Branching of interfacial cracks of carbon nanotube layers at the air-water interface⋆ Yongjian Zhang, Danna Yuan, Haoran Ma, Tao Wang and Duyang Zang Eur. Phys. J. E, 42 8 (2019) 105 Published online: 15 August 2019 DOI: 10.1140/epje/i2019-11873-0