Below you will find a video that I showed in last week's presentation. 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.
You notice that the particles' movements are a salient mix of Brownian motion, Poiseuillistic flow and dielectrophoretic magic.
If you want to know more details of this video and how it was made, do not hesitate to contact us!