Still fixated on incorporating water into the mix, when carefully getting a droplet to stick to the needle tip, the discharge process pulls the droplet off of it. When timed just right, the action occurs simultaneously resulting in an illuminated droplet in motion. Since the shutter is open for a few seconds, you are able to see the water at rest, in motion and then at rest. Again, the gap is only 1/8th of an inch! Video url to this demonstration can be found below.