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Study of organic devices for application in bioelectronics

Grant number: 17/20809-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): July 01, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal researcher:Carlos Frederico de Oliveira Graeff
Grantee:Miguel Henrique Boratto
Home Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
Associated research grant:13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
Associated scholarship(s):20/04721-8 - PEDOT:PSS and Melanin as active layers in neuromorphic devices, BE.EP.PD


The search for improvement in data storage and processing systems as well as future integration with biological systems requires a profound investigation of non-volatile organic memories through the use of devices that emulate synaptic and neuronal functions, and are composed of flexible biocompatible components for interaction with biological tissue. Real devices simulating synapses and small neural networks have been successfully developed based on electrochemical transistors and promise a revolution in present data storage and processing. Electrochemical Organic Transistors (EOTs) are very important due to the fact of its working mechanisms and performance be similar to real brain synapses, and some of these devices have presented hundreds of conductivity states under low voltage operation. Therefore, aiming the improvement in data storage and processing, in this project the developing of EOTs based in PEDOT:PSS thin films with different concentrations of melanin is proposed. The PEDOT:PSS is a p-type semiconductor with high performance in EOTs due to its high interaction with ions at the semiconductor/electrolyte interface, and the melanin is a biopigment with ionic properties and biocompatibility for future applications in bioelectronics. Electrolytes of NaCl and KCl are interesting and present high switching speed in EOTs. In addition, memristors (resistive memories) will be developed using latex and melanin to obtain high-performance non-volatile memories.

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Scientific publications (7)
(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)
FAITA, F. L.; AVILA, L. B.; SILVA, J. P. B.; BORATTO, M. H.; PLA CID, C. C.; GRAEFF, C. F. O.; GOMES, M. J. M.; MUELLER, C. K.; PASA, A. A. bnormal resistive switching in electrodeposited Prussian White thin film. Journal of Alloys and Compounds, v. 896, MAR 10 2022. Web of Science Citations: 0.
LIMA, JOAO V. M.; SANTOS, STEVAN B. O.; SILVA, RAFAEL A.; BORATTO, MIGUEL H.; GRAEFF, CARLOS F. O.; SCALVI, LUIS V. A. Anomalous diode behavior of Cu2S/SnO2 p-n junction. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 32, n. 16 JUL 2021. Web of Science Citations: 0.
BORATTO, MIGUEL H.; LINHARES, ALEXANDRO A.; CONGIU, MIRKO; BATAGIN-NETO, AUGUSTO; PLA-CID, CRISTIANI C.; PASA, ANDRE A.; GRAEFF, CARLOS F. O. Cu2+ cation-exchange in ZnxCd1-xS thin films for neuromorphic devices. Applied Surface Science, v. 537, JAN 30 2021. Web of Science Citations: 0.
BORATTO, MIGUEL H.; NOZELLA, NATAN L.; RAMOS, JR., ROBERTO A.; DA SILVA, RAFAEL APARECIDO; GRAEFF, CARLOS F. O. Flexible conductive blend of natural rubber latex with PEDOT:PSS. APL Materials, v. 8, n. 12 DEC 1 2020. Web of Science Citations: 0.
BORATTO, MIGUEL H.; LIMA, JOAO V. M.; SCALVI, LUIS V. A.; GRAEFF, CARLOS F. O. Low-temperature ZrO(2)thin films obtained by polymeric route for electronic applications. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 31, n. 18 AUG 2020. Web of Science Citations: 0.
BARREIRA, ENZO A.; PEDRINI, LUIZ F. K.; BORATTO, MIGUEL H.; SCALVI, LUIS V. A. A dynamic time-temperature-dependent process for thermal oxidation of Sn leading to SnOx thin films: Impedance spectroscopy study. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, v. 34, n. 19 JUL 30 2020. Web of Science Citations: 0.
CERRA, SARA; PICA, PARIDE; CONGIU, MIRKO; BORATTO, M. H.; GRAEFF, C. F. O.; FRATODDI, ILARIA. Gold nanoparticles functionalized with 4,4'-dithiobiphenyl blended with CuS in PMMA for switching memory devices. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 31, n. 15 JUN 2020. Web of Science Citations: 0.

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