Nano-fluidic field effective device to control DNA transport through the same

A nano-fluidic field effective device, comprising:

• a channel having a first side and a second side;
• a first set of electrodes adjacent to said first side of said channel, said first set of Electrodes on a substrate;
• a control unit for applying an electric potential to an electrode;
• and
• a fluid within said channel containing a charged molecule;
• a spatially varying electric field on said first set of electrodes confining said charged molecule within a predetermined area of said channel, responsive to said electric potential being applied to said first set of electrodes;
• a film comprising a second set of electrodes, said second set of electrodes adjacent to said second side of said channel;
• said film having said second set of electrodes sandwiching said channel between said first set of electrodes on said substrate;
• an electric field on said second set of electrodes confining said charged molecule to an area away from said second side of said channel, responsive to said electric potential being applied to said second set of electrodes;
• said first set of electrodes comprises trenches of metal atoms in said substrate, a bottom of said trenches narrowing to a point;
• wherein said first set of electrodes are pairs of comb-shaped electrodes with interdigitated teeth;
• wherein said second set of electrodes are single electrodes;
• wherein said single electrodes are respectively opposite said pairs of comb-shaped electrodes and are positioned such that one of said single electrodes individually corresponds to a pair of said pairs of comb-shaped electrodes.