsite detection of toxic metals combining paper-based electrochemical sensors and fast-scan cyclic voltammetry, AP.R SPRINT
19/10606-0 - Multi-User Equipment approved in grant 2018/08782-1: photolithography system, AP.EMU
19/00811-5 - EMU granted in process 2018/08782-1: materials deposition system by ink-jet, AP.EMU
Associated scholarship(s):20/01612-3 - Study on Ca2+ diffusion through caffeine-containing xantana membranes using a potentiometric microsensor, BP.IC
19/23206-0 - Fabrication on an electrochemical sensor for no detection, BP.IC
19/15065-7 - Development of paper-based electrochemical systems aiming flow analysis of forensic samples, BP.DD
+ associated scholarships 19/14418-3 - Electrochemical sensors for water quality monitoring, BP.DD
19/06293-6 - Investigations in biological systems by using miniaturized electrochemical sensors, BP.PD
19/00889-4 - Electrochemical determination of iodate in urine samples by redox cycling with microelectrodes, BP.MS - associated scholarships


Analytical chemistry techniques and technologies have rapidly emerged in the last years, but the cost and logistics for the samples collection at meaningful spatial scales and further analysis does not make their development and spread straightforward. Such problems can be better addressed by the fabrication of devices that operate autonomously at or near the sampling site, reducing the risks of error and contamination associated with manual sample acquisition, storage, and transport. This direct-reading chemical sensor operates by detecting and responding in a fast way to the presence or amount of an analyte at some interface between the sensor and the sample matrix. Those systems are capable of handling volumes on the microliter level and performing assays at short times, hence the miniaturization offers a suitable platform for portability and automation. Based on selected parameters, devices can be fabricated for analog signal gathering, processing, logging and remote presentation of data. Taking into account the above-mentioned, this research project aims at designing and developing integrated systems for real time monitoring of some target compounds at sites of environmental, health and biological relevance. The proposed devices will consist of several miniaturized electrochemical and optical sensors and emphasis will be given on apparatuses that can be easily implemented and possess reliable and long-time operation, as well as with wearable application. To achieve high selectivity toward the desired analytes, new platforms will be designed by using novel materials. In the absence of favorable selectivity, different strategies will be employed such as mathematical approaches (chemometric analysis) or the separation of the analyte from the sample matrix by using microfluidic devices. The developed sensors will have to satisfy analytical requirements (e.g. reduced drift response, resistance to surface fouling and high selectivity, accuracy and precision) as well as technological demands (mass-scale production at low cost, low power requirements and robust electronics). (AU)

