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Obtainment of reduced graphene oxide to sensor systems of aerospace industry


Increasing safety of air navigation through the development of sensory materials represents important innovation in the field of intelligent transport applications. For this purpose, graphene nanocomposites can be used. Redundant systems for aerospace navigation are essential since they provide the information required for a safe flight in case of failure of a primary system. An important parameter for guiding an aircraft is speed, and the main device responsible for indicating this measurement is known as static-pitot tube. The failure of this device has already caused serious air crashes, killing hundreds of people. Thus, this research intented to develop an aeronautical sensor that acts to assist the static-pitot system in case of failure it. The base of this sensor is composed of pressure sensitive paint and reduced graphene oxide, in order to form an electrode capable of generating a specific electrochemical response to determined oxygen concentration. For analysis of the device in question will be performed: morphological tests by MEV, FEG and AFM; structural, by techniques such as XRD, Raman, XANES and XPS; Electrochemical Impedance Spectroscopy (EIS); amperometric and differential pulse voltammetry techniques. The electrochemical techniques will support the static tests, with samples of the sensory material in glove box (simulating pressure at altitude, for calibration of the material), and dynamic in wind tunnel (simulating pressure in external flow to the sensor). (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)
DE ARRUDA, MILENA NAKAGAWA; PALLEY, BIANCA FORTES; DE SOUZA, GUSTAVO FREITAS; LOPEZ, LIGIA; PONTES, MARCELO ANDRE PETRY; FERNANDES, WILLIANS PRINCIPE; GANDARA, MERIENE; MACHADO, FRANCISCO BOLIVAR CORRETO; FERRAO, LUIZ FERNANDO DE ARAUJO; GONCALVES, EMERSON SARMENTO. Physicochemical characterization of a low-oxygen composite based on chitosan and electrochemically exfoliated graphene. Materials Chemistry and Physics, v. 306, p. 10-pg., . (22/16385-8, 17/17661-0, 22/02737-0, 22/02347-7)
GRAVES, DAVID A.; THEODOROVIEZ, LUCAS B.; DE OLIVEIRA, THAIS C.; CIVIDANES, LUCIANA S.; FERREIRA, NEIDENEI G.; ALMEIDA, DALVA A. L.; GONCALVES, EMERSON S.. Enhanced electrochemical properties of polyaniline (PANI) films electrodeposited on carbon fiber felt (CFF): Influence of monomer/acid ratio and deposition time parameters in energy storage applications. Electrochimica Acta, v. 454, p. 11-pg., . (17/17661-0, 21/04427-5, 22/02737-0, 19/27394-5)
PALLEY, BIANCA FORTES; ARTUR, JULIO CESAR; DE ARRUDA, MILENA NAKAGAWA; DE SOUZA, GUSTAVO FREITAS; GRAVES, DAVID ALEXANDRO; DE CARVALHO BOVOLATO, ANA LIVIA; DEFFUNE, ELENICE; SCHELP, ARTHUR OSCAR; GONCALVES, EMERSON SARMENTO; DE MORAES, MARLI LEITE. Screen-Printed Electrodes on Tyvek Substrate as Low-Cost Device to Applications in Alzheimer's Disease Detection. Journal of the Electrochemical Society, v. 169, n. 3, p. 7-pg., . (17/17661-0, 19/27394-5, 21/04427-5, 18/04648-9)

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