Cho, YongDeok Park, Sung Hun Kwon, Min Kim, Hyeon Ho Huh, Ji-Hyeok Lee, Seungwoo 2024-03-28T08:00:15Z 2024-03-28T08:00:15Z 2024-03-28 2024-06 0935-9648 https://pubs.kist.re.kr/handle/201004/149542 A general guiding principle for colloidal crystallization is to tame the attractive enthalpy such that it slightly overwhelms the repulsive interaction. As-synthesized colloids are generally designed to retain a strong repulsive potential for the high stability of suspensions, encoding appropriate attractive potentials into colloids has been key to their crystallization. Despite the myriad of interparticle attractions for colloidal crystallization, the van der Waals (vdW) force remains unexplored. Here, it is shown that the implementation of gold cores into silica colloids and the resulting vdW force can reconfigure the pair potential well depth to the optimal range between -1 and -4 k(B)T at tens of nanometer-scale colloidal distances. As such, colloidal crystals with a distinct liquid gap can be formed, which is evidenced by photonic bandgap-based diffractive colorization. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Van der Waals Colloidal Crystals Article 10.1002/adma.202312748 1 Advanced Materials, v.36, no.23 Advanced Materials 36 23 N scie scopus 001184393000001 2-s2.0-85187516354 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article NANOPARTICLE SUPERLATTICES PHOTONIC STRUCTURES OPTICAL-PROPERTIES CLUSTERS COLOR colloids gold nanoparticles pair potentials photonic crystals van der Waals forces