Carlos De Marqui Junior

As the PI, Carlos De Marqui Junior coordinates and organizes the local staff at EESC/USP to support the research team in all required tasks (scientific and administrative).

Academic Profile & Research Trajectory
Dr. Carlos de Marqui Júnior is a full professor in the Department of Aeronautical Engineering at the University of São Paulo (USP), São Carlos School of Engineering. He held visiting positions at Virginia Tech (2008–2009) and Georgia Tech (2015-2016). Prof. De Marqui leads the Laboratory of Aeroelasticity and Smart Structures, focusing on aeroelasticity, vibration control, energy harvesting, and smart metamaterials. He currently heads the FAPESP thematic project ENVIBRO, aiming to design periodic structures with enhanced vibro-acoustic performance.

Research Focus & Themes
Throughout his career, Dr. De Marqui has specialized in piezoelectric materials integrated into aerospace structures to suppress vibrations, mitigate flutter, harvest energy, and manipulate waves. His early work focused on the modeling and analysis of piezoelectric energy harvesting using aeroelastic vibrations. More recently, his efforts have pivoted towards smart metamaterials, designing adaptive, broadband structures capable of controlling vibrations and noise through reconfigurable piezoelectric and nonlinear elements. His work on Duffing-type and negative‑capacitance metastructures exemplifies this shift.

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1. Nonlinear Piezoelectric Metastructures with Duffing/NES Dynamics
In early 2024, De Marqui and coauthors published two papers highlighting nonlinear mechanisms for broadband vibration attenuation. One, in Journal of Sound and Vibration, examines negative-capacitance circuits paired with Duffing-type piezoelectric shunts, showing enhanced frequency coverage in vibration control systems. Complementing this, International Journal of Mechanical Sciences features their work on combined Duffing and nonlinear energy sink (NES) metastructures for multimodal attenuation across wide frequency bands—offering a potent tool to broad-spectrum dampening in adaptive structural systems.

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2. Programmable Defects & Space-Time Wave Manipulation
Also around 2021–22, De Marqui contributed to work on programmable metamaterial beams. Collaborators showed that by modulating local piezoelectric resonators in time and space, one can dynamically “move” defects through an electromechanical metastructure—allowing precise control over wave localization, energy transfer, and beam steering. This pioneering spatiotemporal approach suggests exciting pathways for reconfigurable metamaterials with potential applications in sensing, targeted energy harvesting, and adaptive vibration control.

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3. Graded Architectures and Advanced Vibro-Acoustic Control
Expanding further, Dr. de Marqui has investigated spatial grading in piezoelectric metamaterials. In the 2023 paper “Vibro-acoustic performance of graded piezoelectric metamaterial plates,” the authors demonstrated how gradient distributions of piezoelectric resonators, in terms of geometry and electrical impedance, can produce broad attenuation zones and reduce noise transmission in structural components. These graded plates act as spatial filters, attenuating different frequency bands along their surface. Combined with earlier contributions in programmable metastructures and topologically protected modes, this work underscores his holistic approach to designing multifunctional smart materials that integrate topology, nonlinearity, and adaptive control.

The paper “Reconfigurable piezoelectric metamaterial for selective noise directivity: (Journal of Sound and Vibration) introduces a piezoelectric metamaterial plate composed of an array of piezoelectric unit cells with shunt circuits whose inductive resonance frequencies can be spatially reconfigured. By varying the tuning configuration across the plate, the researchers aimed to control the vibration characteristics and the resulting acoustic radiation patterns — effectively allowing adaptive control over which directions the plate emits or suppresses sound.

The research group includes:

