Talk "3D Printing With Light For Light"

12.06.2025

Talk by Joel K. W. Yang, "3D Printing With Light For Light", June, 20.

 

The Department of Functional Materials and Catalysis kindly invites you to a talk

Joel K. W. Yang, "3D Printing With Light For Light"

  • When: Friday, June 20, 2-4 pm
  • Where: Kleiner Hörsaal 3 / HS3, Halbstock, Boltzmanngasse 1
  • Host: Assoz. Prof. Jia Min Chin, PhD

Abstract: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.

[Fig. 1] Fig. 1 Gyroid photonic crystals of TiO2 in the shape of a butterfly that exhibit optical chirality under visible light, with minimum feature size of ~100 nm [2].

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)

Abstract available for download here.

We look forward to a inspiring event and professional exchange!