DocumentCode :
2408751
Title :
pH Sensor Using Carbon Nanotubes as Sensing Material
Author :
Tran, Thu-Hong ; Kwon, Jae-Hong ; Lee, Kyong-Soo ; Lee, Jin-Woo ; Ju, Byeong-Kwon
Author_Institution :
Coll. of Eng., Korea Univ., Seoul, South Korea
fYear :
2006
fDate :
10-11 Oct. 2006
Firstpage :
490
Lastpage :
493
Abstract :
Carbon nanotube (CNT) integrated with biological functionalities is expected to be one of the most promising field in future biomedical applications. CNT material with prominent properties along with application of micro fabrication technology make possible enormous application potential sensors with high resolution, more accurate, higher sensitivity and micrometer size. One of these applications, introduced in this paper, is pH sensors using CNT as sensing material. Monitoring and evaluating the pH of the solution in a bioprocess is one of the key steps in the success of bioreactor operation. Our proposal based on the changes significantly in electrical property of CNT under different pH environment. This paper describes a method for designing a simple and fast response pH sensor employing single wall carbon nanotube (SWCNT) using a spray. The conductance and the typical amperometric response of SWCNT at room temperature at different hydroxyl ion concentrations were successfully demonstrated.
Keywords :
carbon nanotubes; chemical sensors; nanotube devices; pH measurement; biomedical applications; bioreactor operation; electrical property; hydroxyl ion concentrations; microfabrication technology; pH environment; pH sensor; sensing material; single wall carbon nanotube; Biological materials; Biomedical materials; Biomedical monitoring; Bioreactors; Biosensors; Carbon nanotubes; Design methodology; Fabrication; Organic materials; Proposals; hydroxyl ions; pH sensor; single wall carbon nanotube (SWCNT);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Electronics, 2006. ICCE '06. First International Conference on
Conference_Location :
Hanoi
Print_ISBN :
1-4244-0568-8
Electronic_ISBN :
1-4244-0569-6
Type :
conf
DOI :
10.1109/CCE.2006.350876
Filename :
4156527
Link To Document :
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