Surface-tension-confined droplet microfluidics
Chen Xinlian1, Wu Han1, 2, Wu Jinbo1, †
       

(color online) Schematic of experimental set-up. Two half-pipes, one coated with PPX nanofilm and the other uncoated, were glued to a base. Low-amplitude ∼85 Hz random vibration of the base caused translational droplet motion on the coated half-pipe, but not on the uncoated pipe (from Ref. [15], Fig. 3(a)).