Screen-printed piezoelectric shoe-insole energy harvester using an improved flexible PZT-polymer composites

Abstract

Screen-printed piezoelectric shoe-insole energy harvester using an improved flexible PZT-polymer composites Abstract. This paper reports improved screen-printed piezoelectric composites that can be printed on fabrics or flexible substrates. The materials are flexible and are processed at lower temperature (130°C). One main PZT particle size (2µm) was mixed separately with smaller piezoelectric particles (0.1, 0.3 and 0.8µm) with different weight ratios to investigate the piezoelectric property d 33 . The blended PZT powder was then mixed with 40% polymer binder and printed on Alumina substrates. The applied poling field, temperature and time were 8MV/m, 160°C and 10min, respectively. The optimum material gives a d 33 of 36pC/N with particle sizes of 2µm and 0.8µm and mixed percentages of 82% and 18%, respectively. A screen-printed piezoelectric shoe-insoles (PSI) has been developed as a self-powered force mapping sensor. The PSI was simulated, fabricated and tested. ANSYS results show that one element of PSI sole can produce an open-circuit voltage of 3V when a human of average weight of 70kg makes a gait strike. Experimental results show that one element produced 2V which is less than the simulated results because of the reduction of poling field for the practical device.

Development of a low temperature PZT/polymer paste for screen printed flexible electronics applications

“…The composite shows great flexibility to be printed on flexible mediums such as fabrics. The composite show greater piezoelectric and dielectric properties compared to our previous work [5,6]. These properties are explored and discussed in this paper.…”

Concurrent Plantar Stress Sensing and Energy Harvesting Technique by Piezoelectric Insole Device and Rectifying Circuitry for Gait Monitoring in the Internet of Health Things

“…In [23], we learn that with a piezoelectric insole, a complete walking event (step tread and release) results in positive and negative voltage components. In this work, the positive amplitude indicates the tread action, based on the direction of the dipole.…”

“…In this work, the positive amplitude indicates the tread action, based on the direction of the dipole. According to human walking behavior, the velocity of contacting with the ground is normally faster than its counterpart [23]. Hence, the absolute amplitude of stepping is higher compared to that of releasing.…”

Improving Energy Conservation in Wireless Sensor Network Using Energy Harvesting System

“…In fact, several urban environments, like highways railways, bridges and human bodies are focused on vibrations. To provide power to sensor nodes from these environmental vibrations, several researchers have built efficiently and tested many models based on piezoelectric resources [22].…”