Fun Movies and Pictures

(Bubble Rafts -- Electroconvection -- Langmuir monolayers -- Flood pictures)
(for more details on each movie see the various research pages)

-- -- -- -- NOTICE: Some specially compressed videos -- -- -- --

If you cannot play the video, please download the Xvid(638kb) for decoding.

Link: http://www.xvid.org/Downloads.15.0.html

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Bubble Rafts

We use bubble rafts for multiple different studies.

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FRACTURE STUDIES

Most recent studies – using a bubble raft to look at material failure under expansion. This series of movies shows a bubble raft being pulled apart under various conditions.

This initial movie was our first one that showed fracture:

http://physics.uci.edu/~dennin/images/movies/15gly_200bb_7dps.avi

For this series of images, the bubble size ~0.7mm and the barriers are moving at 1.3 cm/s

This first set is for monodisperse systems:

http://physics.uci.edu/~dennin/images/movies/3cm_4cm_3000_arc.avi (2.59MB)

http://physics.uci.edu/~dennin/images/movies/5_4_3000_arc.avi (4.58MB)

http://physics.uci.edu/~dennin/images/movies/7cm_4cm_3000_arc.avi (5.14MB)

http://physics.uci.edu/~dennin/images/movies/9cm_4cm_3000_arc.avi (5.84MB)

This next set is for polydisperse rafts. The images are the same scale.

http://physics.uci.edu/~dennin/images/movies/3_4_3000_P_arc.avi (4.05MB)

http://physics.uci.edu/~dennin/images/movies/5_4_3000_P_arc.avi (4.63MB)

http://physics.uci.edu/~dennin/images/movies/7_4_3000_P_arc.avi (6.89MB)

http://physics.uci.edu/~dennin/images/movies/9_4_3000_P_arc.avi (6.10MB)

This next set of movies applies an oscillatory compression/expansion to the raft:

http://physics.uci.edu/~dennin/images/movies/full20000A_4000_1.25hz_arc.avi 1.25hz (7.68MB)

http://physics.uci.edu/~dennin/images/movies/fully40000A_40002.5hz_arc.avi 2.5hz (8.02MB)

http://physics.uci.edu/~dennin/images/movies/full20000A_4000_P_1.25hz_arc.avi 1.25hz (7.68MB)

http://physics.uci.edu/~dennin/images/movies/full40000A_4000_P_2.5hz_arc.avi 2.5hz (7.97MB)

CHANNEL FLOW

We also study bubbles in channel flows. These are very preliminary results.

http://physics.uci.edu/~dennin/images/movies/P_s_200ms_300fram_arc.avi

http://physics.uci.edu/~dennin/images/movies/P_0.5_200ms_150fram_arc.avi

http://physics.uci.edu/~dennin/images/movies/P_1_200ms_150fram_arc.avi

http://physics.uci.edu/~dennin/images/movies/quickvideo_2mm_10mm_arc.avi

GENERAL FOAM FLOW

There are movies of two different types of two-dimensional foams:

bubble rafts: Couette flow movie 2  (animated gif version)     bubble raft: voronoi representation of parallel flow

T1 event in a monolayer foam

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Electroconvection

1.  MODULATION EXPERIMENT MOIVES:
In these images, for a sense of scale, the stripes all have a wavelength on the order of 30 microns.
The first set of movies are real time (links take you take avi versions of the movies):

Unmodulated Electroconvection  Modulated electroconvection  After modulation

2.  DOMAIN GROWTH

In these images and movies, for a sense of scale, the stripes all have a wavelength on the order of 30 microns.
Close up image of zig and zag rolls with a domain wall in N4 system.

Two movies of domain growth of zig/zag rolls (movies represent approximately 30 minute of evolution):

movie in N4 system movie in I52 system    (differences discussed in electroconvection section)

3. SPATIOTEMPORAL CHAOS:

Shown here is a false-color, demodulated image of a single snapshot of the amplitude of zig rolls during electroconvection in I52.

This is an example of spatio-temporal chaos and demonstrates the spatial disorder in the amplitude.

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Langmuir Monolayers

The following is a picture of a DPPC monolayers that are used for studies with annexin proteins. The dark domains are a condensed
phase and the white areas are a liquid expanded phase.

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Some results of the Aug 2001 Flood:

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