What is the role of silicon oxide in graphene visibility experiments?

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Dele
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Hello all

Quickly, does anyone have an explanation if any for usage of silicon oxide in graphene visibility experiment?? I have a seminar presentation in one hour and I know its a possible question from one of the supervisors.

Thank you
 
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From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...

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