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. 2021 Jul 23;7(30):eabg3677. doi: 10.1126/sciadv.abg3677

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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. 6 — (A) Left: Schematic of the LCE bending actuator (dimensions, 15 mm by 5 mm by 0.8 mm) and optoelectronic components. Right: Bending deformation of the actuator in two modes [(top) mode 1: thermally induced bending causes the disappearance of Schlieren texture and thus transparency in the actuator; (bottom) mode 2: nonthermally induced (external force) bending does not change the polydomain Schlieren texture, so the actuator remains whitish opaque]. (B) Optical signals detecting and differentiating thermally induced bending and nonthermally induced bending.