Microarrays are miniaturized arrays of immobilized substances used to detect binding events [8]. The concept of a microarray was first published in the late 1980s and was termed a “multianalyte immunoassay” for analyzing an array of antibody-antigen interactions [9]. The first scientific publication of microarrays that were not solely immunoassay-based was in 1991 and it presented a method on-spot synthesis of diverse chemicals, including peptides and a dinucleotide, using light-directed solid-phase chemistry with photolabile protecting groups [10]. Soon after, the use of microarrays was fueled by the development of DNA microarrays and the sequencing of various genomes, leading to a momentous increase in the number of publications per year that include “microarray” as a key term, as shown in Fig. 1.