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Carbon Nanotube Paper-Based Electroanalytical Devices.

Youngmi Koo1,2, Vesselin N Shanov3, Yeoheung Yun4,5

  • 1FIT BEST Laboratory, Department of Chemical, Biological, and Bio Engineering, North Carolina A&T State University, Greensboro, NC 27411, USA. ykoo@ncat.edu.

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|November 9, 2018
PubMed
Summary

We developed novel carbon nanotube paper-based devices for electroanalysis. These highly aligned carbon nanotube (HA-CNT) devices integrated with an Origami-chip offer a promising platform for chemical and biomedical sensing.

Keywords:
HA-CNT sheetscarbon nanotubes (CNTs)nanostructure materialsorigami paper devicepaper-based analytical device

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Nanotechnology

Background:

  • Carbon nanotube (CNT) materials offer unique electrochemical properties.
  • Paper-based devices provide a low-cost, portable platform for sensing.
  • Integrating advanced nanomaterials into paper substrates is an active research area.

Purpose of the Study:

  • To develop novel paper-based electroanalytical devices using highly aligned carbon nanotubes (HA-CNTs).
  • To explore the fabrication of these devices using an inverse-ordered method and an Origami-chip.
  • To evaluate the electrochemical performance of the fabricated devices.

Main Methods:

  • Fabrication of bi-layered paper using a highly aligned-carbon nanotube (HA-CNT) array grown by chemical vapor deposition (CVD).
  • Utilized an inverse-ordered fabrication method to create thin CNT sheets (100- and 200-layered) as working electrodes.
  • Device assembly involved wax printing for paper patterning, silver ink printing for electrical connections, and stacking electrodes on a 2D Origami cell.

Main Results:

  • Successfully fabricated paper-based electroanalytical devices with integrated HA-CNT working electrodes.
  • Demonstrated the feasibility of using different layered HA-CNT sheets (100- and 200-layered) as working electrodes.
  • Electrochemical behavior was characterized using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV).

Conclusions:

  • The developed HA-CNT paper-based electroanalytical device offers a versatile and potentially low-cost sensing platform.
  • This technology shows promise for various chemical and biomedical applications.
  • The integration of HA-CNTs with paper substrates and Origami-chip design opens new avenues for portable electrochemical sensing.