Laser induced forward transfer (LIFT) is a freeform, additive patterning technique capable of depositing high resolution
metal structures. A laser pulse is used to generate small droplets from the donor material, defined by the spot size and
energy of the pulse. Metallic as well as non-metallic materials can be patterned using this method. Being a contactless,
additive and high resolution patterning technique, this method enables fabrication of multi-layer circuits, enabling bridge
printing, thereby decreasing component spacing. Here we demonstrate copper droplet formation from a thin film donor.
The investigation of the LIFT process is done via shadowgraphy and provides detailed insight on the droplet formation.
Of particular importance is the interplay of the droplet jetting mechanism and the spacing between donor and receiving
substrate on a stable printing process. Parameters such as the influence of laser fluence and donor thickness on the
formation of droplets are discussed. An angle deviation analysis of the copper droplets during flight is carried out to
estimate the pointing accuracy of the transfer. The possibility of understanding the droplet formation, could allow for
stable droplets transferred with large gaps, simplifying the process for patterning continuous high-resolution conductive