Carbon nanotube-nanocrystal heterostructures fabricated by electrophoretic deposition

Mahajan SV, Hasan SA, Cho J, Shaffer MSP, Boccaccini AR, Dickerson JH (2008)

Publication Type: Journal article

Publication year: 2008

Journal

Nanotechnology Institute of Physics: Hybrid Open Access

Publisher: Institute of Physics: Hybrid Open Access

Pages Range: -

Journal Issue: 19

DOI: 10.1088/0957-4484/19/19/195301

Abstract

Alternating layer, carbon nanotubes-nanocrystal composite films, comprising multi-walled carbon nanotubes (MWCNTs) and iron oxide (Fe3O 4) nanocrystals, have been fabricated via electrophoretic deposition (EPD) on stainless steel and gold substrates. Low field-high current and high field-low current EPD schemes were integrated to produce the composite films. The low field-high current EPD approach produced porous mats from an aqueous suspension of the MWCNTs, while the high field-low current EPD approach produced tightly packed nanocrystal films from a dispersion of the nanocrystals in hexane. Large electric fields applied during the nanocrystal EPD and strong van der Waals interactions among the nanocrystals facilitated the formation of tightly packed nanocrystal films atop the MWCNT mats to create CNT mat-nanocrystal film composites. The surface coverage and homogeneity of the nanocrystal films improved with repeated deposition of the nanocrystals on the same mat. The assembly of nanotube mats on top of the CNT mat-nanocrystal film composite confirmed the feasibility of multilayered CNT mat-nanocrystal film heterostructures suitable for a range of devices. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques were employed to characterize the surface coverage, homogeneity, and topology of these composite films. © IOP Publishing Ltd.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Vanderbilt University

United States (USA) (US) Imperial College London / The Imperial College of Science, Technology and Medicine

United Kingdom (GB)

How to cite

APA:

Mahajan, S.V., Hasan, S.A., Cho, J., Shaffer, M.S.P., Boccaccini, A.R., & Dickerson, J.H. (2008). Carbon nanotube-nanocrystal heterostructures fabricated by electrophoretic deposition. Nanotechnology, 19, -. https://dx.doi.org/10.1088/0957-4484/19/19/195301

MLA:

Mahajan, S. V., et al. "Carbon nanotube-nanocrystal heterostructures fabricated by electrophoretic deposition." Nanotechnology 19 (2008): -.

BibTeX: Download