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A helical actuator driven by biased SMA: design, model, and experiment. Kecai Xie, Chengyang Li, Shouyu Sun, Zhongjing Ren, Yong Shi, Sundeep Mangla, Chang-Yong Nam, Haipeng Wang & Peng Yan. Acta Mechanica (27 February,2023) Full Abstract: https://t.c