Title :
Brownian noise in FET based nano-pore sensing: A 3D simulation study
Author :
Moore, I. ; Millar, C. ; Roy, S. ; Asenov, A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Glasgow, Glasgow, UK
Abstract :
We report the development and testing of simulation software, which, combining self-consistent Brownian dynamics and Drift Diffusion simulation techniques in a single simulation domain allows the simulation of the effect of ions and charged molecules on the current flowing through a sensing FET. For sensory applications an aqueous solution is introduced above the transistor gate dielectric and the effect of fixed charges on the transistor current is investigated. We significantly extend previous work by analysing the effects of mobile ions on the system and introduce an initial analysis of the noise associated with the Brownian motion of mobile ions in the solution in order to determine the sensitivity of the FET in measuring the position and number of ions.
Keywords :
Brownian motion; biosensors; computerised instrumentation; field effect transistors; 3D simulation; Brownian noise; FET based nanopore sensing; aqueous solution; drift diffusion simulation; mobile ions; self-consistent Brownian dynamics; sensory applications; simulation software; transistor current; transistor gate dielectric; Biological system modeling; Equations; Ions; MOSFETs; Mathematical model; Solid modeling;
Conference_Titel :
Computational Electronics (IWCE), 2010 14th International Workshop on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-9383-8
DOI :
10.1109/IWCE.2010.5677932
