Electrochemical Characterization of O-2 Plasma Functionalized Multi-Walled Carbon Nanotube Electrode for Legionella pneumophila DNA Sensor
- Authors
- Park, Eun Jin; Lee, Jun-Yong; Kim, Jun Hyup; Kim, Sun Kug; Lee, Cheol Jin; Min, Nam Ki
- Issue Date
- 8월-2010
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.49, no.8
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 49
- Number
- 8
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115926
- DOI
- 10.1143/JJAP.49.08JH01
- ISSN
- 0021-4922
- Abstract
- An electrochemical DNA sensor for Legionella pneumophila detection was constructed using O-2 plasma functionalized multi-walled carbon nanotube (MWCNT) film as a working electrode (WE) The cyclic voltammetry (CV) results revealed that the electrocatalytic activity of plasma functionalized MWCNT (pf-MWCNT) significantly changed depending on O-2 plasma treatment time due to some oxygen containing functional groups on the pf-MWCNT surface Scanning electron microscope (SEM) images and X-ray photoelectron spectroscopy (XPS) spectra were also presented the changes of their surface morphologies and oxygen composition before and after plasma treatment From a comparison study, it was found that the pf-MWCNT WEs had higher electrocatalytic activity and more capability of probe DNA immobilization, therefore, electrochemical signal changes by probe DNA immobilization and hybridization on pf-MWCNT WEs were larger than on Au WEs The pf-MWCNT based DNA sensor was able to detect a concentration range of 10 pM-100 nM of target DNA to detect L pneumophila (C) 2010 The Japan Society of Applied Physics
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
- College of Science and Technology > Department of Electro-Mechanical Systems Engineering > 1. Journal Articles
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