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However, 3D LCE actuators capable of precisely controllable stepwise actuation, which can enhance functionality and versatility of LCE robots for multifarious complicated applications, are still in urgent need for the reported LCE actuators mainly exploit the one\u2010step actuation upon the liquid\u2010crystallin (LC)\u2010isotropic phase transition temperature (<jats:italic>T<\/jats:italic><jats:sub>i<\/jats:sub>). Herein, a catalyst\u2010free LC\u2010vitrimer actuator with supercritical behavior is designed, which can perform precisely controllable stepwise actuation with extraordinary shape stability over a broad temperature range of about 70\u2009\u00b0C. Moreover, supercritical behavior enables the actuator to be used in nematic phase, imparting the actuator with some extra advantages, such as higher mechanical strength and actuation stability, over the one used above <jats:italic>T<\/jats:italic><jats:sub>i<\/jats:sub>. Furthermore, the LCE can be reprogrammable into arbitrary 3D actuators, which can further be integrated into single\u2010material actuators with complex stepwise actuation, offering a generalized strategy of LCE actuators for sophisticated practical soft robots.<\/jats:p><\/jats:sec>","DOI":"10.1002\/aisy.202000249","type":"journal-article","created":{"date-parts":[[2021,5,7]],"date-time":"2021-05-07T02:00:08Z","timestamp":1620352808000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Reprogrammable 3D Liquid\u2010Crystalline Actuators with Precisely Controllable Stepwise Actuation"],"prefix":"10.1002","volume":"3","author":[{"given":"Qiaomei","family":"Chen","sequence":"first","affiliation":[{"name":"MOE Key Laboratory of Bioorganic Phosphorus Chemistry &amp; Chemical Biology Department of Chemistry Tsinghua University  Beijing 100084 China"},{"name":"Beijing Advanced Innovation Center for Soft Matter Science and Engineering &amp; State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology  Beijing 100029 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weiwei","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Advanced Innovation Center for Soft Matter Science and Engineering &amp; State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology  Beijing 100029 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yen","family":"Wei","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Bioorganic Phosphorus Chemistry &amp; Chemical Biology Department of Chemistry Tsinghua University  Beijing 100084 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1363-6513","authenticated-orcid":false,"given":"Yan","family":"Ji","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Bioorganic Phosphorus Chemistry &amp; Chemical Biology Department of Chemistry Tsinghua University  Beijing 100084 China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,5,6]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201800907"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201603483"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12555-016-0462-3"},{"key":"e_1_2_9_3_3","doi-asserted-by":"publisher","DOI":"10.1038\/s41578-018-0016-9"},{"key":"e_1_2_9_3_4","doi-asserted-by":"publisher","DOI":"10.1038\/s41928-018-0024-1"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.200904059"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1039\/c3nr00037k"},{"key":"e_1_2_9_4_3","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.9b06757"},{"key":"e_1_2_9_4_4","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.aax5746"},{"key":"e_1_2_9_4_5","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201903452"},{"key":"e_1_2_9_4_6","doi-asserted-by":"publisher","DOI":"10.1126\/science.1261019"},{"key":"e_1_2_9_4_7","doi-asserted-by":"publisher","DOI":"10.1038\/nmat4433"},{"key":"e_1_2_9_4_8","doi-asserted-by":"publisher","DOI":"10.1039\/C8SM02174K"},{"key":"e_1_2_9_4_9","doi-asserted-by":"publisher","DOI":"10.1039\/C9SM02237F"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201602745"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201606467"},{"key":"e_1_2_9_5_3","doi-asserted-by":"publisher","DOI":"10.1038\/nmat3812"},{"key":"e_1_2_9_5_4","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5b12531"},{"key":"e_1_2_9_5_5","doi-asserted-by":"publisher","DOI":"10.1039\/C7TA00458C"},{"key":"e_1_2_9_5_6","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201706597"},{"key":"e_1_2_9_5_7","doi-asserted-by":"publisher","DOI":"10.1039\/C8SC05358H"},{"key":"e_1_2_9_5_8","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.201906458"},{"key":"e_1_2_9_5_9","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201911612"},{"key":"e_1_2_9_5_10","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201915694"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.aay8606"},{"key":"e_1_2_9_7_1","first-page":"451","volume":"50","author":"Chen Q.","year":"2019","journal-title":"Acta Polym. 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