User:Elaine Marie Robbins/Notebook/CHEM-496/2011/10/11

Conductivity of AuNP

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Objective To make electrodes to test conductivity of MBP protein fibers containing AuNPs using a four point probe. Description Put down conductive epoxy on Teflon surface. Put palladium wire on epoxy. Put Pd foil on top of wire and epoxy. Deposit AuNP-containing protein fibers across foils. Data Areas of Pd foil used, from left to right: 35.20 mm2, 41.16 mm2, 40.18 mm2, 38.64 mm2. Conductive epoxy did not dry overnight. Notes A four point probe is more accurate than a two point probe because a four point probe uses separate electrodes to carry current and measure voltage, while a two point probe combines them.