Magnetic field responsive microspheres with tunable structural colors by controlled assembly of nanoparticles
Shenglong Shang, Kaiqi Zhang, Huifang Hu, Xiaoran Sun, Jie Liu, Yan‐Peng Ni, Ping Zhu
Abstract
@C magnetic particles were continuously prepared. The size of the microspheres decreases with the increase of PVA solution phase to ETPTA phase flow rate ratio. Furthermore, the microspheres with larger sizes more easily form close packed structures. Microspheres can be constrained in PVA to form a free-standing film after the evaporation of water in PVA solution. The PVA film could display tunable brilliant structural colors when an external magnetic field is applied. Moreover, microspheres with fixed structural colors can also be acquired by polymerizing microspheres under UV light under an external magnetic field.
Topics & Concepts
MicrosphereNanoparticleNanotechnologyStructural colorationMaterials scienceMagnetic nanoparticlesChemical engineeringOptoelectronicsPhotonic crystalEngineeringPhotonic Crystals and ApplicationsLiquid Crystal Research Advancements