A5041383884- Innovative Energy Harvesting Technologies
- Energy Harvesting in Wireless Networks
- Advanced Sensor and Energy Harvesting Materials
- Vibration Control and Rheological Fluids
- Acoustic Wave Phenomena Research
- Wireless Power Transfer Systems
- Advanced Thermodynamic Systems and Engines
- Vibration and Dynamic Analysis
- Fluid Dynamics and Vibration Analysis
- Structural Health Monitoring Techniques
- Metamaterials and Metasurfaces Applications
- Hydrology and Watershed Management Studies
- Refrigeration and Air Conditioning Technologies
- Conducting polymers and applications
- Advanced Materials and Mechanics
- Advanced Thermodynamics and Statistical Mechanics
- Dielectric materials and actuators
- Aeroelasticity and Vibration Control
- Thermal Radiation and Cooling Technologies
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Soil and Water Nutrient Dynamics
- Seismic Performance and Analysis
- Supercapacitor Materials and Fabrication
- Advanced Fiber Optic Sensors
- Structural Analysis and Optimization
University of Auckland
2016-2025
Tsinghua University
2011-2025
Shanghai First People's Hospital
2024-2025
Guangdong Testing Institute for Product Quality Supervision
2023-2025
University of Chinese Academy of Sciences
2025
Southeast University
2025
Nanjing Forestry University
2025
Heilongjiang Earthquake Agency
2024
China Southern Power Grid (China)
2024
Northwestern Polytechnical University
2018-2023
The dramatic reduction in power consumption of current integrated circuits has evoked great research interests harvesting ambient energy, such as vibrations, a potential supply for electronic devices to avoid battery replacement. Currently, most vibration-based energy harvesters are designed linear resonators achieve optimal performance by matching their resonance frequencies with the excitation priori. However, slight shift frequency will cause performance. Unfortunately, vast majority...
This letter presents a comparative study of different tip cross-sections for small scale wind energy harvesting based on galloping phenomenon. A prototype device is fabricated with piezoelectric cantilever and body various cross-section profiles (square, rectangle, triangle, D-shape) tested in tunnel. Experimental results demonstrate the superiority square-sectioned low cut-in speed 2.5 m/s high peak power 8.4 mW. An analytical model established verified by experimental results. It...
This letter proposes a magnetic coupled piezoelectric energy harvester (PEH), in which the interaction is introduced by oscillator. For comparison purpose, lumped parameter models are established for conventional linear PEH, nonlinear PEH with fixed magnet, and proposed Both experiment simulation show benefits from dynamics of In experiment, nearly 100% increase operating bandwidth 41% magnitude power output achieved at an excitation level 2 m/s2.
Last decade has seen growing research interest in vibration energy harvesting using piezoelectric materials. When developing systems, it is advantageous to establish certain analytical or numerical model predict the system performance. In last few years, researchers from mechanical engineering established distributed models for harvester but simplified circuit derivation. While, electrical concerned modeling of practical tended simplify structural and conditions. The challenges accurate such...
The naturally microstructure-bioinspired piezoresistive sensor for human–machine interaction and human health monitoring represents an attractive opportunity wearable bioelectronics. However, due to the trade-off between sensitivity linear detection range, obtaining sensors with both a wide pressure range high is still great challenge. Herein, we design hierarchically flexible consisting of hierarchical polyaniline/polyvinylidene fluoride nanofiber (HPPNF) film sandwiched two interlocking...
Energy harvesting from ambient vibrations using piezoelectric effect is a promising alternative solution for powering small electronics such as wireless sensors. A conventional energy harvester usually consists of cantilevered beam with proof mass at its free end. For device, the second resonance ignored because high frequency well low response level compared to first resonance. Hence, only mode has been frequently exploited in reported literature. In this article, novel compact two...
In recent years, several strategies have been proposed to improve the functionality of energy harvesters under broadband vibrations, but they only efficiency harvesting limited conditions. this work, a comprehensive experimental study is conducted investigate use magnets for improving various vibration scenarios. First, nonlinearities introduced by are exploited performance harvesting. Both monostable and bistable configurations investigated sinusoidal random vibrations with excitation...
This paper presents an electret-based MEMS energy harvester synergizing the advantages of multi-modal structure and impact mechanism for broad operating bandwidth. The device with a volume 295 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> comprises primary subsystem power generation electrode-free auxiliary frequency tuning. tiny helps to induce close resonances comparable outputs at low excitations, as well introduces impact-based...
Flexible, compact, lightweight and sustainable power sources are indispensable for modern wearable personal electronics small-unmanned aerial vehicles (UAVs). Hierarchical honeycomb has the unique merits of compact mesostructures, excellent energy absorption properties considerable weight to strength ratios. Herein, a honeycomb-inspired triboelectric nanogenerator (h-TENG) is proposed biomechanical UAV morphing wing harvesting based on contact triboelectrification wavy surface cellular...
Harvesting flow energy by exploiting transverse galloping of a bluff body attached to piezoelectric cantilever is prospective method power wireless sensing systems. In order better understand the electroaeroelastic behavior and further improve harvester (GPEH), an effective analytical model required, which needs incorporate both electromechanical coupling aerodynamic force. Available models for GPEH include lumped parameter single-degree-of-freedom (SDOF) model, approximated distributed...
Vibration energy harvesting using piezoelectric material has received great research interest in the recent years. One important concern for development of is to broaden operating bandwidth. Various techniques have been proposed broadband harvesting, such as resonance tuning approach, frequency up-conversion technique, multi-modal and nonlinear technique. A recently reported linear 2-degree-of-freedom harvester can achieve two close resonant frequencies both with significant power outputs,...
Conventional vibration energy harvesters have been usually studied as single-degree-of-freedom models. The fact that such are only efficient near sole resonance limits their applicability in frequency-variant or random scenarios. In this article, a novel multiple-degree-of-freedom piezoelectric harvesting model is presented. First, two-degree-of-freedom analyzed, and its two configurations characterized. the first configuration, element placed between one mass base, second it masses. It...
The decreasing energy consumption of today's portable electronics has invoked the possibility harvesting from ambient environment for self-power supply. One common and simple method vibration is to utilize direct piezoelectric effect. Compared traditional materials such as lead zirconate titanate (PZT), macro-fiber composites (MFC) are characterized by their flexibility on large deformation. However, generated MFC still far smaller than that required at present. In this paper, a system...