Dear Mr Christian, So what should i do to measure the electrical conductivity of my sample, except by using the four point probe test and what is the equation?

tahnk you very much for your atttention.

regrads,

lita

Dear Mr Christian,

what do you think if i measure the electrical conductivity with potensiostat cyclic voltametry? because in my campuss don't have Four point probe. what if i made my sample stick in a tape and than measure it with potensiostat?

More than cyclic voltammetry you can infere the conductivity from electrochemical impedance spectroscopy. With cyclic voltammetry you will possibly have a huge capacitative response.

We have already worked the idea of Christian using a cylinder and applying pressure and it works fine. Another pair of contacts in the direction parallel to compression would serve to get both conductivities.

Density is measurable through a technique called pycnometry (or ultra-pycnometry).