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http://dx.doi.org/10.1097/00007890-200407271-01651

has been cited by the following article:

• TITLE: Characteristics of AlGaN/GaN HEMTs for Detection of MIG

  AUTHORS: Hasina F. Huq, Hector Trevino II, Jorge Castillo

  KEYWORDS: AlGaN/GaN, HEMT, WBG, Biosensor, MIG, Charge-Control Model

  JOURNAL NAME: Journal of Modern Physics, Vol.7 No.13, September 23, 2016

  ABSTRACT: The aim of this research work is to analyze the surface characteristics of an improved AlGaN/GaN HEMT biosensor. The investigation leads to analyze the transistor performance to detect human MIG with the help of an analytical model and measured data. The surface engineering includes the effects of repeatability, influence of the substrate, threshold shifting, and floating gate configuration. A numerical method is developed using the charge-control model and the results are used to observe the changes in the device channel at the quantum level. A Self-Assembled Monolayer (SAM) is formed at the gate electrode to allow immobilization and reliable cross-linking between the surface of the gate electrode and the antibody. The amperometric detection is realized solely by varying surface charges induced by the biomolecule through capacitive coupling. The equivalent DC bias is 6.99436 × 10-20 V which is represented by the total number of charges in the MIG sample. The steady state current of the clean device is 66.89 mA. The effect of creation and immobilization of the protein on the SAM layer increases the current by 80 - 150 μA which ensures that successful induction of electrons is exhibited.