Hi-Fi Stake Piezo Single Crystal Actuator
AbstractHigh fidelity (Hi-Fi) piezoelectric single crystal stake actuators are presented in this work. They are made of multiple rectangular d32 mode lead-based relaxor ferroelectric (notably Pb(Zn1/3Nb2/3)O3-PbTiO3 (PZN-PT) and Pb(In0.5Nb0.5)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT)) single crystals bonded along their long edges with the aid of compliant polymeric edge guides into a square or polygonal pipe-like construction. Due to the highly stable engineered domain structure and high piezoelectricity of single crystal active materials, the actuators exhibit large linear displacement responses with negligible (<1%) hysteresis. Prototypes of square-pipe stake actuators were first fabricated and their phase transformation curves under different applied voltages, axial compressive loads and temperatures were established. Based on the information obtained, a range of Hi-Fi stake actuators with external square cross-sections of 5 × 5 mm2, 7.5 × 7.5 mm2 and 10 × 10 mm2, each of 4 different overall lengths of 15, 28, 41 and 54 mm, were further designed and fabricated using either PZN-PT or PIN-PMN-PT single crystals (both with TRO ≈ 110–125 °C) of 0.4 mm in crystal thickness. The stroke for the longest stake actuator fabricated (L = 54 mm) reaches −58 µm at 240 V. The working conditions, over which these Hi-Fi stake actuators remain linear with negligible hysteresis, were established for a total load of up to 10 kg and use temperature of up to 40 °C. View Full-Text
Share & Cite This Article
Huang, Y.; Zhang, S.; Wang, P.; Xia, Y.X.; Lin, D.H.; Yao, K.; Lim, L.-C. Hi-Fi Stake Piezo Single Crystal Actuator. Actuators 2018, 7, 60.
Huang Y, Zhang S, Wang P, Xia YX, Lin DH, Yao K, Lim L-C. Hi-Fi Stake Piezo Single Crystal Actuator. Actuators. 2018; 7(3):60.Chicago/Turabian Style
Huang, Yu; Zhang, Shuangjie; Wang, Penghui; Xia, Yue X.; Lin, Dian H.; Yao, Kui; Lim, Leong-Chew. 2018. "Hi-Fi Stake Piezo Single Crystal Actuator." Actuators 7, no. 3: 60.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.