Fig. 2From: Improved gliotransmission by increasing intracellular Ca2+ via TRPV1 on multi-walled carbon nanotube platformsFunctional traits on MW-CNT substrates. A XPS spectra of the substrate before, during, and after functionalized CNT coating. B Contract angle measurements of CNT 100, CNT 1000, and poly-D-lysine (PDL). C Transmission and density profiles of the samples with or without coating. The inset photograph shows the photograph of 10 layers overlaid with each sampleBack to article page