QST Seminar - Additive Manufacturing at the Nanoscale

The performance of semiconductor integrated circuits can be improved through 3D integration of additional layers in the post-Moore era. However, 3D integration of optoelectronics remains a technological challenge. 3D printing has been emerging as a disruptive approach to manufacturing due to its simple, design-friendly manner. Over the past decades, scientists and engineers have continually developed methods for a diverse selection of materials, high precision and throughput that are essential for 3D optoelectronic devices, but so far this remains a great challenge. Here, I will present high-performance 3D nanoprinting techniques for advanced 3D optoelectronics. The research strategy consists of three steps: (1) development of advanced 3D printing techniques for functional semiconductor materials, (2) fundamental understanding of underlying nanodynamics (mass and energy transport and distribution at nanometer regime) for improvement of spatial resolution, (3) development of scalable printheads for wafer-scale nanoprinting. This research could enable a true manufacturing platform for next-generation 3D optoelectronic devices, making a great impact on interdisciplinary manufacturing and materials science fields such as stretchable electronics, photonics, and biomedical engineering.