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Front. Inform. Technol. Electron. Eng.  2013, Vol. 14 Issue (4): 283-287    DOI: 10.1631/jzus.C12MNT08
    
Resin-bonded NdFeB micromagnets for integration into electromagnetic vibration energy harvesters
Pei-hong Wang, Kai Tao, Zhuo-qing Yang, Gui-fu Ding
School of Physics and Material Science, Anhui University, Hefei 230039, China; Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
Resin-bonded NdFeB micromagnets for integration into electromagnetic vibration energy harvesters
Pei-hong Wang, Kai Tao, Zhuo-qing Yang, Gui-fu Ding
School of Physics and Material Science, Anhui University, Hefei 230039, China; Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
 全文: PDF 
摘要： A micromachining technique is presented for the fabrication of resin-bonded permanent magnets in the microscale. Magnetic paste is prepared from NdFeB powder and an epoxy resin, filled into lithographically defined photoresist molds or metal molds, and formed into resin-bonded magnets after curing at room temperature. A coercivity of 772.4 kA/m, a remanence of 0.27 T, and a maximum energy product of 22.6 kJ/m3 have been achieved in an NdFeB disk micromagnet with dimensions of Ф200 μm×70 μm. Based on the developed micro-patterning of resin-bonded magnets, a fully integrated electromagnetic vibration energy harvester has been designed and fabricated. The dimensions of the energy harvester are only 4.5 mm×4.5 mm×1.0 mm, and those of the micromagnet are 1.5 mm×1.5 mm×0.2 mm. This microfabrication technique can be used for producing permanent magnets tens or hundreds of micrometers in size for use in various magnetic devices.
关键词： NdFeB;  Micromagnet;  Resin-bonded;  Electromagnetic vibration energy harvester    
Abstract: A micromachining technique is presented for the fabrication of resin-bonded permanent magnets in the microscale. Magnetic paste is prepared from NdFeB powder and an epoxy resin, filled into lithographically defined photoresist molds or metal molds, and formed into resin-bonded magnets after curing at room temperature. A coercivity of 772.4 kA/m, a remanence of 0.27 T, and a maximum energy product of 22.6 kJ/m3 have been achieved in an NdFeB disk micromagnet with dimensions of Ф200 μm×70 μm. Based on the developed micro-patterning of resin-bonded magnets, a fully integrated electromagnetic vibration energy harvester has been designed and fabricated. The dimensions of the energy harvester are only 4.5 mm×4.5 mm×1.0 mm, and those of the micromagnet are 1.5 mm×1.5 mm×0.2 mm. This microfabrication technique can be used for producing permanent magnets tens or hundreds of micrometers in size for use in various magnetic devices.
Key words: NdFeB    Micromagnet    Resin-bonded    Electromagnetic vibration energy harvester
收稿日期: 2012-09-10 出版日期: 2013-04-03
CLC:  TM27  
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Pei-hong Wang
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Gui-fu Ding

引用本文:

Pei-hong Wang, Kai Tao, Zhuo-qing Yang, Gui-fu Ding. Resin-bonded NdFeB micromagnets for integration into electromagnetic vibration energy harvesters. Front. Inform. Technol. Electron. Eng., 2013, 14(4): 283-287.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C12MNT08    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2013/V14/I4/283

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