Study on the adhesion behaviors between droplet and polydimethylsiloxane film

Magnetically Actuated Superhydrophilic Robot Sphere Fabricated by a Femtosecond Laser for Droplet Steering

“…As the droplet passes through the narrower channel, the wall pressure on the droplet increases significantly, as does the resistance. Eventually, the droplet fails to pass through the channel because the adhesion to the MSR is not strong enough to balance the resistance in the opposite direction. − The curves shown in Figure f were fitted by repeated experiments of the MSR carrying droplets of different sizes through channels with different widths. As we can see from the diagram, the volume of droplets that can pass through the silt changes rapidly when the width of the channel increased from 3.8 to 4.4 mm.…”