Episode 8: Knots tied within microstructure of foam

MRS Bulletin Materials News Podcast · Jul 17, 2023 · 4m

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Widi Moestopo, a former graduate student in Julia Greer’s laboratory at the California Institute of Technology (Caltech) and now a postdoc at Lawrence Livermore National Laboratory about their work incorporating microknots in architected materials. Using two-photon lithography, Moestopo scans a resin with a laser to create and shape a three-dimensional (3D) object within foam. Moestopo then used a solvent to wash away the remaining, unconverted resin. In this way, he sculpted the knots out of the resin, rather than tying the knots…