Imagine a silica microsphere half of which is coated with a thin gold coating and having a trimethylammoniumpropanethiol molecule anchored to the gold. What do you think will happen to this Janus microsphere when placed in a droplet of water supported on a gold electrode held horizontally and having a second gold needle shaped electrode inserted into the top of the droplet and then a bias voltage applied between the electrodes alternately switching between positive and negative?