Thermal annealing is a standard means of inducing self-assembly and grain coarsening in block copolymer thin films, yet is limited in its ability to control morphology and coarsening kinetics. This talk will discuss the use of photothermal methods for processing block copolymers using extreme temperatures, heating rates, and shear fields. Laser-based zone annealing and rapid thermal processing allow accelerated self-assembly and application of strong alignment forces. Appropriate selection of processing history can moreover control the pathway-dependent self-assembly. Combined with patterning (film edges and/or substrate chemistry), controlled processing can give rise to further control of morphology and orientation. Lastly, this talk will touch on recent efforts to include photothermal processing into an autonomous experimental context.

Photothermal processing of block copolymers

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.