Evaporation and deposition of nanowire-laden binary droplets

Nanowire deposition from evaporating droplets is essential in inkjet printing because nanowires are useful as conductive materials. Nanowire alignment during evaporation is controlled by applying binary droplets where two solvents involve. In particular, we observe that the competition between edgeward capillary flows and the centerward Marangoni flows is essential to the nanowire distribution and alignment. We discuss the underlying physical mechanism to determine the evaporation dynamics and the final deposits for nanowire-laden binary droplets. This study would help understand and manipulate the evaporation and deposition dynamics of two-dimensional materials during droplet evaporation.