A large-displacement 65Pb(Mg1/3Nb2/3)O3–35PbTiO3/Pt bimorph actuator prepared by screen printing
2008; Elsevier BV; Volume: 133; Issue: 2 Linguagem: Inglês
10.1016/j.snb.2008.04.004
ISSN1873-3077
AutoresHana Uršič, Marko Hrovat, Janez Holc, Marina Santo Zarnik, Silvo Drnovšek, S. Maček, Marija Kosec,
Tópico(s)Acoustic Wave Resonator Technologies
ResumoIn this paper we present a novel approach to preparing large-displacement 65Pb(Mg1/3Nb2/3)O3–35PbTiO3/Pt (65/35 PMN–PT/Pt) bimorph actuators. These "substrate-free", bending-type actuators were prepared by screen-printing the 65/35 PMN–PT and Pt thick-film pastes as the electrodes on alumina substrates. After this screen printing and the subsequent firing the 65/35 PMN–PT/Pt composites were peeled off from the substrates. Displacements of nearly 100 μm at 18 V were achieved for actuators with dimensions of 1.8 cm × 2.5 mm × 50 μm for the 65/35 PMN–PT layer. The normalized displacement (the displacement per unit length) was 40 μm/cm at 18 V. The experimental results together with a computation procedure were used to obtain the material parameters for a finite-element analysis of the 65/35 PMN–PT/Pt bimorph actuators.
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