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  Home > JCE Print > Journal of Chemical Education > Issues > 2007  > July  >
In the Laboratory
Cost-Effective Teacher
Building a Low-Cost, Six-Electrode Instrument To Measure Electrical Properties of Self-Assembled Monolayers of Gold Nanoparticles
Ralph W. Gerber and Maria Oliver-Hoyo
Department of Chemistry, North Carolina State University, Raleigh, NC 27695
Cover
July 2007
Vol. 84 No. 7
p. 1177
Abstract
The multimeter testing apparatus we describe is an inexpensive and easy to construct analog–digital meter that can be used for quantitative measurements of self-assembled gold monolayers. The instrument is capable of measuring voltage, current, and voltage or current drop through a specific area of the self-assembled monolayer utilizing a six-electrode array. Banana plugs and jacks are used for circuit construction allowing for component connections either in series or parallel, depending on the desired output. Potentiometers are included in the design for voltage and current reduction allowing for measurements of voltage or current drops in the micro range.
Supplement
A number of materials are available, including: a complete parts list with part numbers and pricing; detailed annotated views of all exterior components; a complete wiring diagram; sample stage upper and lower plates design specifications; a detailed procedure for measuring current and voltage; and calculations for determining the resistivity and conductivity.
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Contents
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More Information
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Citation
Gerber, Ralph W.; Oliver-Hoyo, Maria. J. Chem. Educ. 2007, 84, 1177.
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Keywords
First-Year Undergraduate / General; Laboratory Equipment / Apparatus; Laboratory Instruction; Nanotechnology; Second-Year Undergraduate; Surface Science; Upper-Division Undergraduate
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History
Created:
Last Updated:
5/29/2007
6/7/2007
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