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Proceeding Paper

Hi-Fi Stake Single Crystal Actuators and New Developments †

Microfine Materials Technologies Pte Ltd., 10 Bukit Batok Crescent, #06-02 The Spire, Singapore 658079, Singapore
Author to whom correspondence should be addressed.
Presented at the First International Electronic Conference on Actuator Technology: Materials, Devices and Applications, 23–27 November 2020; Available online:
Proceedings 2020, 64(1), 27;
Published: 21 November 2020
“Hi-Fi Stake” piezoelectric actuators are constructed by bonding [011]-poled d32-mode lead-based relaxor-PT single crystals with polycarbonate edge guides into a square-pipe structure. They contract under positive-polarity applied voltage due to d32 values being negative for [011]-poled relaxor-PT single crystals. Under quasi-static loading conditions, Hi-Fi Stake single crystal actuators exhibit highly linear displacement response with negligible hysteresis. Over the years, we have successfully developed the following three versions of Hi-Fi Stake (HFS) actuators: cost-effective (CE), large-stroke (LS) and high-load (HL), all of maximum use temperature of up to 60 °C. Of which, the LS version, of 2-level construction, displays strokes of up to 50 μm @ 240 V and the HL version, of 2-layer construction, has maximum loads allowed of 14 kg-f at room temperature and 7 kg-f at 60 °C. Additionally described in this work are the developments of Cryogenic Hi-Fi Stakes (CG-HFS) and High-Temperature Hi-Fi Stake (HT-HFS) actuators. The selection of suitable crystal compositions, recommended working conditions and measured performance of fabricated prototypes of these two new versions of Hi-Fi Stakes are presented and discussed. View Full-Text
Keywords: linear and hysteresis-free strain; stroke; working load; cryogenic; high temperature linear and hysteresis-free strain; stroke; working load; cryogenic; high temperature
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MDPI and ACS Style

Lim, F.-C.; Lin, D.-H.; Xia, Y.; Koh, J.-H.; Lim, L.-C. Hi-Fi Stake Single Crystal Actuators and New Developments. Proceedings 2020, 64, 27.

AMA Style

Lim F-C, Lin D-H, Xia Y, Koh J-H, Lim L-C. Hi-Fi Stake Single Crystal Actuators and New Developments. Proceedings. 2020; 64(1):27.

Chicago/Turabian Style

Lim, Fang-Chih, Dian-Hua Lin, Yuexue Xia, Jia-Hao Koh, and Leong-Chew Lim. 2020. "Hi-Fi Stake Single Crystal Actuators and New Developments" Proceedings 64, no. 1: 27.

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