What experiments on pinned nanobubbles can tell about the critical nucleus for bubble nucleation Qianxiang Xiao, Yawei Liu, Zhenjiang Guo, Zhiping Liu, Daan Frenkel, Jure Dobnikar and Xianren Zhang Eur. Phys. J. E, 40 12 (2017) 114 Published online: 22 December 2017 DOI: 10.1140/epje/i2017-11604-7