# Dotwave in a box : emergence of normal mode

Posted by on Jan 19, 2014 in Blog, Featured, Original videos, Slider, Videos | 2 comments

On this video, the walking droplet is confined in a small cavity (Approx. 6 to 8 times the faraday wavelength)

We observe the emergence of several normal modes of vibration of a walking droplet in a circular corral.

At first, the movement seems “random”, then, the whole wave-particle system synchronizes, and starts turning alltogether.

Differrent modes are possible, with different radius for the droplet trajectory : on this video we see a mode with the droplet on a large radius trajectory, and also a mode where the droplet is on a short radius trajectory

Its seems that thoses radius coincide with with the knots ofs thefaraday standing waves of the cavity, hence we have a quantization of the radius of the different trajectories.

# Vibration modes of a walking droplet trapped in a small circular box

Posted by on Jan 19, 2014 in Blog, Original videos, Videos | 0 comments

When a walking droplet is trapped in a small box, the waves that it has generated extends to the whole frame.

Thus those waves  can resonate  and form normal modes of vibration inside the cavity.

The droplet is then forced to move according to this normal wave field

# 2 walking droplets getting attracted

Posted by on Jun 19, 2013 in Blog, Featured, Original videos | 7 comments

When  two walking droplets start turning around each other, the distance between them is n times the  wavelength (with n an integer) plus a constant.

# walking droplet interfering with single slit

Posted by on Apr 2, 2013 in Original videos, Videos | 2 comments

We can see how a walking droplet moves inside a slit, and how it can reverse because of interaction of waves with the slits.

# Tunnel effect

Posted by on Feb 19, 2013 in Videos | 0 comments

From Couder’s Lab, supplementary info of Phys. Rev. Lett. 102, 240401 (2009)