Labon Chip Devices

Understanding microfluidics facilitated developing integrated lab-on-a-chip (LoC) devices we use now for clinical diagnostics and to screen minute quantities of dissolved compounds. In most microfluidic devices, continuously flowing liquids traverse micro-channels fabricated mainly from glass or plastics. Both LoC devices and the bee's hemocoel rely on surface tension to manage discrete droplets at small length scales. One technique involves ElectroWetting-On-Dielectric (EWOD) where a varying electrical potential changes the wettability of liquids placed on the surface of a dielectric. EWOD reduces a sample's size below those required for conventional, continuous flow microfluidic chips, as well as reconfigures and rescales the chip's architecture. The similarity of the EWOD system to digital microelectronic systems has engendered 'digital microfluidics.' Now EWOD is used to dispense, cut, and transport tiny droplets.

0 0

Post a comment