“…There are several approaches by which one can achieve this, including the direct growth of 1D or 2D systems or the controlled etching of heterostructures. Some examples of direct growth techniques of III-V and II-VI 1D and 0D structures are the growth of microcrystallites [7,8], growth on patterned substrates [9,10], cleaved edge overgrowth [11,12], strain modulation by using sputtered stressors [13,14] and self-organized growth [15,16]. The controlled etching techniques are all based on a lithography process to create an etch pattern followed by an etching process.…”