Journal Papers

• Beli, D.; Rosa, M. N.; Lomazzi, L.; De Marqui Jr, C.; Ruzzene, M. Interface States in Two-Dimensional Quasicrystals with Broken Inversion Symmetry. Physical Review Applied, V. 23, P. 024039, 2025.
• Caetano Junior, V.; De Marqui Jr, C. Thermally Tunable Topological Interface States for Flexural Wave Demultiplexing in One-Dimensional Metamaterials. Smart Materials and Structures, V. Online, P. 1, 2025.Schimidt, C. S.; Oliveira, L.P.R.; De Marqui Jr., Carlos. Vibro-Acoustic Performance of Graded Piezoelectric Metamaterial Plates. Composite Structures, V. 327, P. 117656, 2024.
• Mosquera-Sánchez, J.A.; Alfahmi, O.; Erturk, A.; De Marqui Jr, C. Broadening the Frequency Response of A Duffing-Type Piezoelectric Shunt By Means Of Negative Capacitance. Journal of Sound and Vibration, V. Online, P. 118344, 2024.
• Schimidt, C. S.; Oliveira, L.P.R.; De Marqui Jr., C. Reconfigurable Piezoelectric Metamaterial for Selective Noise Directivity. Journal of Sound and Vibration, V. 118472, P. 118472-28, 2024.
• Kuhnert, W. M.; Silva, T. M. P.; De Marqui Jr., C.; Cammarano, A.; Goncalves, P. J. P. Application of a Shunt Damping Circuit in A Structure with an Electromagnetically Coupled Beam: Free Vibration and Frequency Response. Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online), V. 46, P. 1-14, 2024.
• Mosquera-Sánchez, J.A.; De Marqui, C. Broadband and Multimode Attenuation in Duffing- And Nes-Type Piezoelectric Metastructures. International Journal of Mechanical Sciences, V. 270, P. 109084, 2024.
• Amaral, A.C.G; De Marqui, C.; Silveira, M. Aeroelastic Energy Harvesting in Flutter Condition Increases with Combined Nonlinear Stiffness and Nonlinear Piezoelectrical Coupling. Journal of the Brazilian Society of Mechanical Sciences and Engineering, V. 45, P. 1, 2023.
• Thomes, R.L.; Beli, D.; Sugino, C. E.; Erturk, A.; De Marqui Junior, C. Programmable Moving Defect for Spatiotemporal Wave Localization in Piezoelectric Metamaterials. Physical Review Applied, V. 19, P. 064031-1-8, 2023.
• Ribeiro, F. A.; De Marqui Júnior, C.; Bueno, D. D. Flutter Analysis Including Structural Uncertainties Using a Relaxed LMI-Based Approach. Journal of the Brazilian Society of Mechanical Sciences and Engineering, V. 45, P. 1-10, 2023.
• Schimidt, C.S.; Sousa, V.C.; De Marqui, C. Piezoelectric Energy Harvesting in Graded Elastic Metastructures Using Continuous and Segmented Electrodes. Journal of the Brazilian Society of Mechanical Sciences and Engineering, V. 45, P. 329, 2023.
• Beli, D.; Rosa, M. N.; De Marqui Jr., C.; Ruzzene, M. Wave Beaming and Diffraction in Quasicrystalline Elastic Metamaterial Plates. Physical Review Research, V. 4, P. 043030, 2022.
• Thomes, R.L. ; Beli, D., De Marqui Jr., C. Space–time wave localization in electromechanical metamaterial beams with programmable defects. Mechanical Systems and Signal Processing, v. 167, Part B, p. 108550, 2022.
• Sampaio, L. Y. M.; Rodrigues, G. K.; Mosquera-Sanchez, J. A.; De Marqui Jr., C.; Oliveira, L. P. R. Membrame smart metamaterials for unidirectional wave propagation problems. Journal of Sound and Vibration, 512, 116374, 2021.
• Thomes, R. L.; Mosquera-Sanchez, J. A.; De Marqui Jr., C. Bandgap widening by optimized disorder in one-dimensional locally resonant piezoelectric metamaterials. Journal of Sound and Vibration, 512, 116369, 2021.
• Mosquera-Sanchez, J. A.; De Marqui Jr. C. Dynamics and wave propagation in nonlinear piezoelectric metastructures. Nonlinear Dynamics, 2021.
• Beli, D.; Rosa, M.I.N; De Marqui Jr, C.; Ruzzene, M. Mechanics and dynamics of two-dimensional quasicrystalline composites. Extreme Mechanics Letters, 44, 101220, 2021.
• Beli, D. ; Ruzzene, M. ; De Marqui Jr., Carlos. Bridging Coupling Phenomenon in Linear Elastic Metamaterials by Exploiting Locally Resonant Meta-Chain Isomers. Physical Review Applied, 14, 034032, 2020.
• Silva, T. M.P. ; Clementino, M. A. ; Sousa, V C ; De Marqui Jr., C. An experimental study of a piezoelectric metastructure with adaptive resonant shunt circuits. IEEE/ASME Transactions on Mechatronics, v. online, p. 1-1, 2020.
• Sousa, V.C., Tan, D., De Marqui, Jr., C., and Erturk, A., 2018, “Tunable Metamaterial Beam with Shape Memory Alloy Resonators: Theory and Experiment,” Applied Physics Letters, 113, 143502 (5pp)
• Sousa, V.C., Sugino, C., De Marqui, Jr., C., and Erturk, A., 2018, “Adaptive Locally Resonant Metamaterials Leveraging Shape Memory Alloys,” Journal of Applied Physics, 124, 064505 (11pp) (Editor’s Pick).

Conference Papers

• THOMES, R. L.; MOSQUERA-SÁNCHEZ, J.;  DE MARQUI JR., C., An investigation of optimal non-uniform locally resonant piezoelectric metamaterials. SPIE Smart NDE: Active and Passive Smart Structures and Integrated Systems IX 11376, 1137612, 2020.
• MOSQUERA-SÁNCHEZ, J.;  DE MARQUI JR., C., Effect of negative capacitance circuits on the performance of a piezoelectric nonlinear energy sink. SPIE Smart NDE: Active and Passive Smart Structures and Integrated Systems IX 11376, 1137612, 2020.
• DOURADO, M. K. ; GONCALVES, P. J. P. ; De Marqui Jr., Carlos ; BELI, D. . ACTIVE CONTROL OF BAND GAPS ON A SMART BEAM. In: COBEM 2019, 2019, Uberlândia. Proceedings of COBEM 2019. Rio de Janeiro: ABCM, 2019.
• BELI, D.; DE MARQUI JR., C. . Enlarging the vibration attenuation bandwidth of 1D elastic metamaterials with coupled resonators. In: XL Ibero-Latin American Congress on Computational Methods in Engineering, 2019, Natal, RN, Brazil. Proceedings of CILAMCE 2019, 2019.