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. 2019 Oct 4;10:4539. doi: 10.1038/s41467-019-12583-x

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — Photo-guided parallel parking of LCE walker robot. Schematic illustration of a the parallel parking of a vehicle and b how a vehicle accomplishes such a horizontal movement. c Photographs showing the process of such a vehicle-like walker robot moving horizontally from position A to position D under the stimulation of 808 nm, 520 nm, and 980 nm light (scale bar = 1.0 cm). d The real-time position coordinate of the midpoint A of this LCE walker recorded in parallel parking manner. Source data are provided as a Source Data file