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Pillar‐Deposition Particle Templating: A High‐Throughput Synthetic Route for Producing LithoParticles

We demonstrate “Pillar‐Deposition Particle Templating” (P‐DePT), a method for rapidly producing shape‐designed colloids, or LithoParticles. By contrast to previous approaches, P‐DePT is based on a solid template of pillars that define the particle cross‐sectional shapes permanently etched in positive relief. The pillars are coated with a sacrificial release layer and the desired material, whether organic, inorganic, or metal, or a combination thereof, is deposited onto the pillars. By simply dissolving the sacrificial layer, the particles can be released and the solid pillar template can be reused. Multiple plates can be used in parallel to increase production rates. We show an extremely high efficiency of release of the particles, greater than 99%, and a high degree of monodispersity, less than 5% polydispersity. This high‐throughput approach can generate microscale and nanoscale LithoParticles without expensive optical exposure systems.