A robust, low-voltage driven millirobot based on transparent ferroelectric crystals

Xiangyu Gao; Liao Qiao; Chaorui Qiu; Ting Wang; Lin Zhang; Jinfeng Liu; Shuai Yang; Haonan Jin H.; Benjian Xin; Shujun Zhang; Shuxiang Dong; Zhuo Xu; Fei Li

doi:10.1063/5.0079737

A robust, low-voltage driven millirobot based on transparent ferroelectric crystals

Xiangyu Gao
, Liao Qiao
, Chaorui Qiu
, Ting Wang
, Lin Zhang^*
, Jinfeng Liu
, Shuai Yang
, Haonan Jin H.
, Benjian Xin
, Shujun Zhang
, Shuxiang Dong
, Zhuo Xu
, Fei Li^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

Abstract

Low driving voltage is important for miniaturization and untethered service of millirobots made of piezoelectric materials. In this research, we designed a bio-inspired bimorph-structured millirobot with a transparent relaxor ferroelectric crystal. Due to the ultrahigh piezoelectricity of the relaxor ferroelectric crystals and the optimized bimorph-based structure, the millirobot shows a maximum moving speed up to 9.22 b s^-1 (body length per second) at 100 V, while the minimum driving voltage for initial movement can be as low as 3V, which is more than two orders of magnitude smaller than that of millirobot based on dielectric elastomers. The maximum and minimum power consumptions of the millirobot are 71.6 mW and 85.9 μW, respectively. The robustness of the millirobot is reflected in its mechanical load stability carrying a 78 g mass (97.5 times of its weight) and its cryogenic tolerance. This work is believed to be beneficial to the design of various robust electromechanical devices with low driving voltage. © 2022 AVS Science and Technology Society. All rights reserved.

Original language	English
Article number	032902
Journal	Applied Physics Letters
Volume	120
Issue number	3
DOIs	https://doi.org/10.1063/5.0079737
Publication status	Published - 17 Jan 2022
Externally published	Yes

Funding

We thank Zeyang Mou from the School of Aerospace Engineering, Xi’an Jiaotong University for help in high-speed video test. This work was supported by the National Natural Science Foundation of China (Grant Nos. 52002312, 51922083, and 51972263), the China Postdoctoral Science Foundation (Grant No. 2019M663720), the Fundamental Research Funds for the Central Universities (Grant Nos. xzy012020005, xxj022019034, xpt012020025, and xhj032021003-01), the development programme of Shaanxi province (Grant No. 2019ZDLGY04-09), and the 111 Project (No. B14040).

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title = "A robust, low-voltage driven millirobot based on transparent ferroelectric crystals",

abstract = "Low driving voltage is important for miniaturization and untethered service of millirobots made of piezoelectric materials. In this research, we designed a bio-inspired bimorph-structured millirobot with a transparent relaxor ferroelectric crystal. Due to the ultrahigh piezoelectricity of the relaxor ferroelectric crystals and the optimized bimorph-based structure, the millirobot shows a maximum moving speed up to 9.22 b s-1 (body length per second) at 100 V, while the minimum driving voltage for initial movement can be as low as 3V, which is more than two orders of magnitude smaller than that of millirobot based on dielectric elastomers. The maximum and minimum power consumptions of the millirobot are 71.6 mW and 85.9 μW, respectively. The robustness of the millirobot is reflected in its mechanical load stability carrying a 78 g mass (97.5 times of its weight) and its cryogenic tolerance. This work is believed to be beneficial to the design of various robust electromechanical devices with low driving voltage. {\textcopyright} 2022 AVS Science and Technology Society. All rights reserved.",

author = "Xiangyu Gao and Liao Qiao and Chaorui Qiu and Ting Wang and Lin Zhang and Jinfeng Liu and Shuai Yang and \{Jin H.\}, Haonan and Benjian Xin and Shujun Zhang and Shuxiang Dong and Zhuo Xu and Fei Li",

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T1 - A robust, low-voltage driven millirobot based on transparent ferroelectric crystals

AU - Gao, Xiangyu

AU - Qiao, Liao

AU - Qiu, Chaorui

AU - Wang, Ting

AU - Zhang, Lin

AU - Liu, Jinfeng

AU - Yang, Shuai

AU - Jin H., Haonan

AU - Xin, Benjian

AU - Zhang, Shujun

AU - Dong, Shuxiang

AU - Xu, Zhuo

AU - Li, Fei

PY - 2022/1/17

Y1 - 2022/1/17

N2 - Low driving voltage is important for miniaturization and untethered service of millirobots made of piezoelectric materials. In this research, we designed a bio-inspired bimorph-structured millirobot with a transparent relaxor ferroelectric crystal. Due to the ultrahigh piezoelectricity of the relaxor ferroelectric crystals and the optimized bimorph-based structure, the millirobot shows a maximum moving speed up to 9.22 b s-1 (body length per second) at 100 V, while the minimum driving voltage for initial movement can be as low as 3V, which is more than two orders of magnitude smaller than that of millirobot based on dielectric elastomers. The maximum and minimum power consumptions of the millirobot are 71.6 mW and 85.9 μW, respectively. The robustness of the millirobot is reflected in its mechanical load stability carrying a 78 g mass (97.5 times of its weight) and its cryogenic tolerance. This work is believed to be beneficial to the design of various robust electromechanical devices with low driving voltage. © 2022 AVS Science and Technology Society. All rights reserved.

AB - Low driving voltage is important for miniaturization and untethered service of millirobots made of piezoelectric materials. In this research, we designed a bio-inspired bimorph-structured millirobot with a transparent relaxor ferroelectric crystal. Due to the ultrahigh piezoelectricity of the relaxor ferroelectric crystals and the optimized bimorph-based structure, the millirobot shows a maximum moving speed up to 9.22 b s-1 (body length per second) at 100 V, while the minimum driving voltage for initial movement can be as low as 3V, which is more than two orders of magnitude smaller than that of millirobot based on dielectric elastomers. The maximum and minimum power consumptions of the millirobot are 71.6 mW and 85.9 μW, respectively. The robustness of the millirobot is reflected in its mechanical load stability carrying a 78 g mass (97.5 times of its weight) and its cryogenic tolerance. This work is believed to be beneficial to the design of various robust electromechanical devices with low driving voltage. © 2022 AVS Science and Technology Society. All rights reserved.

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UR - https://www.scopus.com/pages/publications/85123985882#tab=impact

U2 - 10.1063/5.0079737

DO - 10.1063/5.0079737

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 120

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032902

ER -

A robust, low-voltage driven millirobot based on transparent ferroelectric crystals

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