Title :
Modeling Carbon Nanotube Sensors
Author :
Deng, Jie ; Ghosh, Kunal ; Wong, H. S Philip
Author_Institution :
Stanford Univ., Stanford
Abstract :
Carbon nanotube sensors are modeled and their design space analyzed. It is found that semiconducting nanotubes are almost always preferred over metallic nanotubes, intrinsic nanotubes maximize sensor performance, while minimizing static power consumption, and higher biasing points maximize dynamic range, while improving sensitivity. Insights into design of nanoscale sensors for optimal performance are provided, and it is shown that single-molecule analyte detection can be readily achieved with 1 nm diameter nanotubes up to 30 mum in length.
Keywords :
biosensors; carbon nanotubes; gas sensors; semiconductor nanotubes; carbon nanotube sensor; intrinsic nanotube; nanoscale sensor; semiconducting nanotube; single-molecule analyte detection; static power consumption; Biosensors; Carbon nanotubes; Chemical and biological sensors; Chemical sensors; Dynamic range; FETs; Nanobioscience; Performance analysis; Sensor arrays; Temperature sensors; Carbon nanotube (CNT); modeling; nanoscale; sensors;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.905039