Ontology highlight
ABSTRACT:
SUBMITTER: Liu Y
PROVIDER: S-EPMC4371919 | biostudies-literature | 2015 Mar
REPOSITORIES: biostudies-literature
Liu Yuan Y Tan Peng P Xu Lei L
Proceedings of the National Academy of Sciences of the United States of America 20150223 11
When a fast-moving drop impacts onto a smooth substrate, splashing will be produced at the edge of the expanding liquid sheet. This ubiquitous phenomenon lacks a fundamental understanding. Combining experiment with model, we illustrate that the ultrathin air film trapped under the expanding liquid front triggers splashing. Because this film is thinner than the mean free path of air molecules, the interior airflow transfers momentum with an unusually high velocity comparable to the speed of sound ...[more]