Next Article in Journal
A Flow-Through Microfluidic Relative Permittivity Sensor
Previous Article in Journal
Numerical and Experimental Study of Microchannel Performance on Flow Maldistribution
Previous Article in Special Issue
Fabriction of ZnO Nanorods with Strong UV Absorption and Different Hydrophobicity on Foamed Nickel under Different Hydrothermal Conditions
Open AccessArticle

Improved Electrophoretic Deposition of Vertical Single Wall Carbon Nanotubes with Nanoscopic Electrostatic Lenses

1
Department of Physics, New Jersey Institute of Technology, University Heights, Newark, NJ 07102, USA
2
Department of Chemistry and Environment Science, New Jersey Institute of Technology, University Heights, Newark, NJ 07102, USA
3
Polymers Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(3), 324; https://doi.org/10.3390/mi11030324
Received: 20 November 2019 / Revised: 15 March 2020 / Accepted: 17 March 2020 / Published: 20 March 2020
(This article belongs to the Special Issue Nanowires and Nanoprobes – Functionalized Arrays)
Under certain conditions, electrophoretic deposition (EPD) of single-wall carbon nanotubes (SWCNTs) onto metal at the base of nanoscale insulating windows can result in a single SWCNT per window, bonded at one end to the metal. During EPD charge, buildup on the insulator creates electrostatic lenses at the windows that control the trajectory of the SWCNTs. The aim is to develop a reproducible process for deposition of individual vertically oriented SWCNTs into each window to enable novel devices. The length of the SWCNTs is shown to be the most critical parameter in achieving results that could be used for devices. In particular, single nanotube deposition in windows by EPD was achieved with SWCNTs with lengths on the order of the window depth. By performing current vs voltage (IV) measurements against a platinum wire in a phosphate buffer and by modeling the data, the presence of the nanotube can be detected, the contact interface can be studied, and the nanotube’s viability for device applications can be determined. These results provide a basis for process integration of vertical SWCNTs using EPD. View Full-Text
Keywords: carbon nanotubes; nanoprobe arrays; electrophoretic deposition; nanoscopic electrostatic lens; vertical carbon nanotubes; zeta potential; Raman spectroscopy carbon nanotubes; nanoprobe arrays; electrophoretic deposition; nanoscopic electrostatic lens; vertical carbon nanotubes; zeta potential; Raman spectroscopy
Show Figures

Figure 1

MDPI and ACS Style

Lakshmanan, S.; Kanwal, A.; Liu, S.; Patlolla, A.; Iqbal, Z.; Mitra, S.; Thomas, G.A.; Fagan, J.A.; Farrow, R.C. Improved Electrophoretic Deposition of Vertical Single Wall Carbon Nanotubes with Nanoscopic Electrostatic Lenses. Micromachines 2020, 11, 324.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop