Development of multi-ferroic actuator/sensor material and device for intelligent/smart technology
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概要
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Two types of multi-ferroic actuator/sensor devices. i.e. (1) magnetically driven composite actuator and (2) multi-functional surface acoustic wave (SAW) sensor by MEMS are presented for intelligent/smart technologies. The large-scale robust composite actuator (1) is designed to combining the ferromagnetic property with superelasticity of shape memory alloy (SMA) because it can be driven with high speed as well as considerably large strain by applying a wireless magnetic field. The composite is reinforced by the superelastic fiber or lamellar of shape memory alloys (TiNi, CuAlMn) in the ferromagnetic metal(Ni, Fe) matrix. Secondarily, multi-functionally designed, multi-ferroic senor device of surface acoustic wave (SAW) is introduced. Piezoelectric LiNbO3(x-y cut) base materials are used. IDT has been produced by lithography. On the surface part between IDTs, environmentally active material films such as SMA, FSMA, magnetostrictive alloy etc. are formed by magnetron-sputtering. These results show the possibility of a new type of multi-functional composite actuator and sensor based on multi-ferroic effect.
- Society of Advanced Scienceの論文
Society of Advanced Science | 論文
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