Hamdy F. M. Mohamed

5 Questions 13 Answers 0 Followers

Questions related from Hamdy F. M. Mohamed

Do you have the manual of this thermal evaporation unit (Joel JEE-4X)?

I will be so glad if you could send me a manual copy of the thermal vacuum evaporation unit, model JOEL JEE-4X. Thanks in advance.

02 January 2023 4,315 1 View

Is their a correlation between out of plan and in plan conductivity in Polymer membranes?

Any one known the correlation between the proton conductivity in out of plan and in plan of the polymer membrane?

27 January 2016 5,314 2 View

What is the physical meaning of the negative activation energy for the proton conductivity of membrane before a glass transition temerature?

I measured proton conductivity of polymer electrolyte membrane in dry state and found that negative activation energy before glass transtion temperature (Tg) and a positive activation energy above...

17 January 2016 3,494 4 View

Is it possible to determine the orientation in polymer structures of thinner polymer films on Si substrates?

There is a difference on the refractive indexes between thick and thin films of a nafion polymer coated onto Si substrate.

14 April 2014 8,264 6 View

Why do ultrathin films of polymer have very high refractive indexes when measured by ellipsometry?

In ultrathin film of polymer prepared on substrate

30 January 2013 2,515 3 View