The invention relates to devices by means of which it is possible to cause fluid globules to circulate within a capillary space by means of pairs of electrodes establishing capture sites. The invention provides a device in which the electrodes of two successive pairs have in common at least one indentation...http://www.google.se/patents/US4569575?utm_source=gb-gplus-sharePatent US4569575 - Electrodes for a device operating by electrically controlled fluid displacement
