Block Copolymer Self-Assembly Directed Hierarchically Structured Materials from Nonequilibrium Transient Laser Heating

摘要: We highlight two recent approaches operating far from equilibrium for the synthesis of hierarchical porous thin film materials by coupling block copolymer-directed self-assembly with transient laser heating. In first copolymer-induced writing heating experiments, or B-WRITE, an all-organic copolymer–resols hybrid is heated submillisecond carbon dioxide irradiation, directly generating 3D mesoporous continuous resin structures and shapes. Harnessing highly unique properties under conditions, in second approach templating coupled nanosecond pulsed excimer annealing to generate complementary crystalline silicon nanostructures. The underlying structure formation mechanisms such laser-induced organic inorganic nanostructured are discussed, emphasizing that nonequilibrium nature these opens up vast new processing windows beyon...