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. 2021 Jan 15;7(3):eabd6978. doi: 10.1126/sciadv.abd6978

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 5 — (A) Schematic diagram of the self-powered system of energy storage and conversion. The solar energy is converted into electrical energy and then into mechanical energy. (B) Photographs of water pumping prototype with solar cell only; less solution is obtained without extra energy. (C) Photographs of water pumping prototype with the self-powered configuration including chip-based FASC device and solar cell; more solution is obtained with energy storage. (D) Relationship between volume of the pumping solution and time of the solar cell and self-powered system, respectively. (E) Photographs of the running of a sightseeing cable car with solar cell only. The sightseeing cable car can run the short distance without extra energy storage. (F) Photographs of the running of the sightseeing cable car with the self-powered configuration including chip-based FASC device and solar cell. The sightseeing cable car can run the long distance with energy storage, demonstrating longer durability. (G) Relationship between the running distance and time of the sightseeing cable car with self-powered system and solar cell only, respectively. The running speed of the sightseeing cable car with self-powered system is faster than that with solar cell only. Photo credit: (B, C, E, and F) Jingxin Zhao, University of Macau.