The Department of Functional Materials and Catalysis kindly invites to the following talk:

Joel K. W. Yang, Engineering Product Development, Singapore University of Technology and Design

"3D Printing With Light For Light"

We develop high-resolution 3D printing processes based on two-photon polymerization lithography (TPL) to create 100-nm scale structures for controlling light [1]. We print structural colors from low-and-high-index dielectric materials [2] and integrate them with micro-optical elements for applications in optical security [3], holographic prints, and enhanced information content.

References
[1] Hao Wang, et al. "Two-Photon Polymerization Lithography for Optics and Photonics: Fundamentals, Materials, Technologies, and Applications", Adv. Funct. Mater. 2214211 (2023)
[2] Zhang, W., Min, J., Wang, H. et al. Printing of 3D photonic crystals in titania with complete bandgap across the visible spectrum. Nat. Nanotechnol. 19, 1813-1820 (2024)
[3] Hongtao Wang, et al. "Coloured vortex beams with incoherent white light illumination", Nat. Nanotechnol.18, 264-272 (2023)