 Aerosol Jet Printing (also known as Maskless Mesoscale Materials Deposition or M3D) is another material deposition technology for printed electronics.The Aerosol Jet process begins with atomization of an ink, via ultrasonic or pneumatic means, producing droplets on the order of one to two micrometres in diameter.The droplets then flow through a virtual impactor which deflects the droplets having lower momentum away from the stream.