This paper presents a new wireless powering technique for microsystems based on low frequency (<100Hz) excitation of a piezoelectric- magnetostrictive laminate (i.e., magnetoelectric effect). The laminate composites subjected to a magnetic field have been used to generate an electric voltage (up to 285V). Adequate power levels (10-80μW) for many microsystem applications have been generated by inserting a piezoelectric PZT sheet between two highly magnetostrictive Terbium Dysprosium Iron alloy (Terfenol-D) layers (strains of the order of 10-3 at 2-3kG). Comparing with other remote powering techniques, this method possesses much higher voltage generation efficiency per generator volume.
|Original language||English (US)|
|Number of pages||6|
|Journal||Sensors and Actuators, A: Physical|
|State||Published - Sep 1 2004|
|Event||Selected Papers from Transducers 03 - Boston, MA, United States|
Duration: Jun 8 2003 → Jun 12 2003
Copyright 2008 Elsevier B.V., All rights reserved.
- Laminate composites
- Magnetoelectric effect
- Power generators