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. 2020 Oct 23;6(43):eabd0996. doi: 10.1126/sciadv.abd0996

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Copyright © 2020 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. 3 — (A) Schematic of Cartan transfer printing (CTP). (B) Maximum principal strain of circular arcs of different radii transferred on spherical surfaces of different radii by DTP and CTP. (C) FEM results of curves, such as a spiral and a serpentine, transferred on spherical surfaces. (D) CTP of complex patterns. (E) Optical images of patterns transfer printed by CTP (top) and DTP (bottom). The cyan is the untransferred pattern. (F) Gaussian curvature map of neck (top) and large-area tattoo-like electrodes laminated on neck through CTP (bottom). Photo credit: Youhua Wang, State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology; Flexible Electronics Research Center, Huazhong University of Science and Technology.