Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Plant-Like Tropisms in Artificial Muscles
Helical plants have the ability of tropisms to respond to natural stimuli, and biomimicry of such helical shapes into artificial muscles has been vastly popular. However, the shape-mimicked actuators only respond to artificially provided stimulus, they are not adaptive to variable natural conditions, thus being unsuitable for real-life applications where on-demand, autonomous operations are required. Novel artificial muscles made of hierarchically patterned helically wound yarns that are self-adaptive to environmental humidity and temperature changes are demonstrated here. Unlike shape-mimicked artificial muscles, a unique microstructural biomimicking approach is adopted, where the muscle yarns can effectively replicate the hydrotropism and thermotropism of helical plants to their microfibril level using plant-like microstructural memories. Large strokes, with rapid movement, are obtained when the individual microfilament of yarn is inlaid with hydrogel and further twisted into a coil-shaped hierarchical structure. The developed artificial muscle provides an average actuation speed of approximate to 5.2% s(-1) at expansion and approximate to 3.1% s(-1) at contraction cycles, being the fastest amongst previously demonstrated actuators of similar type. It is demonstrated that these muscle yarns can autonomously close a window in wet climates. The building block yarns are washable without any material degradation, making them suitable for smart, reusable textile and soft robotic devices. ; Funding Agencies|Australian Research Council [LP200100403, DP200101397]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009~00971]; Erling-Persson Family Foundation [2020-0054]; University of Queensland, as part of the Wiley - The University of Queensland agreement via the Council of Australian University Librarians
Plant-Like Tropisms in Artificial Muscles
Helical plants have the ability of tropisms to respond to natural stimuli, and biomimicry of such helical shapes into artificial muscles has been vastly popular. However, the shape-mimicked actuators only respond to artificially provided stimulus, they are not adaptive to variable natural conditions, thus being unsuitable for real-life applications where on-demand, autonomous operations are required. Novel artificial muscles made of hierarchically patterned helically wound yarns that are self-adaptive to environmental humidity and temperature changes are demonstrated here. Unlike shape-mimicked artificial muscles, a unique microstructural biomimicking approach is adopted, where the muscle yarns can effectively replicate the hydrotropism and thermotropism of helical plants to their microfibril level using plant-like microstructural memories. Large strokes, with rapid movement, are obtained when the individual microfilament of yarn is inlaid with hydrogel and further twisted into a coil-shaped hierarchical structure. The developed artificial muscle provides an average actuation speed of approximate to 5.2% s(-1) at expansion and approximate to 3.1% s(-1) at contraction cycles, being the fastest amongst previously demonstrated actuators of similar type. It is demonstrated that these muscle yarns can autonomously close a window in wet climates. The building block yarns are washable without any material degradation, making them suitable for smart, reusable textile and soft robotic devices. ; Funding Agencies|Australian Research Council [LP200100403, DP200101397]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009~00971]; Erling-Persson Family Foundation [2020-0054]; University of Queensland, as part of the Wiley - The University of Queensland agreement via the Council of Australian University Librarians
Plant-Like Tropisms in Artificial Muscles
Aziz, Shazed (Autor:in) / Zhang, Xi (Autor:in) / Naficy, Sina (Autor:in) / Salahuddin, Bidita (Autor:in) / Jager, Edwin (Autor:in) / Zhu, Zhonghua (Autor:in)
01.01.2023
ISI:000986470900001
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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