An apparatus for nucleic acid sequencing, comprising a body housing: a fluidic circuit including a nanochannel; a conveying device, configured to move a nucleic acid strand through the nanochannel; and a base-detection device (4; 104; 204) set in a detection site along the nanochannel and configured to detect bases of a portion of the nucleic acid strand that is advancing in the detection site; wherein the conveying device comprises: a first electrode, a second electrode, and a third electrode arranged along the nanochannel so as to be in contact with a fluid occupying the nanochannel, the second electrode being arranged between the first electrode and the third electrode; and a control unit configured to apply a first voltage (V 1), a second voltage (V 2), and a third voltage (V 3) to the first electrode, the second electrode and the third electrode, respectively, thereby controlling movement of the nucleic acid strand through the nanochannel; characterized in that the body comprises a first structural layer, a second structural layer and a spacer layer of nanometric thickness, arranged between the first structural layer and the second structural layer, and in that the nanochannel is defined between the first structural layer and the second structural layer. a fluidic circuit including a nanochannel; a conveying device, configured to move a nucleic acid strand through the nanochannel; and a base-detection device (4; 104; 204) set in a detection site along the nanochannel and configured to detect bases of a portion of the nucleic acid strand that is advancing in the detection site; wherein the conveying device comprises: a first electrode, a second electrode, and a third electrode arranged along the nanochannel so as to be in contact with a fluid occupying the nanochannel, the second electrode being arranged between the first electrode and the third electrode; and a control unit configured to apply a first voltage (V 1), a second voltage (V 2), and a third voltage (V 3) to the first electrode, the second electrode and the third electrode, respectively, thereby controlling movement of the nucleic acid strand through the nanochannel; characterized in that the body comprises a first structural layer, a second structural layer and a spacer layer of nanometric thickness, arranged between the first structural layer and the second structural layer, and in that the nanochannel is defined between the first structural layer and the second structural layer. a first electrode, a second electrode, and a third electrode arranged along the nanochannel so as to be in contact with a fluid occupying the nanochannel, the second electrode being arranged between the first electrode and the third electrode; and a control unit configured to apply a first voltage (V 1), a second voltage (V 2), and a third voltage (V 3) to the first electrode, the second electrode and the third electrode, respectively, thereby controlling movement of the nucleic acid strand through the nanochannel; characterized in that the body comprises a first structural layer, a second structural layer and a spacer layer of nanometric thickness, arranged between the first structural layer and the second structural layer, and in that the nanochannel is defined between the first structural layer and the second structural layer.