NDLI: Surface activation of plasma-patterned carbon nanotube based DNA sensing electrodes

Content Provider	Springer Nature Link
Author	Park, Eun Jin Jin, Joon Hyung Kim, Joon Hyub Min, Nam Ki
Copyright Year	2011
Abstract	We have studied the effect of treatment of multiwalled carbon nanotubes (MWCNTs) for use in DNA-based biosensors with oxygen plasma. Well-patterned MWCNT electrodes were photolithographically fabricated on glass substrates. Pure oxygen was used for etching and functionalization of the MWCNT film in a lab-made plasma chamber. The resulting electrodes exhibited a dramatic change in the morphology of their surface, the chemical composition, and the electrochemical properties in terms of peak current and peak potential separation. The electrodes also showed increased DNA immobilization efficiency and much higher sensitivity in the detection of target DNA as compared to non-treated MWCNT electrodes. Plasma treatment was optimized and electrodes were characterized by atomic force microscopy, X-ray photoelectron spectroscopy, cyclic voltammetry, and differential pulse voltammetry. Figure Well-patterned MWCNT electrodes were photolithographically fabricated on glass substrates. Pure oxygen was used for etching and functionalization of the MWCNT film. The electrodes showed increased DNA immobilization efficiency and much higher sensitivity in the detection of target DNA as compared to non-treated MWCNT electrodes
Starting Page	231
Ending Page	238
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	174
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2011-05-21
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MWCNT O2 plasma treatment Electrochemical analysis DNA sensor Nanotechnology Microengineering Analytical Chemistry Characterization and Evaluation of Materials Nanochemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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