Fig. 2: Structural prototypes and chemical elements used for the generation of new 2D materials.
From: An artificial intelligence-aided virtual screening recipe for two-dimensional materials discovery

a Top and side views of prototypes as grouped by unit-cell compositions. b Periodic table of chemical elements showing A-type positively charged ions (cations) in color blue, B-type negatively charged ions (anions) in red, and elements that have been excluded as gray.