Contents I. Introduction
Rapid technology advancement towards microelectronic components requires high utilization of the corona wind produced by electrohydrodynamic (EHD) gas pumps for efficient cooling solutions. Producing such corona wind involves two asymmetric electrodes: a highly curved (such as needle or small diameter wire) and a small curvature (such as plate or ground). The gas molecules are ionized by this high electrical field and controlled by Coulomb force; these ions migrate to the grounded electrode. The ions transfer their momentum to neutral molecules via collision during the migration which creates a bulk flow called corona wind [1]. Therefore, corona wind is created by an electrode charged with a direct current (either positive or negative) at a sufficiently high voltage (generally in the kilovolt (kV) range). Although the applied voltage is high, the current involved is usually very small (in the microampere (μA) to milliampere (mA) range) making the required power insignificant which is one of the most attractive features for EHD technique.
