Super-stretchable spring-like carbon nanotube ropes

Yuanyuan Shang, Xiaodong He, Yibin Li, Luhui Zhang, Zhen Li, Chunyan Ji, Enzheng Shi, Peixu Li, Ke Zhu, Qingyu Peng, Chao Wang, Xinjiang Zhang, Rongguo Wang, Jinquan Wei, Kunlin Wang, Hongwei Zhu, Dehai Wu, Anyuan Cao