Title :
Numerical Simulation of a DNA Sensor Based on the CNT-Gold Island Structure
Author :
Choe, Gyu-sik ; Woo, Jun-Myung ; Park, Young June ; Chang, Young Wook ; Oh, Jeseung ; Yoo, Kyung-Hwa
Author_Institution :
Sch. of Electr. Eng. & Nano-Syst. Inst.(NSI-NCRC), Seoul Nat. Univ., Seoul
Abstract :
A numerical simulation has been performed for the DNA sensors based on the field-effect-transistor (FET) structure of a CNT with the gold island- attached on the CNT tube. The model uses the Poisson-drift-diffusion theory for the CNT transistor and considers the charge exchange between the interfaces between the CNT and gold island, gold and the linker molecules. In order to compare with experiments, an example device is simulated to predict the response of the sensor to the target DNA´s in both the air and aqueous solution.
Keywords :
DNA; biosensors; carbon nanotubes; field effect transistors; gold; nanobiotechnology; nanotube devices; numerical analysis; Au; Au-C; DNA sensor; Poisson-drift-diffusion theory; carbon nanotubes; charge exchange; field-effect-transistor structure; gold island structure; numerical simulation; Boundary conditions; Charge carrier processes; DNA; Electrodes; Electrostatics; FETs; Gold; Joining processes; Numerical simulation; Poisson equations;
Conference_Titel :
Computational Electronics, 2009. IWCE '09. 13th International Workshop on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3925-6
Electronic_ISBN :
978-1-4244-3927-0
DOI :
10.1109/IWCE.2009.5091132
