Patterning of Forests of Carbon Nanotubes (CNTs) Using Copper Overlayers as Iron Catalyst Deactivators

Reut Yemini; Merav Muallem; Tali Sharabani; Eti Teblum; Yossi Gofer; Gilbert D. Nessim

doi:10.1021/acs.jpcc.6b01676

Patterning of Forests of Carbon Nanotubes (CNTs) Using Copper Overlayers as Iron Catalyst Deactivators

Reut Yemini, Merav Muallem, Tali Sharabani, Eti Teblum, Yossi Gofer, Gilbert D. Nessim

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We show a simple technique to grow patterned carbon nanotube (CNT) forests by annealing the catalytic surface using copper patterns (as stencil or bridge) prior to, or during, CNT growth. We demonstrate that copper diffused into the iron catalyst and deactivated it, thus preventing CNT growth on the areas where the copper was present. This technique is a promising and simple way to pattern CNT forests since it does not require the usual lithography and lift-off of the catalyst. This catalyst deactivating overlayer principle can be extended to pattern other 1D nanostructures such as carbon nanofibers or nanowires and 2D nanostructures such as graphene or transition metal dichalcogenides using chemical vapor deposition (CVD).

Original language	English
Pages (from-to)	12242-12248
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	120
Issue number	22
DOIs	https://doi.org/10.1021/acs.jpcc.6b01676
State	Published - 9 Jun 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

Funding

This research was partially funded by the Israel Science Foundation (ISF) through the Israel National Research Center for Electrochemical Propulsion (INREP) and I-CORE Program (2797/11). We are grateful to Dr. Michal Ejgenberg for her help in operating XPS instrument and to Itamar Padel for help in preparing copper stencils.

Funders	Funder number
Israel Science Foundation
Israeli Centers for Research Excellence	2797/11
Israel National Research Center for Electrochemical Propulsion

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abstract = "We show a simple technique to grow patterned carbon nanotube (CNT) forests by annealing the catalytic surface using copper patterns (as stencil or bridge) prior to, or during, CNT growth. We demonstrate that copper diffused into the iron catalyst and deactivated it, thus preventing CNT growth on the areas where the copper was present. This technique is a promising and simple way to pattern CNT forests since it does not require the usual lithography and lift-off of the catalyst. This catalyst deactivating overlayer principle can be extended to pattern other 1D nanostructures such as carbon nanofibers or nanowires and 2D nanostructures such as graphene or transition metal dichalcogenides using chemical vapor deposition (CVD).",

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Patterning of Forests of Carbon Nanotubes (CNTs) Using Copper Overlayers as Iron Catalyst Deactivators

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