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Design and control of self-organized electrochemical patterns

Grant number: 16/01817-9
Support type:Research Grants - Young Investigators Grants
Duration: October 01, 2016 - September 30, 2021
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Raphael Nagao de Sousa
Grantee:Raphael Nagao de Sousa
Home Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated grant(s):18/21619-2 - Engineering self-organized nanostructured materials by nonlinear chemical dynamics control, AP.R SPRINT
17/00089-2 - Multi-user equipament approved in grant 16/01817-9: ellipso-microscopy for surface imaging, AP.EMU
Associated scholarship(s):19/18847-6 - Electrochemical instabilities in lithium-ion and lithium-oxygen batteries: an in operando investigation, BP.DD
19/22202-0 - Preparation and characterization of nanostructured Cu/Sn electrodeposits formed by feedback potential control, BP.IC
19/08244-2 - Synthesis of nanowires for application in the reduction reaction of carbon dioxide, BP.DR
+ associated scholarships 19/03273-4 - Calculation of the Lyapunov exponent and the morphological period of time series in nickel oscillatory dissolution, BP.IC
19/03963-0 - Control of self-organized nanostructures induced by the geometric isomerization of azobenzene molecules, BP.IC
17/22387-5 - Oscillations and multi stability in organic reactions of prebiotic relevance, BP.IC
17/05592-4 - Spatial-temporal resolution of surface metallic oxides on electrochemical oscillators, BP.MS
16/22262-5 - Design and control of self-organized electrochemical patterns, BP.JP - associated scholarships


Electrochemical oscillators are considered unique model-systems in mimicry emergent behavior ubiquitously found in nature. This complexity, expressed in terms of spontaneous formation of self-organized patterns far from thermodynamic equilibrium, can be manipulated accurately by techniques developed in synchronization engineering. In practice, the application of controlling methodologies and the rational design of these spatial structures have been supported by an exclusive adjustment of experimental parameters that affect the system as a whole, refraining from a detailed physical-chemical description. This project, therefore, aims to establish relations between the nonlinear dynamics with the molecular chemical kinetics involved in the self-organizing phenomenon and, consequently, to favor the selective obtaining of a desired pattern by previous knowledge of the reaction mechanism aspects. The base system that will be studied is related to the oxides distribution on the surface during the electrochemical dissolution and deposition of transition metals, their alloys and, semiconductors. The spatiotemporal resolution will be achieved by the extraction of surface images of the spatial metallic oxides distribution via ellipsometry measurements (ellipso-microscopy for surface imaging, EMSI). The images will be compared simultaneously with the overall current and potential changes. Mathematical modeling and numerical simulations based on a deterministic treatment will be carried out in parallel with the experiments, aiming to deepen the understanding of the connection between the reaction kinetics and the self-organized electrochemical dynamics. The approach of this project is interdisciplinary which favors partnerships already established in national and international scope. (AU)

Matéria(s) publicada(s) na Agência FAPESP sobre o auxílio:
Group produces materials via self-organization in chemical systems 

Scientific publications (9)
(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)
PINTO, MARIA R.; PEREIRA, GUILHERME B.; QUEIROZ, ADRIANA C.; NAGAO, RAPHAEL. Influence of the Ligands in Cu(II) Complexes on the Oscillatory Electrodeposition of Cu/Cu2O. Journal of Physical Chemistry C, v. 124, n. 23, p. 12559-12568, JUN 11 2020. Web of Science Citations: 0.
PINTO, MARIA R.; COSTA, GABRIEL F.; MACHADO, EDUARDO G.; NAGAO, RAPHAEL. Self-Organization in Electrochemical Synthesis as a Methodology towards New Materials. CHEMELECTROCHEM, v. 7, n. 14 MAY 2020. Web of Science Citations: 0.
GALUPPO, CAROLINA; ALVARENGA, JAQUELINE; QUEIROZ, ADRIANA C.; MESSIAS, IGOR; NAGAO, RAPHAEL; ABBEHAUSEN, CAMILLA. The electrosynthesis of gold(I) complexes: A clean, one-pot method. Electrochemistry Communications, v. 110, JAN 2020. Web of Science Citations: 0.
MENEZES, LAURA; PARMA, EDUARDO; MACHADO, EDUARDO G.; NAGAO, RAPHAEL. Quasiperiodic behavior in the electrodeposition of Cu/Sn multilayers: extraction of activation energies and wavelet analysis. Physical Chemistry Chemical Physics, v. 21, n. 37, p. 21057-21063, OCT 7 2019. Web of Science Citations: 0.
DOS SANTOS, CAIO G. P.; MACHADO, EDUARDO G.; KISS, ISTVAN Z.; NAGAO, RAPHAEL. Investigation of the Oscillatory Electrodissolution of the Nickel-Iron Alloy. Journal of Physical Chemistry C, v. 123, n. 39, p. 24087-24094, OCT 3 2019. Web of Science Citations: 0.
KITAGAKI, BIANCA T.; PINTO, MARIA R.; QUEIROZ, ADRIANA C.; BREITKREITZ, MARCIA C.; ROSSI, FEDERICO; NAGAO, RAPHAEL. Multivariate statistical analysis of chemical and electrochemical oscillators for an accurate frequency selection. Physical Chemistry Chemical Physics, v. 21, n. 30, p. 16423-16434, AUG 14 2019. Web of Science Citations: 0.
NAGAO, RAPHAEL; DE MIRANDA, RENAN C. C.; EPSTEIN, IRVING R.; DOLNIK, MILOS. Modulation of Turing Patterns in the CDIMA Reaction by Ultraviolet and Visible Light. Journal of Physical Chemistry A, v. 123, n. 5, p. 992-998, FEB 7 2019. Web of Science Citations: 0.
ROSPENDOWISKI, JULIA; PINTO, MARIA R.; HESSEL, CRISTIAN; SITTA, ELTON; NAGAO, RAPHAEL. Tuning Electrochemical Bistability by Surface Area Blocking in the Cathodic Deposition of Copper. ACS OMEGA, v. 3, n. 10, p. 13636-13646, OCT 2018. Web of Science Citations: 1.
DA SILVA, KALINE N.; NAGAO, RAPHAEL; SITTA, ELTON. Alkali Cation Effect During the Oscillatory Electroreduction of H2O2 on Pt. CHEMISTRYSELECT, v. 2, n. 35, p. 11713-11716, DEC 11 2017. Web of Science Citations: 0.

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