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An optimized Cu-Ni nanocomposite coil for low-power electromagnetic microspeaker fabrication

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4 Author(s)
Chen, Y.C. ; Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Wei-Ting Liu ; Tzu-Yuan Chao ; Cheng, Y.T.

This paper presents an optimized Cu-Ni nanocomposite coil synthesized based on the trade-off of resistivity and permeability of the nanocomposite for low-power electromagnetic microspeaker fabrication. A 200 mum wide composite coil plated in an alkaline noncyanide copper based bath that is added with 2 g/L of Ni nanopowders can realize ~40% power saving of the speaker performed in a frequency range of 1 to 6 kHz as compared with the coil made of pure Cu for the same speaker design.

Published in:

Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International

Date of Conference:

21-25 June 2009