Colloidal self-assembly to 3D nanolithography

From Two-Dimensional Colloidal Self-Assembly to Three-Dimensional Nanolithography.
C.-H. Chang, L. Tian, W. R. Hesse, H. Gao, H. J. Choi, J.-G. Kim, M. Siddiqui, and G. Barbastathis
Nano Lett. 11, 2533 (2011)