Anomalous boundary deformation induced by enclosed active particles
Tian Wen-De1, 2, †, Gu Yan1, Guo Yong-Kun1, Chen Kang1, 2, ‡
       

(color online) (a) Variations of mean asphericity of the boundary with active force; the inset shows the data at small forces. The decay of the time correlation function of asphericity for concentrations ϕ = 0.05 (b) and 0.4 (c).