Publication

Abstract : Recent developments in the dielectrically modulated FET (DMFET) electrochemical biosensor has demonstrated substantial potential for label-free detection of different biomolecules based on their dielectric constant as well as charge states. The compatibility with complementary metal-oxide-semiconductor process flow and the scope of on-chip integration of FET biosensors are considered highly encouraging for lab-on-chip-based point-of-care diagnosis applications. However, the performance of conventional DMFET gets considerably degraded with channel length scaling. This motivated the exploration of different emerging nanostructures including nanowires, fins, nano-sheets, nano-tubes, and bio-tubes for realizing robust and high-performance DMFET designs. The field has substantially expanded in the last few years, and gradually drawing more and more attention from research communities. However, to date, no extensive reviews are available of the recent trends and developments related to nanostructure-based DMFET designs. In this context, the review presented here comprehensively covered the gradual development and present state-of-arts in the field of nanostructure DMFET design. The relative merits and demerits of each class of nanostructure are identified, emphasizing specific design challenges associated with nanostructure devices. Subsequently, the potential device optimization strategies for the development of efficient DMFET designs are highlighted. Finally, an extensive comparative performance study is presented on the potential nanostructure DMFETs.