Scientific publications (18)
(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)
CLARK, KAYLEE M.; SKRAJEWSKI, LAUREN; BENAVIDEZ, TOMAS E.; MENDES, LETICIA F.; BASTOS, ERICK L.; DORR, FELIPE A.; SACHDEVA, RAKESH; OGALE, AMOD A.; PAIXAO, THIAGO R. L. C.; GARCIA, CARLOS D. Fluorescent patterning of paper through laser engraving. SOFT MATTER, v. 16, n. 33, p. 7659-7666, SEP 7 2020. Web of Science Citations: 0.
REGIART, MATIAS; GIMENEZ, ALBA MARINA; LOPES, ALEXANDRE T.; CARRENO, MARCELO N. P.; BERTOTTI, MAURO. Ultrasensitive microfluidic electrochemical immunosensor based on electrodeposited nanoporous gold for SOX-2 determination. Analytica Chimica Acta, v. 1127, p. 122-130, AUG 29 2020. Web of Science Citations: 0.
MENDES, LETICIA FRANCINE; DE SIERVO, ABNER; DE ARAUJO, WILLIAM REIS; LONGO CESAR PAIXAO, THIAGO REGIS. Reagentless fabrication of a porous graphene-like electrochemical device from phenolic paper using laser-scribing. Carbon, v. 159, p. 110-118, APR 15 2020. Web of Science Citations: 0.
FERREIRA E SILVA, RAFAEL; LONGO CESAR PAIXAO, THIAGO REGIS; TOROSSIAN TORRES, MARCELO DER; DE ARAUJO, WILLIAM REIS. Simple and inexpensive electrochemical paper-based analytical device for sensitive detection of Pseudomonas aeruginosa. SENSORS AND ACTUATORS B-CHEMICAL, v. 308, APR 1 2020. Web of Science Citations: 0.
ATAIDE, VANESSA N.; MENDES, LETICIA F.; GAMA, LILLIA I. L. M.; DE ARAUJO, WILLIAM R.; PAIXAO, THIAGO R. L. C. Electrochemical paper-based analytical devices: ten years of development. ANALYTICAL METHODS, v. 12, n. 8, p. 1030-1054, FEB 28 2020. Web of Science Citations: 0.
REGIART, MATIAS; KUMAR, ABHISHEK; GONCALVES, JOSUE M.; SILVA JUNIOR, GILBERTO J.; MASINI, JORGE CESAR; ANGNES, LUCIO; BERTOTTI, MAURO. An Electrochemically Synthesized Nanoporous Copper Microsensor for Highly Sensitive and Selective Determination of Glyphosate. CHEMELECTROCHEM, v. 7, n. 7 FEB 2020. Web of Science Citations: 1.
KUMAR, ABHISHEK; FURTADO, VINICIUS L.; GONCALVES, JOSUE M.; BANNITZ-FERNANDES, RENATA; NETTO, LUIS EDUARDO S.; ARAKI, KOITI; BERTOTTI, MAURO. Amperometric microsensor based on nanoporous gold for ascorbic acid detection in highly acidic biological extracts. Analytica Chimica Acta, v. 1095, p. 61-70, JAN 25 2020. Web of Science Citations: 0.
TASIC, NIKOLA; PAIXAO, THIAGO R. L. C.; GONCALVES, LUIS MOREIRA. Biosensing of D-dimer, making the transition from the central hospital laboratory to bedside determination. Talanta, v. 207, JAN 15 2020. Web of Science Citations: 0.
ARJUNAN, ANANTHI; SUKERI, ANANDHAKUMAR; SARAIVA, DOUGLAS PHILIP MARTINEZ; MIRANDA, PAULO BARBEITAS; BERTOTTI, MAURO. Electrochemical Studies of Hydrogen Peroxide Oxidation on a Nanoporous Gold Surface: Fundamental and Analytical Applications. Journal of the Electrochemical Society, v. 167, n. 11 JAN 8 2020. Web of Science Citations: 0.
SUKERI, ANANDHAKUMAR; ARJUNAN, ANANTHI; BERTOTTI, MAURO. New strategy to fabricate a polydopamine functionalized self-supported nanoporous gold film electrode for electrochemical sensing applications. Electrochemistry Communications, v. 110, JAN 2020. Web of Science Citations: 0.
KUMAR, ABHISHEK; GONCALVES, JOSUE M.; LIMA, ALAN R.; MATIAS, TIAGO A.; NAKAMURA, MARCELO; BERNARDES, JULIANA S.; ARAKI, KOITI; BERTOTTI, MAURO. Efficient and methanol resistant noble metal free electrocatalyst for tetraelectronic oxygen reduction reaction. Electrochimica Acta, v. 326, DEC 5 2019. Web of Science Citations: 0.
KUMAR, ABHISHEK; SELVA, JESSICA S. G.; GONCALVES, JOSUE M.; ARAKI, KOITI; BERTOTTI, MAURO. Nanoporous gold-based dopamine sensor with sensitivity boosted by interferant ascorbic acid. Electrochimica Acta, v. 322, NOV 1 2019. Web of Science Citations: 2.
DIAS, ANDERSON A.; CHAGAS, CYRO L. S.; SILVA-NETO, HABDIAS DE A.; 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. ACS APPLIED MATERIALS & INTERFACES, v. 11, n. 43, p. 39484-39492, OCT 30 2019. Web of Science Citations: 0.
KUMAR, ABHISHEK; GONCALVES, JOSUE M.; SELVA, JESSICA S. G.; ARAKI, KOITI; BERTOTTIZ, MAURO. Correlating Selective Electrocatalysis of Dopamine and Ascorbic Acid Electrooxidation at Nanoporous Gold Surfaces with Structural-Defects. Journal of the Electrochemical Society, v. 166, n. 14, p. H704-H711, SEP 30 2019. Web of Science Citations: 3.
AMEKU, WILSON A.; DE ARAUJO, WILLIAM R.; RANGEL, CLARA J.; ANDO, ROMULO A.; PAIXAO, THIAGO R. L. C. Gold Nanoparticle Paper-Based Dual-Detection Device for Forensics Applications. ACS APPLIED NANO MATERIALS, v. 2, n. 9, p. 5460-5468, SEP 2019. Web of Science Citations: 0.
HERNANDEZ-SARAVIA, LUCAS PATRICIO; SUKERI, ANANDHAKUMAR; BERTOTTI, MAURO. Fabrication of nanoporous gold-islands via hydrogen bubble template: An efficient electrocatalyst for oxygen reduction and hydrogen evolution reactions. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v. 44, n. 29, p. 15001-15008, JUN 7 2019. Web of Science Citations: 2.
SUKERI, ANANDHAKUMAR; DE CARVALHO JUNIOR, EDUARDO JOSE; BERTOTTI, MAURO. A novel approach for one-step fabrication of platinum-nanoporous gold film via oxygen bubble template with enhanced electrochemical activity. Electrochemistry Communications, v. 100, p. 96-99, MAR 2019. Web of Science Citations: 0.

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