Article
Engineering, Mechanical
Hanjie Xiao, Tianrun Li, Liang Zhang, Wei-Hsin Liao, Ting Tan, Zhimiao Yan
Summary: Piezoelectric energy harvesting technology using acoustic metamaterials improves sound energy density and conversion efficiency. A fully coupled electromechanical model is crucial for accurate prediction and optimization of sound energy harvesting based on acoustic metamaterials.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Yigit Tuncel, Toygun Basaklar, Umit Ogras
Summary: This article proposes a piezoelectric energy harvester for wearable devices placed on the knee joint, which uses walking motion to generate energy. Through analytical modeling and experimental validation, the results show that the proposed model estimates the harvested power with less than 5% error for all gait speeds and sensor configurations. Additionally, the proposed harvester can generate 161 mu W power at 5 mph, which is sufficient to sustain a 35 mu A load.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Multidisciplinary
Bin Bao, Quan Wang, Nan Wu, Shaoyi Zhou
Summary: This research introduces a hand-held piezoelectric energy-harvesting structure for portable human-motion energy harvesting, and analyzes the dynamic changes of electric and magnetic fields during rotation through simulation and treadmill experiments. The results demonstrate that the device can generate a certain voltage at specific speeds and charge a capacitor accordingly.
Article
Materials Science, Composites
Weipeng Sun, Kexin Zhong, Yuanyuan Liu, Hanjie Xiao, Daoli Zhao, Zhimiao Yan, Ting Tan
Summary: This study demonstrates through mathematical analysis and experiments that selecting an appropriate thickness for the substrate of acoustic metamaterials can enhance the output power of acoustic energy harvesters. The findings of this research will contribute to the development of high-performance metamaterial-based acoustic energy harvesters.
COMPOSITES COMMUNICATIONS
(2022)
Article
Thermodynamics
S. M. Osinaga, S. P. Machado, M. Febbo
Summary: This paper studies the influence of nonlinear constitutive piezoelectric parameters on the electromechanical coupled response of a clamped-clamped axially loaded energy harvester. The partial differential equations governing the problem are derived using Hamilton's principle and discretized using the Galerkin method. An approximated solution for the single mode representation is obtained using the Method of Multiple Scales (MMS) and compared with direct numerical integration, showing excellent results. Experimental testing of a prototype device confirms the need to consider nonlinear piezoelectric relationships for accurate voltage prediction.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Rakesh Ranjan Chand, Amit Tyagi
Summary: This article presents a parabolic tapering width piezoelectric energy harvester under rotational excitation. The proposed harvester has high voltage-per-total mass and performance amplification factor, as well as a low natural frequency. The findings of this research can be applied in real-time health monitoring and fault detection of rotating machine components.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Feng Qian, Yabin Liao, Lei Zuo, Phil Jones
Summary: This study focuses on utilizing an equivalent linear circuit method to couple piezoelectric energy harvesters with AC-DC interface circuits, enabling analysis, design, and optimization of PEH systems at the system level.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Chemistry, Physical
Huijun Kong, Zhongqian Song, Weiyan Li, Minqi Chen, Yu Bao, Zhenbang Liu, Dongyang Qu, Yingming Ma, Zhenxin Wang, Dongxue Han, Li Niu
Summary: This study introduces a novel dual-mode pressure sensor based on elastic cylinder-induced flextensional transduction, which exhibits self-protective characteristic and enhanced sensitivity. The sensor can convert normal force to lateral expansion force, and has potential applications in piezoelectric energy harvesting devices, dynamic-static pressure detection, and sports evaluation.
Article
Engineering, Multidisciplinary
Khaled Mohamed, Hassan Elgamal, Sallam A. Kouritem
Summary: This research focuses on optimizing the geometry and natural frequency of piezoelectric energy harvesters to improve efficiency. The combination of genetic algorithm and COMSOL optimization module has significantly increased power output. Experimental validation of COMSOL results and investigation into the impact of cantilever length, tip mass, and piezoelectric material volume on output voltage were conducted.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
J. R. Leppe-Nerey, M. E. Nicho, F. Z. Sierra-Espinosa, F. Hernandez-Guzman, M. Fuentes-Perez
Summary: Polymeric materials, such as PVDF, are being studied for macro sources of power in vehicles or asphalt. Blends of PVDF with PMMA were investigated to create low-cost, high-performance materials for energy harvesting. The 70 wt% PVDF/PMMA blend showed a linear response to normal stress.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Energy & Fuels
E. F. Rojas, S. Faroughi, A. Abdelkefi, Y. H. Park
Summary: A reduced-order model considering material structure, size dependency, and surface smoothness effects was developed to study the performance of piezoelectric and/or flexoelectric systems at different scale levels. The study showed that at nanoscale, the combined piezoelectric and flexoelectric configuration and the flexoelectric only configuration perform similarly, but at transition scales, from nano to micro, the combined system outperforms either configuration. A non-smooth surface was found to increase the harvested power levels of the system in all cases, indicating that a piezoelectric-flexoelectric system can generate more power than previously thought near the microscale.
Article
Construction & Building Technology
Yangsen Cao, Fan Zhang, Aimin Sha, Zhuangzhuang Liu, Jiarong Li, Yun Hao
Summary: Using piezoelectric materials to convert mechanical energy into electrical energy provides ideas for energy self-consistency of road infrastructure. This study evaluates the piezoelectric response and long-term performance of piezoelectric transducers applied to pavements. The results show that the new piezoelectric transducer has a good electrical response after being applied to the pavement structure, and factors such as loading speed, temperature, and particle size can affect energy harvesting.
ENERGY AND BUILDINGS
(2022)
Article
Green & Sustainable Science & Technology
Ataollah Gharechae, Abuzar Abazari, Mohammad Javad Ketabdari
Summary: The unique objective of this study is to assess the possibility of energy harvesting by attaching piezoelectric patches on the high-density polyethylene floater of aquaculture fish cages. The study developed a model to analyze the elastic motion of the floater in regular linear sea waves and investigated the effects of various variables on the generated power. The results indicate that installing patches in the proper place can provide the required electrical power for low-powered applications such as sea environmental monitoring.
Article
Engineering, Electrical & Electronic
Nadeem Tariq Beigh, Dhiman Mallick
Summary: The study optimized the process flow for ZnO/SU-8 and BTO/SU-8 nanocomposite thin films, achieving satisfactory piezoelectric response and UV transparency for mechanical energy harvesting applications. Three different energy harvesting devices were fabricated with high output power and open-circuit voltage.
IEEE SENSORS JOURNAL
(2021)
Article
Polymer Science
Yijing Jiang, Yongju Deng, Hongyan Qi
Summary: Controlling the microstructure of flexible piezoelectric materials enhances the electrical output performance of nanogenerators, with the best results achieved in well-aligned nanofiber arrays. This research sheds light on the potential application of flexible piezoelectric polymer-based nanogenerators in wearable electronic devices.
