  We present a mesoscale representation of near-contact interactions between
colliding droplets which permits to reach up to the scale of full microfluidic
devices, where such droplets are produced. The method is demonstrated for the
case of colliding droplets and the formation of soft flowing crystals in
flow-focussing microfluidic devices. This model may open up the possibility of
multiscale simulation of microfluidic devices for the production of new
droplet/bubble-based mesoscale porous materials.
