Temperature Controlled Water/Oil Wettability of a Surface Fabricated by a Block Copolymer: Application as a Dual Water/Oil On-Off Switch

摘要

The manipulation of microfluids has attracted great interest due to its applications in microfluidic devices, water/oil separation, filtration, microreactors, and so on. Many efforts have been made to develop fluidic diode devices with simple operating procedures to achieve the manipulation of fluids. Compared to physical methods, such as pneumatic, piezoelectric elements, magnetic,centrifugal force, and electrokinetic flow, the reversible wettability of an interface controlling liquid flow has many advantages, such as low cost, easy operation, and no additional instruments that occupy the laboratory space.