N-Doped Graphene Quantum Dot Nanoparticle Synthesis of Optical Active Thermal Stable Polyurea Nanocomposites Using Polybutadiene Chain Modification

Table 3

AFM analysis data of PUr and PUr-NGQD nanocomposites.

Sample	50% distrib. (nm)	Ra (nm)	Rmax (nm)	Rmin (nm)	Rp (nm)	Rv (nm)
PUr	476	1968	2287	1538	333.6	−358.8
PUr-NGQD	80	102	108	92	108.9	−21

50% distrib.: height distribution of 50% of detected surface particles. R_a: average roughness. R_max: maximum height profile roughness. R_min: minimum height profile roughness. R_p: maximum profile peak height. R_v: maximum profile valley depth.