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. 2023 Nov 7;6:0234. doi: 10.34133/research.0234

Fig. 13.

Fig. 13.

(A) (i) Self-morphing Christmas tree. (ii) The interaction scenario of the Christmas tree. (iii) Self-folding robot. Reproduced with permission from [169]. Copyright 2020 Association for Computing Machinery. (B) The conductive element was thermally actuated to change its shape and lighted up an LED. Reproduced with permission from [170]. Copyright 2016 Springer Nature. (C) The temperature sensor recovered its shape under the action of temperature and lighted up the LED. Reproduced with permission from [80]. Copyright 2016 Wiley-VCH. (D) (i) The design of the electrical safety device using the 4D-printed SMPs. (ii) Demonstration of the envisioned application using an array of 4D-printed switches with different Tt. Reproduced with permission from [171]. Copyright 2022 Elsevier.