We report a successful development of a floating electrode-based DNA sensor with controllable responses. Here, metallic floating electrodes were fabricated to form Schottky barriers between carbon nanotubes and the floating electrodes. We showed that the sensor response could be enhanced by increasing the number of floating electrodes. We also analyzed the response of the sensors based on the Langmuir isotherm theory.
Bibliographical noteFunding Information:
This research was supported by the Conversing Research Center Program (No. 2011K000683). S.H. acknowledges the support from the National Research Foundation of Korea (NRF) grant (No. 2011-0000390 ) and the Samsung electronics .
- Carbon nanotube
- Floating electrode
- Schottky barrier