A hand-powered microfluidic system for portable and low-waste sample discretization.In this work, we present a simple and equipment-free system for discretizing samples into tens of thousands of discrete volumes in tens of seconds. 
a hand-powered microfluidic system
In this system, the water-soluble film seals the device inlet to form a closed channel-chamber system, while the syringe is used to create a vacuum in the closed system. 
the water-soluble film
In this system, the water-soluble film seals the device inlet to form a closed channel-chamber system, while the syringe is used to create a vacuum in the closed system. 
the syringe