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In the Laboratory
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Template Synthesis and Magnetic Manipulation of Nickel Nanowires
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Anne K. Bentley, Mohammed Farhoud, and Arthur B. Ellis
Department of Chemistry, University of Wisconsin–Madison, Madison, WI 53706
George C. Lisensky
Department of Chemistry, Beloit College, Beloit, WI 53511
Anne-Marie L. Nickel
Department of Physics and Chemistry, Milwaukee School of Engineering, Milwaukee, WI 53202
Wendy C. Crone
Department of Engineering Physics, University of Wisconsin–Madison, Madison, WI 53706
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May 2005
Vol. 82 No. 5
p. 765
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| Abstract |
In this experiment students prepare nickel nanowires using a template synthesis technique and characterize their properties. Electrodeposition of nickel to fill the 200-nm diameter pores of a commercially-available alumina filtration membrane is accomplished using a nickel salt solution and a AA battery. The nanowires, which are ~200 nm in diameter and up to ~50 mm in length, can be liberated from the membrane by dissolving the alumina template with sodium hydroxide. Suspensions of nanowires on a microscope slide can be observed using a common optical microscope. The alignment and movement of the magnetic nanowires can be controlled using magnets. This experiment is appropriate in introductory college chemistry courses and in upper-level physical and inorganic chemistry courses. The experiment provides students with a hands-on laboratory experience in nanotechnology, while illustrating fundamental ideas from a variety of areas, including electrochemistry, magnetism, and materials science.
See Letter re: this article.
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| Supplement |
Instructions for the students, including lab questions, notes for the instructor are available. Videos of the magnetic behavior are available at Nickel Nanowires (ref 16 of the article).
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| More Information |
Citation |
Bentley, Anne K.; Farhoud, Mohammed; Ellis, Arthur B.; Lisensky, George C.; Nickel, Anne-Marie L.; Crone, Wendy C. J. Chem. Educ. 2005 82 765.
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Keywords |
Electrochemistry; Laboratory Instruction; Magnetic Properties; Materials Science; Nanotechnology; Solid-State Chemistry
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History |
Created:
Last Updated: |
March 28, 2005
November 8, 2005
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Link to Letter added (Nov 2005).
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