Micro-Drops and Digital Microfluidics

5

EWOD Microsystems

5.1 Introduction

Electrowetting micro-devices have been conceived using the principle of electrowetting discussed in the preceding chapter. Architecture of such microdevices usually involves micro-fabricated electrodes embedded in a solid substrate, each electrode having roughly the characteristic size of a droplet (Fig. 5.1). The electrode is coated by a dielectric layer covered by a hydrophobic layer in order to increase the electrowetting effect on the droplet.

Figure 5.1 Schematic view of digital microfluidic architecture. ...