... purity > 99%, completely single-layer, ply 0.7-1.2 nm, sizes are hundreds of nm - several µm, excellent ... solution;Features: concentration 2mg/ml, thickness 0.7-1.2 nm, sizes are hundreds of nm - several apms m ... solution; Features: concentration 2mg/ml, ply 0.7-1.2 nm, size hundreds of nm - several apms m; ... : over 85% of them are distributed in 4 to 8 layer, 2-4 nm thick , hundreds of nm-dozens of ...