Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 171, Issue -, Pages 463-468Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.05.012
Keywords
Biosensor; DNA; Modelling; Finite-Element; Lab-on-chip; Label-free; Simulation
Funding
- Canada Research Chair program
- Natural Sciences and Engineering Research Council (NSERC) of Canada
- S. Korean Ministry of Education, Science, and Technology [R31-2008-000-10100-0]
Ask authors/readers for more resources
In the recent past, several models that predict the response of DNA biosensors have been proposed. These models produce approximate, order-of-magnitude estimates of the response of the DNA biosensor. Therefore, it remains an important task to identify different factors that allow for more accurate estimates of the response of DNA biosensors to be calculated. In this paper, we identify three such factors: the role of steric interactions between ions in a solution; the permeability of single-stranded DNA to ions; and the effect of the buffer solution. Using mean-field finite-element calculations, we study these effects numerically and we find out that they can all have a large impact on the response of the DNA biotransistor (BioFET). The impact is large enough to re-cast the question which phenomenon is most responsible for the sensed DNA hybridization signal? Our results here show that the factors studied are as important to the sensed signal as the charge that the target oligonucleotide possesses. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available