An electrokinetic video

This video was filmed through an optical microscope. The actual size of the image is approximately 200 µm wide by 100 µm high. It shows the movements of gold nanoparticles in water exposed to an alternating electric field. At t=18 seconds, the electric field is suddenly switched off, leading to the liberation of captured particles.

Cliquer le lien http://perso.ens-rennes.fr/~mwerts/DEP-video.html pour ouvrir la ressource.