Instability of stretched and twisted soap films in a cylinder
18 mins 33 secs,
33.94 MB,
MP3
44100 Hz,
249.81 kbits/sec
Share this media item:
Embed this media item:
Embed this media item:
About this item
| Description: |
Cox, S (Abersytwyth)
Wednesday 26 February 2014, 12:05-12:30 |
|---|
| Created: | 2014-02-28 17:38 |
|---|---|
| Collection: | Foams and Minimal Surfaces |
| Publisher: | Isaac Newton Institute |
| Copyright: | Cox, S |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
|
| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | Co-author: Sian Jones (Aberystwyth/Paris Sud)
A soap film, or a flexible area-minimizing membrane without bending and torsional stiffness, that is confined in a cylinder is shown to be susceptible to a surface-tension-driven instability when it is stretched or twisted. This leads to its breakdown and places an upper limit on the aspect ratio of such structures. A simple analysis confirms the values for the critical aspect ratio of the stretched film found in both simulations and experiments on soap films, and this threshold decreases with increasing twist of the film. |
|---|---|
Available Formats
| Format | Quality | Bitrate | Size | |||
|---|---|---|---|---|---|---|
| MPEG-4 Video | 640x360 | 1.92 Mbits/sec | 267.75 MB | View | Download | |
| WebM | 640x360 | 994.99 kbits/sec | 135.18 MB | View | Download | |
| iPod Video | 480x270 | 521.9 kbits/sec | 70.84 MB | View | Download | |
| MP3 * | 44100 Hz | 249.81 kbits/sec | 33.94 MB | Listen | Download | |
| Auto | (Allows browser to choose a format it supports) | |||||