Studying Effect Dimensions of Design and Simulation Silicon Nanowire Filed Effect Biosensor

Abstract:

We investigated into report a study biosensor based on silicon into an effect on the dimensions of conductance design and simulation nanowire surface with molecular DNA for sensitivity. In the design nanowire of A biosensor with 3 layers starting with polyisilicon nanowire of radius 8 NM surrounded by a 50-nm electrode layer, and the substrate by a 300nm. COMSOL Multiphysics software used to provide interaction with molecules such as DNA and the distribution of the electrostatic potential in the narrower due to the dimensions, surface nanowire charge was computed using Poisson equation with Boltzmann statistics. In the result of the effect geometry was also studied and the different dimension yield different space charge and the surface charge at interactive site were also investigated and the study demonstrate steps wise identification of all critical parameters for (DNA) attachment with surface nanowires.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 854-858
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.854
• Online since: April 2015
• Authors: M. Wesam Al-Mufti*, U. Hashim, Md. Mijanur Rahman, Tijjani Adam, Mohd Khairuddin Md Arshad, A. Rahim Ruslinda, Mat Ayub Ramzan
• Keywords: Biosensor, COMSOL Multiphysics, Nanowire Field Effect Transistor, Surface Charge

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