Kim, Kibeom Oh, Sangmin Suh, Bong Lim Bae, Junghyun Namkoong, Myeong Kim, Yeonji Yoon, Jinsik Kim, Hyeli Lim, Sujeong Kim, In Soo Lee, In-Gyun Moon, Myoung-Woon Hur, Kahyun Park, Wook Cho, Hyesung 2025-01-20T02:00:41Z 2025-01-20T02:00:41Z 2025-01-17 2025-02 0935-9648 https://pubs.kist.re.kr/handle/201004/151607 Additive manufacturing has sought active and interactive means of creating predictable structures with diverse materials. Compared to such active manufacturing tools, current crystallization strategies remain in statistical and passive programs of crystals via macroscale thermodynamic controllers, commonly lacking active means to intervene in crystal growth in a spatiotemporal manner. Herein, a strategy toward active and interactive programming and reprogramming of crystals, realized by real-time tangible feedback on growing crystals by delicately controlling the degree of in-situ, localized photopolymerization of polymeric structures via additive manufacturing is presented. Using this strategy, crystals can be seeded, guided, and even reprogrammed in a supersaturated liquid resin. In principle, the localized formation of sparse polymeric networks within supercooled resins can induce density fluctuation to trigger seed nucleation instantaneously, whereas the formation of dense networks can lower molecules' mobilities to inhibit crystal growth. Assisted by these active triggers and deterministic procedural aspects in additive manufacturing, growing crystals can be tangibly interacted through programmed polymeric structures, strengthening deterministic characteristics in crystal growth. It is suggested that crystal growth can be programmable with deterministic hierarchies within the created crystal's morphologies within the background of inherent stochasticity in crystallization, launching an era of convolutional growth of crystals. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim In Situ Programmable, Active, and Interactive Crystallization by Localized Polymerization Article 10.1002/adma.202404092 1 Advanced Materials, v.37, no.6 Advanced Materials 37 6 N scie scopus 001383189400001 2-s2.0-85213032849 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article PATTERN-FORMATION CRYSTAL-GROWTH NUCLEATION COMPLEX DYNAMICS active crystallization additive manufacturing photopolymerization