B4: 3D Structure–Property Correlation in Structurally Colored Supraparticle Assemblies
3D Structure–Property Correlation in Structurally Colored Supraparticle Assemblies
This doctoral project focuses on the controlled fabrication and correlative 3D characterization of hierarchically structured, optically active supraparticle assemblies. The candidate will generate colloidal clusters through confined self-assembly in emulsion droplets using microfluidics, forming well-defined building blocks from polymer or silica nanoparticles. These clusters will be assembled into two- and three-dimensional architectures with tunable optical properties arising from structural color. The research will establish workflows combining microspectroscopy, electron tomography, and X-ray nano/micro-CT to correlate structural order with photonic response. Structural coloration will be tailored by coating the assemblies with high-refractive-index materials such as TiO₂. Through close collaboration with microscopy and materials projects, the candidate will explore how nanoscale structure controls macroscopic color phenomena. The results will provide design principles for bio-inspired, non-toxic, and dynamically tunable photonic materials.
