I need to measure the zeta potential value for graphene/water nanofluid. The RI of graphene is needed.
N.B. Lauryl sodium benzene sulfonate acid was used as a surfactant.
dear Essam , may you check in this link ?>>>
https://www.researchgate.net/publication/265648722_How_to_Reliably_Determine_the_Complex_Refractive_Index_RI_of_Graphene_by_Using_Two_Independent_Measurement_Constraints
Article How to Reliably Determine the Complex Refractive Index (RI) ...
it depends on the operation frequency, Fermi level of graphene, temperature,
Isn't graphene highly anisotropic and should it not have in general two indices of refraction for a general direction of the wave?
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