Le principe de nos mesures est le suivant: On dépose des petites bibilles sur la puce, on applique un voltage et on regarde ce qui se passe.
Voici une photo des bibilles. Elles ont tendance à tomber dans les trous.
Il reste parfois des bulles d'air dans les trous. 
We first applied a DC voltage but we have seen nothing conclusive. So we tried a voltage Atern and we observed the movement. Unfortunately we did not have software for recording. So we asked for help to Koji who has installed software ... Japanese ...
We then had some small problems with the software in Japanese. The software has remained in drawing mode, the camera stayed on the first photo. We have increased the potential up to 40V but nothing was happening on the screen to point out that we finally saw the bubbles. In fact all the water had evaporated ...
This has caused some damage ... 
We tried again with the same chip. And there was the appearance of air bubbles (?)
And here are some videos with naughty Japanese software that was good enough to walk eventually.
The effect of dielectrophoresis on the particles.
Particles antics
Creating bubulles. It is not known yet sure why they are created but in any case it's funny. ;-)
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