Presentation Information
[9p-N302-7]Innovative 3D Printing Using Light-Driven Droplets
〇Shoji Maruo1 (1.Yokohama Natl. Univ.)
Keywords:
3D printing,two-photon lithography,droplet
Two-photon lithography is widely used in photonics, biomedical engineering, and micromachines. While multi-material printing has enabled advanced devices such as microlenses and cell scaffolds, conventional methods rely on microfluidic systems for material exchange, resulting in long processing times and significant material waste. To overcome these limitations, we propose new multi-material printing methods that eliminate microfluidic channels. Our approach uses remotely controlled droplets placed on a substrate, manipulated via localized heating with infrared light or laser irradiation, allowing efficient material exchange with minimal waste by reusing uncured materials. Large-area fabrication beyond droplet size is also demonstrated on centimeter-scale substrates. Additionally, to enable the handling of water-based materials such as bio-inks, we develop a magnetic actuation method by incorporating iron particles and controlling droplets with permanent magnets. This enables 3D printing of hydrogels for biomedical applications.