GO PVA composite made by solution casting technique. Following are exact dimensions of film.
Thickness = 0.29 mm
Length= 70 mm
Width = 15 mm
As a first approximation, you will need 2 electrical contacts at both sides of a GO film.
Measure Resistance, R = V / I
Calculate resistivity:
Resistance = resistivity * length / cross section area
cross section area = width x thickness.
Calculate conductivity,
conductivity = 1 / resistivity
Make sure to use correct units. It is typical for resistivity to be reported in the units [Ohm x cm] or [Ohn x m].
Thank you D Marinskiy sir, much appreciated. But what i would calculate through above formulae , is sheet resistance or bulk resistance of film ?
Besides the two-point measurement technique well explained by D. Marinsky, there is also the four-point measurement technique. You can find more details about both these techniques in the attached file below.
Dear colleague Faisal Imtiaz
Have a nice time and good day
Herein fined an attach file i was prepared last time in details "how to measure electrical conductivity" i wish it helps you.
yours
A. El-Denglawey
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