TY - JOUR PY - 2021// TI - How to deform an egg yolk? On the study of soft matter deformation in a liquid environment JO - Physics of fluids (Woodbury, N.Y. : 1994) A1 - Lang, Ji (郎骥) A1 - Nathan, Rungun A1 - Wu, Qianhong (吴千红) SP - 011903 EP - 011903 VL - 33 IS - 1 N2 - In this paper, we report a novel experimental study to examine the response of a soft capsule bathed in a liquid environment to sudden external impacts. Taking an egg yolk as an example, we found that the soft matter is not sensitive to translational impacts but is very sensitive to rotational, especially decelerating-rotational, impacts, during which the centrifugal force and the shape of the membrane together play a critical role in causing the deformation of the soft object. This finding, as the first study of its kind, reveals the fundamental physics behind the motion and deformation of a membrane-bound soft object, e.g., egg yolk, cells, and soft brain matter, in response to external impacts.
LA - SN - 1070-6631 UR - http://dx.doi.org/10.1063/5.0035314 ID - ref1 ER -