Next Article in Journal
Next Article in Special Issue
Previous Article in Journal
Previous Article in Special Issue
Sensors 2012, 12(3), 2582-2597; doi:10.3390/s120302582
Article

Integrating Metal-Oxide-Decorated CNT Networks with a CMOS Readout in a Gas Sensor

1
, 1
, 2
, 3
, 1
, 2
, 3
 and 1,*
Received: 17 January 2012; in revised form: 14 February 2012 / Accepted: 15 February 2012 / Published: 27 February 2012
(This article belongs to the Special Issue Sensing at the Nano-Scale: Chemical and Bio-Sensing)
View Full-Text   |   Download PDF [958 KB, uploaded 21 June 2014]
Abstract: We have implemented a tin-oxide-decorated carbon nanotube (CNT) network gas sensor system on a single die. We have also demonstrated the deposition of metallic tin on the CNT network, its subsequent oxidation in air, and the improvement of the lifetime of the sensors. The fabricated array of CNT sensors contains 128 sensor cells for added redundancy and increased accuracy. The read-out integrated circuit (ROIC) was combined with coarse and fine time-to-digital converters to extend its resolution in a power-efficient way. The ROIC is fabricated using a 0.35 µm CMOS process, and the whole sensor system consumes 30 mA at 5 V. The sensor system was successfully tested in the detection of ammonia gas at elevated temperatures.
Keywords: carbon nanotube (CNT); read-out integrated circuit; single die; metal decoration carbon nanotube (CNT); read-out integrated circuit; single die; metal decoration
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Lee, H.; Lee, S.; Kim, D.-H.; Perello, D.; Park, Y.J.; Hong, S.-H.; Yun, M.; Kim, S. Integrating Metal-Oxide-Decorated CNT Networks with a CMOS Readout in a Gas Sensor. Sensors 2012, 12, 2582-2597.

AMA Style

Lee H, Lee S, Kim D-H, Perello D, Park YJ, Hong S-H, Yun M, Kim S. Integrating Metal-Oxide-Decorated CNT Networks with a CMOS Readout in a Gas Sensor. Sensors. 2012; 12(3):2582-2597.

Chicago/Turabian Style

Lee, Hyunjoong; Lee, Sanghoon; Kim, Dai-Hong; Perello, David; Park, Young June; Hong, Seong-Hyeon; Yun, Minhee; Kim, Suhwan. 2012. "Integrating Metal-Oxide-Decorated CNT Networks with a CMOS Readout in a Gas Sensor." Sensors 12, no. 3: 2582-2597.



Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert