A Holistic Review of Wetting of Droplets

Electrowetting is used in many technological applications such as lab-on-chip and display technologies. Its efficacy is limited by contact angle hysteresis and contact angle saturation. The classical model of electrowetting, derived from the energy-minimization approach, lacks a full explanation of these issues. We use magnetic fields to control the wetting of droplets. This phenomenon is called Magnetowetting. We derive and experimentally verify a relationship between the change in contact angle of a droplet and the magnetic flux density through the droplet using the Maxwell Stress Tensor.