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Development of a portable impedance analyzer

Grant number: 19/00101-8
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2019
Effective date (End): August 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal researcher:Osvaldo Novais de Oliveira Junior
Grantee:Lorenzo Antonio Buscaglia
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


Sensing based on electrical impedance measurements is used to detect changes in the physical and chemical properties of samples, permitting the automation of multiple diagnostic and monitoring processes. The use of biosensors and multisensors offers greater sensitivity and selectivity, for which impedance spectra are measured with numerous measurements, usually with an expensive commercial impedance analyzer that is not portable. In this Project, we shall develop a portable impedance analyzer for multiple automated measurements with sensor and biosensor arrays. The development steps will include design, prototyping, fabrication, implementation of dedicated software and testing with sensors and biosensors. The architecture proposed for the system, to be validated and explored throughout the Project, includes a microcomputer, a microcontroller and circuits for wireless communication, wave generation, filtering, analog multiplexing, amplification, AD conversion and display. The operation of the analyzer will be tested in collaboration with researchers from the São Carlos Institute of Physics who employ sensors and multisensors in the diagnosis of diseases and for detecting contamination in water and food. (AU)

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Scientific publications
(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)
SOARES, JULIANA COATRINI; SOARES, ANDREY COATRINI; RODRIGUES, VALQUIRIA CRUZ; OITICICA, PEDRO RAMON ALMEIDA; RAYMUNDO-PEREIRA, PAULO AUGUSTO; BOTT-NETO, JOSE LUIZ; BUSCAGLIA, LORENZO A.; DE CASTRO, LUCAS DANIEL CHIBA; RIBAS, LUCAS C.; SCABINI, LEONARDO; et al. Detection of a SARS-CoV-2 sequence with genosensors using data analysis based on information visualization and machine learning techniques. MATERIALS CHEMISTRY FRONTIERS, v. 5, n. 15, p. 5658-5670, . (19/07811-0, 18/19750-3, 20/02938-0, 16/01919-6, 18/18953-8, 19/13514-9, 14/50867-3, 16/23763-8, 18/22214-6, 19/00101-8)
BUSCAGLIA, LORENZO A.; OLIVEIRA, OSVALDO N.; CARMO, JOAO PAULO. Roadmap for Electrical Impedance Spectroscopy for Sensing: A Tutorial. IEEE SENSORS JOURNAL, v. 21, n. 20, p. 22246-22257, . (19/00101-8, 18/22214-6)
BOTT-NETO, JOSE L.; MARTINS, THIAGO S.; BUSCAGLIA, LORENZO A.; SANTIAGO, PATRICIA V. B.; FERNANDEZ, PABLO S.; MACHADO, SERGIO A. S.; OLIVEIRA JR, OSVALDO N.. A portable system for photoelectrochemical detection of lactate on TiO2 nanoparticles and [Ni(salen)] polymeric film. SENSORS AND ACTUATORS B-CHEMICAL, v. 345, . (18/22214-6, 19/00101-8, 17/11986-5, 19/13514-9, 18/20952-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
BUSCAGLIA, Lorenzo Antonio. Development of a Portable Impedance Spectrometer. 2022. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC/BT) São Carlos.

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