Dielectric-Modulated Gate Engineered NCFET as a Label-Free Biosensor

This work observes the analog, electrical and switching parameter of double metal below negative capacitance FET (DM-B-NCFET). A cavity gap immobilization in dielectric modulation DM-B-NCFET has been proposed for many diseases. A comparative study of dielectric modulation has been taken with DM-B-NCFET immobilization various molecules such as protein, cholesterol oxide (ChOx), Streptavidin, without biomolecule. The analog impact of biomolecule on device has been studied like as enhanced transconductance for protein biomolecule, TGF, leakage current lower by 27.7%, lower subthreshold swing from without biomolecule. The observation has been shown in the form of electrical parameter as potential, electron concentration of all biomolecules. The dielectric constant is increased for improved characteristics of DM-B-NCFET device. The sensitivity of protein molecule is 7.7% higher than Streptavidin molecule. The biomolecule sensitivity is enhanced with progression of the dielectric constant. Cogenda visual TCAD simulator is applied for observing the result. The application of biomolecules is used to various analytes which have high speed, extreme density, low power consumption. The proposed device can detect particular biomolecule to diagnose various biomarkers for disease like as lung and breast cancer.