About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Printed Electronics and Additive Manufacturing: Advanced Functional Materials, Processing Concepts, and Emerging Applications
|
Presentation Title |
Nanoscale Printing of Metals via Localized Photoreduction |
Author(s) |
Jungho Choi, Sourabh Saha |
On-Site Speaker (Planned) |
Sourabh Saha |
Abstract Scope |
Light driven chemical reduction (i.e., photoreduction) of metal ions into solid clusters of metal atoms has been well known for more than a century in the art of film photography. However, deterministic nanoscale printing of metals at low costs and high rates is notoriously difficult via photoreduction. Current approaches are expensive because they rely on expensive high-intensity femtosecond (fs) lasers, and they are slow because the underlying crystallization phenomenon is understood to be slow and stochastic. Here, we have overcome these limitations by performing photoreduction with low-intensity superluminescent light. We demonstrate printing of features as small as 500 nm with light intensities 10 billion times lower than fs lasers, and at short 100 ms time scales. This reduces the cost of printing nanoscale metal by more than 10 times and increases the rate by 100 times. Therefore, this work can enable the scalable printing of small-scale electronics. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Electronic Materials, Nanotechnology |