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Z. Naturforsch. 69a, 597 – 605
(2014)
doi:10.5560/ZNA.2013-0087
An Investigation of the Distribution of Electric Potential and Space Charge in a Silicon Nanowire
1 Nano structure lab on chip research group Institute Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis Malaysia, Tel.-Fax 04-9851208-04979 8578
2 School of Computer and Communication Engineering Universiti Malaysia Perlis
Received September 19, 2013 / revised June 22, 2014 / published online October 8, 2014
Reprint requests to: A. W. A.-M.; E-mail:
mohamenw@gmail.com
The distribution of electric potential and space charge in a silicon nanowire has been investigated. First, a model of the nanowire is generated taking into consideration the geometry and physics of the nanowire. The physics of the nanowire was modelled by a set of partial differential equations (PDEs) which were solved using the finite element method (FEM). Comprehensive simulation experiments were performed on the model in order to compute the distribution of potential and space charge. We also determined, through simulation, how the characteristic of the nanowire is affected by its dimensions. The characterization of the resulting nanowire, calculated by COMSOL Multiphysics, shows different dimensions and their effect on space charge and electrical potential
Key words: Nanowire; COMSOL; Biosensor; Space Charge Method; Nanotechnology.