ارزیابی اثر مقاومت الکتریکی خارجی بر کارایی تیر کامپوزیتی برداشت‌کننده انرژی ارتعاشی با لایه فیلم نانوپیزوالکتریک سلولزی

Currently, vibration energy harvesting with piezoelectric material can produce more than 300 microwatts per square centimeter of power, and this has made this method one of the suitable energy harvesting methods for powering low-power electronic devices. The use of new materials and technology in the construction of energy harvesters can solve the problems in the current structures to a great extent. In this work, with the help of EAPap piezopolymer materials, which are a thin film of cellulose, energy-harvesting energy-harvesting beams were made and then divided into smaller beams with the same width. Then, by changing the external electrical resistance, its effect on the output voltage and current has been investigated. It can be seen that with the increase of the external electrical resistance, the output voltage has increased and the current has decreased. Also, by calculating the effect of these two parameters on the output power in a range, the optimal resistance has been selected.