scholarly journals Self-powered Wireless Occupancy Detector based on Flexible Piezoelectric Film

2019 ◽  
Author(s):  
Sherif Keddis ◽  
Rafik Mitry ◽  
Norbert Schwesinger
Keyword(s):  
Piezoelectric Film ◽  
Self Powered

scholarly journals Dual-Structured Flexible Piezoelectric Film Energy Harvesters for Effectively Integrated Performance

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1444 ◽  
Author(s):  
Jae Han ◽  
Kwi-Il Park ◽  
Chang Jeong
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
High Efficiency ◽  
Piezoelectric Film ◽  
Efficient Technology ◽  
Element Analysis ◽  
Energy Harvesters ◽  
Self Powered ◽  
Lift Off ◽  
Integrated Performance

Improvement of energy harvesting performance from flexible thin film-based energy harvesters is essential to accomplish future self-powered electronics and sensor systems. In particular, the integration of harvesting signals should be established as a single device configuration without complicated device connections or expensive methodologies. In this research, we study the dual-film structures of the flexible PZT film energy harvester experimentally and theoretically to propose an effective principle for integrating energy harvesting signals. Laser lift-off (LLO) processes are used for fabrication because this is known as the most efficient technology for flexible high-performance energy harvesters. We develop two different device structures using the multistep LLO: a stacked structure and a double-faced (bimorph) structure. Although both structures are well demonstrated without serious material degradation, the stacked structure is not efficient for energy harvesting due to the ineffectively applied strain to the piezoelectric film in bending. This phenomenon stems from differences in position of mechanical neutral planes, which is investigated by finite element analysis and calculation. Finally, effectively integrated performance is achieved by a bimorph dual-film-structured flexible energy harvester. Our study will foster the development of various structures in flexible energy harvesters towards self-powered sensor applications with high efficiency.

Flexible, Hybrid Piezoelectric Film (BaTi(1–x)ZrxO3)/PVDF Nanogenerator as a Self-Powered Fluid Velocity Sensor

2015 ◽  
Vol 7 (18) ◽  
pp. 9831-9840 ◽  
Author(s):  
Nagamalleswara Rao Alluri ◽  
Balasubramaniam Saravanakumar ◽  
Sang-Jae Kim
Keyword(s):  
Fluid Velocity ◽  
Piezoelectric Film ◽  
Velocity Sensor ◽  
Self Powered

Self-powered ultraviolet–visible–near infrared perovskite/silicon hybrid photodetectors based on a novel Si/SnO2/MAPbI3/MoO3 heterostructure

2020 ◽  
Vol 13 (12) ◽  
pp. 121001
Author(s):  
Wei Qu ◽  
Shukun Weng ◽  
Liping Zhang ◽  
Min Sun ◽  
Bo Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Self Powered

Development of a Self-Powered Food Sanitation Center

2002 ◽  
Author(s):  
Brady Krass ◽  
Charles Hannon ◽  
Joseph Gerstmann
Keyword(s):  
Self Powered ◽  
Food Sanitation

Interface Engineering To Boost Photoresponse Performance of Self-Powered, Broad-Bandwidth PEDOT:PSS/Si Heterojunction Photodetector

2016 ◽  
Vol 8 (29) ◽  
pp. 19158-19167 ◽  
Author(s):  
Zhimin Liang ◽  
Pingyang Zeng ◽  
Pengyi Liu ◽  
Chuanxi Zhao ◽  
Weiguang Xie ◽  
...  
Keyword(s):  
Interface Engineering ◽  
Broad Bandwidth ◽  
Self Powered

Elliptic paraboloid-based solar spectrum splitters for self-powered photobioreactors

2021 ◽  
Vol 163 ◽  
pp. 1773-1785
Author(s):  
Nima Talebzadeh ◽  
Mohsen Rostami ◽  
Paul G. O’Brien
Keyword(s):  
Solar Spectrum ◽  
Elliptic Paraboloid ◽  
Self Powered

Determination of Charge Coefficient of Piezoelectric Films Using a Combined Finite Element Model and Dynamic Loading Technique

2020 ◽  
Vol 835 ◽  
pp. 229-242
Author(s):  
Oboso P. Bernard ◽  
Nagih M. Shaalan ◽  
Mohab Hossam ◽  
Mohsen A. Hassan
Keyword(s):  
Finite Element ◽  
Dynamic Loading ◽  
Material Properties ◽  
Accurate Determination ◽  
Substrate Material ◽  
Experimental Results ◽  
Piezoelectric Composite ◽  
Piezoelectric Film ◽  
Piezoelectric Charge

Accurate determination of piezoelectric properties such as piezoelectric charge coefficients (d33) is an essential step in the design process of sensors and actuators using piezoelectric effect. In this study, a cost-effective and accurate method based on dynamic loading technique was proposed to determine the piezoelectric charge coefficient d33. Finite element analysis (FEA) model was developed in order to estimate d33 and validate the obtained values with experimental results. The experiment was conducted on a piezoelectric disc with a known d33 value. The effect of measuring boundary conditions, substrate material properties and specimen geometry on measured d33 value were conducted. The experimental results reveal that the determined d33 coefficient by this technique is accurate as it falls within the manufactures tolerance specifications of PZT-5A piezoelectric film d33. Further, obtained simulation results on fibre reinforced and particle reinforced piezoelectric composite were found to be similar to those that have been obtained using more advanced techniques. FE-results showed that the measured d33 coefficients depend on measuring boundary condition, piezoelectric film thickness, and substrate material properties. This method was proved to be suitable for determination of d33 coefficient effectively for piezoelectric samples of any arbitrary geometry without compromising on the accuracy of measured d33.

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