“…Nanocolloidal assembly, in particular (also called nanosphere lithography [15]), holds great promise for the bottom-up fabrication of periodic nanostructures [4,5]. Applications include catalysis [16], optoelectronics [17], surface-enhanced Raman spectroscopy (SERS) templates [18], photonics [19,20], photovoltaics [21], chemical sensors [22], biosensors [23], superhydrophobic surfaces [24], self-cleaning coatings [25], drug and gene delivery [26].…”