Hi Everyone, I have recently made some graphene on copper via a chemical vapour deposition process. I have also managed to have a peep under an SEM at this. I do see what I believe to be monolayer graphene. I am very sure the contrast I see is graphene due to the growth patterns, ranging from hexagonal to star shaped, very commonly reported in literature. The contrast I see (between Cu and graphene) is simply one shade, and does not show any layering (if you imagine different contrasts for more or less layers) which could indicate several layers. I do expect monolayer graphene simply from the nature of CVD of graphene on Copper but really would like to understand this further. I have attached an image for you to see. The questions I have are: Under an SEM is it possible to tell if you have monolayer graphene? And if yes, how? Using an SEM what is the smallest seperation between two objects that can be resolved with secondary electrons? I'm very new to SEM and any help or guidance with these questions will be greatly appreciated. THANKS!!