Base isolation is one of the most successful strategies in modern earthquake engineering. The basic idea is to decouple a structure from the ground beneath it by inserting flexible bearings between the foundation and the superstructure, so that violent ground motions are filtered out before they reach the floors above. Conventional isolation systems, however, are largely passive: once installed, their stiffness and damping properties are fixed, and they cannot adapt to the particular frequency content or intensity of an incoming earthquake. Active and semi-active control systems can adapt, but they typically require external power supplies, which raises a vexing practical question during exactly the events they are designed for, when electrical grids are among the first pieces of infrastructure to fail.

The Turkish team’s hybrid concept addresses that vulnerability by closing the energy loop inside the isolation system itself. PVDF is a flexible piezoelectric polymer that generates an electrical charge when it is mechanically deformed. In the proposed system, PVDF layers are integrated into the base isolation mechanism, where the relative displacements and strains produced during shaking deform the polymer and generate voltage. Numerical modeling carried out in the finite element software ANSYS confirmed that these layers can convert seismic-induced strains into usable electrical energy, which then powers electromagnets to produce control forces that oppose the motion of the structure. In effect, the earthquake charges the system, and the system spends that charge damping the earthquake.

The self-powered character of the design is what makes the results striking. In the experimental campaign, the PVDF layers generated voltage outputs of up to 102 volts, demonstrating the feasibility of operating the electromagnetic control stage without any external power source. The authors are careful to note the caveats: the measured voltage outputs may vary depending on the structural irregularities of the building and on the frequency content of each earthquake, and the repeatability of the results is subject to the experimental and scaling limitations inherent in laboratory testing. Even so, a hundred-volt-class output harvested from a scaled shaking table test represents a meaningful proof of concept for energy-autonomous structural control.

The experimental program was unusually thorough for a study of this kind. The researchers built eight steel frame models at 1/10 scale and tested them on a shaking table under eleven representative earthquake records from Türkiye, a country that sits on some of the most active fault systems in the world and suffered devastating earthquakes in Kahramanmaraş in 2023. Crucially, the eight models were not all identical. The team included both regular configurations and irregular ones, specifically frames with torsional irregularity, soft-story conditions, and vertical discontinuity. These irregularity classes are among the most dangerous features in real buildings, because they concentrate seismic demand in unpredictable locations and have been implicated in many collapse events.

Testing across such a diverse set of structural configurations matters because base isolation does not perform uniformly on all buildings. Irregular structures respond to ground motion in complicated ways: torsionally irregular frames twist as well as translate, soft stories concentrate deformation in a single vulnerable level, and vertical discontinuities create abrupt changes in stiffness and mass that can amplify local response. A control system that works well on a regular, symmetric laboratory model may behave very differently on a real building with a tall open ground floor or a setback upper story. By subjecting all eight configurations to the same battery of eleven ground motions, the study provides a more realistic picture of how the hybrid system performs across the messy variety of the actual building stock.

The underlying physics of the system draws on two well-established research streams that have rarely been merged at the base of a building. Piezoelectric energy harvesting has been explored for decades in contexts ranging from instrumented knee implants to pavement-embedded transducers that generate power from footsteps, and researchers have long recognized that structural vibrations could power wireless sensors and small devices. Electromagnetic damping and electromagnetic isolation, meanwhile, have been studied as means of providing tunable, controllable restoring and dissipative forces without mechanical contact. The innovation in the new work lies in coupling the two: the piezoelectric layer acts as both a sensor of structural strain and a generator of the electricity that the electromagnetic actuator consumes, eliminating the need for a separate power and sensing infrastructure.

The study builds on a doctoral thesis completed at Atatürk University and was supported by the university’s Scientific Research Projects Coordination Unit under project numbers FKP-2023-12377 and FBG-2022-11620. The research sits within a broader international effort, documented in recent review literature, to develop smart and hybrid isolation systems, some of which envision integration with earthquake early warning networks. What distinguishes the PVDF-based approach is its sustainability argument: rather than dissipating seismic energy purely as heat in viscous or frictional elements, the system captures a portion of that energy, converts it to electricity, and redeploys it as active control force, improving structural resilience while providing what the authors describe as sustainable seismic energy dissipation.

The implications for both existing and newly designed buildings could be significant. Retrofitting vulnerable structures is one of the great unsolved challenges of earthquake engineering, particularly in seismically active, economically constrained regions, and any technology that reduces dependence on external power and complex control hardware lowers the barrier to adoption. Because the hybrid system operates at the base of the structure, it could in principle be incorporated into isolation layers added beneath existing buildings or designed into new foundations from the start. The authors report that the overall findings confirm the hybrid system improves structural resilience while offering a promising pathway for both categories of construction.

Considerable engineering work remains before such a system could be specified for a real building. The experiments were conducted on 1/10-scale models, and scaling effects mean that voltage outputs, force magnitudes, and control performance at full scale cannot be read directly from these results. The sensitivity of the harvested voltage to earthquake frequency content means that the system’s self-sufficiency would need to be verified across the full spectrum of possible ground motions, including near-fault pulses with long-period velocity components that pose particular challenges for isolated structures. Power conditioning, energy storage, and the reliability of electromagnetic actuators under sustained seismic loading would all require dedicated development. Yet the core demonstration, that a building’s foundation can harvest the energy of an earthquake and immediately spend it protecting the structure above, stands as a compelling glimpse of where structural control may be heading: toward buildings that do not merely endure earthquakes, but feed on them.

Subject of Research: A PVDF-based hybrid base isolation system that harvests seismic energy to power electromagnetic vibration control

Article Title: Seismic energy dissipation and vibration mitigation through a PVDF-based hybrid base isolation system with electromagnetic control

Article References: Çelebi, O., & Aydın, A. C. (2026). Seismic energy dissipation and vibration mitigation through a PVDF-based hybrid base isolation system with electromagnetic control. Bulletin of Earthquake Engineering. https://doi.org/10.1007/s10518-026-02671-x

Image Credits: AI Generated

DOI: 10.1007/s10518-026-02671-x

Keywords: base isolation, PVDF, piezoelectric energy harvesting, electromagnetic damping, seismic energy dissipation, shaking table tests, structural control, structural irregularities, earthquake engineering, vibration mitigation, self-powered systems, steel frame models