A flexible electromagnetic micro power generator with ferromagnetic fluid in micro channels

• Main Authors: Sue, Bo-Ching, 蘇柏青
• Other Authors: Chiu, Yi
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/04113394616949566839

碩士 === 國立交通大學 === 電控工程研究所 === 102 === Energy harvesting has a very important position in the academy field for over ten years. Earlier devices are fabricated on rigid substrates. Nowadays, this field focuses on fabricating micro-power generators on flexible substrates. In this thesis, we use PDMS to fabricate device and bond PDMS to form an enclosed cavity. Then, we inject ferro-fluid and silicon oil in the cavity. When the device is pressed, the two fluids will flow back and forth. Because of the permeability difference between the two fluids, the magnetic flux will change with time in the device, making it possible to harvest energy from this phenomenon. This method is different from the traditional vibrational electromagnetic energy harvesters. Because fluid is mobile, it is possible to make a flexible energy harvester with micro fluid in it. Design, theory, fabrication process, measurement results and improvements are discussed in this thesis. The maximum output power of device is 60.9pW when the pressing displacement is 0.9mm and pressing frequency is 20Hz.