User:Laura Flynn/Notebook/Experimental Biological Chemistry/2011/10/11

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Objective The goal of this experiment is to test the conductivity of MBP protein fibers containing AuNPs was tested using electrodes and a four point probe. Procedure A Teflon surface was obtained and a conductive epoxy was applied. Palladium wire was placed on the epoxy. Palladium foil was placed on top of the wire and epoxy. The protein fibers containing Gold Nanoparticles were placed across the foils. In Method 1, the areas of Palladium foil used were 35.20 mm2, 41.16 mm2, 40.18 mm2, 38.64 mm2. Results Method 1 was not successful as the set up did not dry overnight. The resulting probe is as pictured: Notes The key advantage of four-terminal sensing is that the separation of current and voltage electrodes eliminates the impedance contribution of the wiring and contact resistances.