Nonlinear mechanical behaviors of a nanoparticle monolayer at the air-water interface Yongjian Zhang, Jiaqi Si, Qirui Cui, Gengtao Wang and Yujie Bai Eur. Phys. J. E, 41 2 (2018) 29 Published online: 28 February 2018 DOI: 10.1140/epje/i2018-11633-8