1. China Electric Power Research Institute, Beijing 100192, China 2. Vehicle Engineering, College of Engineering, China Agricultural University, Beijing 100083, China; Tianjin Microfluidic Technology Co., Ltd., Tianjin 300457, China
This paper reported a study on a flexible liquid metal coil (LMC) for electromagnetic collection from the transmission line for self-powered sensor and electromagnetic generation for wireless charging of cellular telephone. The room temperature liquid metal of Galinstan was perfused to elastic silicone tube, which is then terminated with gallium-plated copper wire. The as-prepared liquid metal wire can sustain stretching, twisting, and bending with large deformation, and has a good electrical contact stability with the external circuit. The LMC based magnetic energy harvester was then designed and demonstrated to collect the magnetic field energy induced by a wire carrying alternating current. The power of 260 mW was obtained for the wire carrying current of 10 A. The flexible toroidal inductor was fabricated and tested for magnetic energy harvesting. The flexible spiral-shaped LMC was also designed and demonstrated to power cellular telephone through wireless charging. The present study opens the way for further applications of elastic LMC in electromagnetic energy harvesting and charging.
Y Zheng, Z Z He, J Yang, J Liu. Personal electronics printing via tapping mode composite liquid metal ink delivery and adhesion mechanism. Scientific Reports, 2014: 4588 https://doi.org/10.1038/srep04588
2
Q Wang, Y Yu, J Yang, J Liu. Fast fabrication of flexible functional circuits based on liquid metal dual-trans printing. Advanced Materials, 2015, 27(44): 7109–7116 https://doi.org/10.1002/adma.201502200
3
S Cheng, Z G Wu. Microfluidic stretchable RF electronics. Lab on a Chip, 2010, 10(23): 3227–3234 https://doi.org/10.1039/c005159d
4
M Gao, L Gui. A handy liquid metal based electroosmotic flow pump. Lab on a Chip, 2014, 14(11): 1866–1872 https://doi.org/10.1039/C4LC00111G
5
S Y Tang, K Khoshmanesh, V Sivan, P Petersen, A P O’Mullane, D Abbott, A Mitchell, K Kalantar-zadeh. Liquid metal enabled pump. Proceedings of the National Academy of Sciences of the United States of America, 2014, 111(9): 3304–3309 https://doi.org/10.1073/pnas.1319878111
6
J Y Zhu, S Y Tang, K Khoshmanesh, K Ghorbani. An integrated liquid cooling system based on Galinstan liquid metal droplets. ACS Applied Materials and Interfaces, 2016, 8(3): 2173–2180 https://doi.org/10.1021/acsami.5b10769
7
X H Yang, J Liu. Liquid metal enabled combinatorial heat transfer science: toward unconventional extreme cooling. Frontiers in Energy, 2018, 12(2): 259–275 https://doi.org/10.1007/s11708-017-0521-3
8
Q Zhang, J Liu. Nano liquid metal as an emerging functional material in energy management, conversion and storage. Nano Energy, 2013, 2(5): 863–872 https://doi.org/10.1016/j.nanoen.2013.03.002
9
Y Lu, Q Y Hu, Y L Lin, D B Pacardo, C Wang, W J Sun, F S Ligler, M D Dickey, Z Gu. Transformable liquid-metal nanomedicine. Nature Communications, 2015, 6(1): 10066 https://doi.org/10.1038/ncomms10066
10
L Sheng, Z Z He, Y Y Yao, J Liu. Transient state machine enabled from the colliding and coalescence of a swarm of autonomously running liquid metal motors. Small, 2015, 11(39): 5253–5261 https://doi.org/10.1002/smll.201501364
11
J Zhang, Y Y Yao, L Sheng, J Liu. Self-fueled biomimetic liquid metal mollusk. Advanced Materials, 2015, 27(16): 2648–2655 https://doi.org/10.1002/adma.201405438
12
B Yuan, L Wang, X H Yang, Y J Ding, S C Tan, L T Yi, Z He, J Liu. Liquid metal machine triggered violin-like wire oscillator. Advancement of Science, 2016, 3(10): 1600212 https://doi.org/10.1002/advs.201600212
13
A Fassler, C Majidi. Liquid-phase metal inclusions for a conductive polymer composite. Advanced Materials, 2015, 27(11): 1928–1932 https://doi.org/10.1002/adma.201405256
14
M D Bartlett, A Fassler, N Kazem, E J Markvicka, P Mandal, C Majidi. Stretchable, high-k dielectric elastomers through liquid-metal inclusions. Advanced Materials, 2016, 28(19): 3726–3731 https://doi.org/10.1002/adma.201506243
15
N Kazem, T Hellebrekers, C Majidi. Soft multifunctional composites and emulsions with liquid metals. Advanced Materials, 2017, 29(27): 1605985 https://doi.org/10.1002/adma.201605985
16
J B Tang, X Zhao, J Li, R Guo, Y Zhou, J Liu. Gallium-based liquid metal amalgams: transitional-state metallic mixtures (TransM(2)ixes) with enhanced and tunable electrical, thermal, and mechanical properties. ACS Applied Materials and Interfaces, 2017, 9(41): 35977–35987 https://doi.org/10.1021/acsami.7b10256
17
R Guo, L Sheng, H Y Gong, J Liu. Liquid metal spiral coil enabled soft electromagnetic actuator. Science China, Technological Sciences, 2018, 61(4): 516–521 https://doi.org/10.1007/s11431-017-9063-2
18
N Lazarus, C D Meyer, S S Bedair, H Nochetto, I M Kierzewski. Multilayer liquid metal stretchable inductors. Smart Materials and Structures, 2014, 23(8): 085036 https://doi.org/10.1088/0964-1726/23/8/085036
19
S W Jin, J Park, S Y Hong, H Park, Y R Jeong, J Park, S S, Lee J S. Ha Stretchable loudspeaker using liquid metal microchannel. Scientific Reports, 2015: 11695 https://doi.org/10.1038/srep11695
20
A Fassler, C Majidi. Soft-matter capacitors and inductors for hyperelastic strain sensing and stretchable electronics. Smart Materials and Structures, 2013, 22(5): 055023 https://doi.org/10.1088/0964-1726/22/5/055023
21
Z N Zhao, J Lin, J Zhang, Y Yu, B Yuan, C C Fan, L Wang, J Liu. Liquid metal enabled flexible electronic system for eye movement tracking. IEEE Sensors Journal, 2018, 18(6): 2592–2598 https://doi.org/10.1109/JSEN.2018.2796121
22
R Guo, X L Wang, H Chang, W Yu. Ni-GaIn amalgams enabled rapid and customizable fabrication of wearable and wireless healthcare electronics. Advanced Engineering Materials, 2018, 20(10): 1800054 https://doi.org/10.1002/adem.201800054
23
P Li, Y M Wen, Z Q Zhang, S Q Pan. A high-efficiency management circuit using multiwinding upconversion current transformer for power-line energy harvesting. IEEE Transactions on Industrial Electronics, 2015, 62(10): 6327–6335 https://doi.org/10.1109/TIE.2015.2431648
24
H Zangl, T Bretterklieber, G Brasseur. A feasibility study on autonomous online condition monitoring of high-voltage overhead power lines. IEEE Transactions on Instrumentation and Measurement, 2009, 58(5): 1789–1796 https://doi.org/10.1109/TIM.2009.2012943
25
J L Ma, H X Dong, Z Z He. Electrochemically enabled manipulation of gallium-based liquid metals within porous copper. Materials Horizons, 2018, 5(4): 675–682 https://doi.org/10.1039/C8MH00203G