Self-assembly in granular materials is challenging due to particle collisions in the air, leading to disordered, jammed configurations, unlike fluidic systems where density and symmetry can be controlled. The authors report embedding anti repellent structures to enable organized self-assembly by capturing and holding kinetic particles, thus allowing for programmable density and symmetry in granular materials.
- Junghyun Bae
- Jinsik Yoon
- Wook Park