Field-array free flow fractionation

A field-flow fractionation device configured for separation of sample components, the field-flow fractionation device comprising:

• a channel comprising a sample inlet and a plurality of sample outlets, the channel being configured for being coupled to a flow generator for translocating the sample components along the channel in a first direction from the sample inlet to the plurality of sample outlets,
• an actuator coupled to the channel and configured for translocating the sample components via a direct current (DC) electric field in a second direction at a first angle with respect to the first direction, and
• an array of electrodes arranged in a plurality of rows that form, with respect to the first direction, a second angle that is different from the first angle, the array comprising electrical connections configured for electrically connecting the array to an alternating current (AC) power source in such a way that adjacent rows of the array can be set at different AC potentials and every other row of the array can be set at the same AC potential, wherein the electrical connections comprise two sets of conductive interdigitated fingers that form the second angle with respect to the first direction, wherein each finger of the two sets is electrically connected to a respective row of the plurality of rows of electrodes.