In this paper, a dielectric modulated dual material gate TFET (DM-DMG_TFET) based
biosensor is proposed. In order to detect various biomolecules, a nanogap cavity is formed
by the overlapping the gate on the drain side. The change in ambipolar current is
considered as the sensing parameter by changing the dielectric constants of various
immobilized biomolecule inside the nano cavity. A complete investigation on the
performance of the biosensor is also done by considering different positions and filling factor …