[Retracted] Preparation of High-Refractive-Index Flexible Nanoparticle Laser Engraving Materials and Micro-Nano Sculpture Art

Table 3

Unit refractive index of different particle elements.

Element	Weight to volume ratio (mg/v)	Unit index of refraction
C	23.19	5.02
Cu	1.67	11.32
Zn	3.78	9.09
ZnO	5.33	12.01