Amorphous Materials

World's Thinnest Quarz Glass 
blue = Si, white = O
Phys. Rev. Lett. 109, 106101 (2012)

Cu-Zr Metallic Glass, Cu64Zr36 
organge = Cu, gray = Zr
Atomic model kindly provided by Yunwei Mao and Prof. Ju Li
Prog. Mater. Sci. 56, 379 (2011)