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Micromachines 2016, 7(4), 72;

Carbon Nanotube Paper-Based Electroanalytical Devices

FIT BEST Laboratory, Department of Chemical, Biological, and Bio Engineering, North Carolina A&T State University, Greensboro, NC 27411, USA
NSF-Engineering Research Center, North Carolina A&T State University, Greensboro, NC 27411, USA
Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
Author to whom correspondence should be addressed.
Academic Editor: Sergey S. Shevkoplyas
Received: 2 February 2016 / Revised: 22 March 2016 / Accepted: 31 March 2016 / Published: 20 April 2016
(This article belongs to the Special Issue Paper-Based Microfluidic Devices for Point-of-Care Diagnostics)
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Here, we report on carbon nanotube paper-based electroanalytical devices. A highly aligned-carbon nanotube (HA-CNT) array, grown using chemical vapor deposition (CVD), was processed to form bi-layered paper with an integrated cellulose-based Origami-chip as the electroanalytical device. We used an inverse-ordered fabrication method from a thick carbon nanotube (CNT) sheet to a thin CNT sheet. A 200-layered HA-CNT sheet and a 100-layered HA-CNT sheet are explored as a working electrode. The device was fabricated using the following methods: (1) cellulose-based paper was patterned using a wax printer, (2) electrical connection was made using a silver ink-based circuit printer, and (3) three electrodes were stacked on a 2D Origami cell. Electrochemical behavior was evaluated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). We believe that this platform could attract a great deal of interest for use in various chemical and biomedical applications. View Full-Text
Keywords: paper-based analytical device; carbon nanotubes (CNTs); HA-CNT sheets; nanostructure materials; origami paper device paper-based analytical device; carbon nanotubes (CNTs); HA-CNT sheets; nanostructure materials; origami paper device

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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 (CC BY 4.0).

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Koo, Y.; Shanov, V.N.; Yun, Y. Carbon Nanotube Paper-Based Electroanalytical Devices. Micromachines 2016, 7, 72.

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