科研之友
微信
新浪微博
Facebook
分享链接
摘要
We report on the thickness variation measurement of a soap film due to a local perturbation, using Young%26apos;s double-slit experiment configuration. We map a laser-heated deformation of a vertical free-standing draining thin soap film using the differential change of optical path in the interferometer. The experiment has a resolution of about 0.1 nm and enables to follow the liquid flow dynamics. We evidence a bottleneck formation in the heated region of the film that perturbs the usual flow. Such an experimental set-up could then be adapted to measure other tiny variations in fluctuating hydrodynamics such as capillary waves for example.
- 出版日期2013-10
