The realization of the liquid metal heartbeat effect shows better controllability under non-periodic stimuli than spontaneous oscillation or periodic stimuli. However, adjusting the liquid metal heartbeat performance, drop spreading area, and frequency, solely by the magnitude of the voltage, has great limitations. Here, we demonstrate that the eGaIn drop can beat inside graphite ring electrodes under DC voltage in alkaline solutions on ratchet substrates. These sawtooth structures provide asymmetric textures which influence liquid metal deformation during the beating of the heart. We achieved heartbeat frequencies from 2.7 to 4.8 Hz, a 100% increase in the tunable frequency range compared to that on a flat surface. The oxidative spreading of the eGaIn drop on the ratchet substrate shows that the drop penetrates into the grooves of the sawtooth structure. Moreover, we investigated the physical mechanisms affecting the eGaIn heartbeat frequency and the influence on the spreading area of the eGaIn drop at various sawtooth sizes and orientations. These findings not only enhance our understanding of droplet manipulation on sawtooth-structured surfaces but also facilitate the design of microfluidic pump systems.
机构:
Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
Shenzhen Univ, Inst Microscale Optoelect, Nanophoton Res Ctr, Shenzhen 518060, Peoples R China
Shenzhen Univ, State Key Lab Radio Frequency Heterogeneous Integr, Shenzhen 518060, Peoples R ChinaShenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
Wu, Xiuru
Fang, Hui
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Shenzhen Univ, Inst Microscale Optoelect, Nanophoton Res Ctr, Shenzhen 518060, Peoples R China
Shenzhen Univ, State Key Lab Radio Frequency Heterogeneous Integr, Shenzhen 518060, Peoples R ChinaShenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
Fang, Hui
Ma, Xing
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机构:
Harbin Inst Technol Shenzhen, Sauvage Lab Smart Mat, Shenzhen 518055, Guangdong, Peoples R ChinaShenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
Ma, Xing
Yan, Sheng
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Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518060, Peoples R ChinaShenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
机构:
Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Cui, Yafei
Guo, Jie
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Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Shandong Lab Adv Mat & Green Mfg Yantai, Yantai 264000, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Guo, Jie
Cheng, Jun
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Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
Shandong Lab Adv Mat & Green Mfg Yantai, Yantai 264000, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Cheng, Jun
Geng, Yushan
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Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Geng, Yushan
Tan, Hui
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Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Tan, Hui
Zhu, Shengyu
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Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Zhu, Shengyu
Yang, Jun
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机构:
Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
Shandong Lab Adv Mat & Green Mfg Yantai, Yantai 264000, Peoples R ChinaChinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
机构:
College of Materials Science and Engineering, Guilin University of Technology, GuilinCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Geng J.
Lan J.
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机构:
College of Materials Science and Engineering, Guilin University of Technology, GuilinCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Lan J.
Liu T.
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机构:
School of Materials Science and Engineering, Changzhou University, ChangzhouCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Liu T.
Zhuge X.
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School of Materials Science and Engineering, Changzhou University, ChangzhouCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Zhuge X.
Luo Z.
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机构:
College of Materials Science and Engineering, Guilin University of Technology, GuilinCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Luo Z.
Li Y.
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机构:
College of Materials Science and Engineering, Guilin University of Technology, GuilinCollege of Materials Science and Engineering, Guilin University of Technology, Guilin
Li Y.
Luo K.
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机构:
College of Materials Science and Engineering, Guilin University of Technology, Guilin
School of Materials Science and Engineering, Changzhou University, ChangzhouCollege of Materials Science and Engineering, Guilin University of Technology, Guilin