| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Double-pulse Femtosecond Laser Sintering of Metal Nanoparticles on Flexible Substrate |
| Author(s) |
Janghan Park, Yaguo Wang |
| On-Site Speaker (Planned) |
Janghan Park |
| Abstract Scope |
Selective laser sintering (SLS) is a branch of additive manufacturing, utilizing powder beds and laser irradiation. SLS is a promising manufacturing method for flexible electronics because it does not require a high-temperature environment, which is not suitable for flexible substrates. Femtosecond laser (fs-laser) has received attention due to its ultra-short irradiance time which is less than electron-phonon coupling time, resulting in minimized heat-affected zones. Despite the advantages, it has been challenged to utilize fs-laser due to a high possibility of having ablation caused by hot electron blast effects. Here, we propose double-pulse fs-laser sintering which can reduce ablation by avoiding high peak power. We verified there is a suppression of metal nanoparticle ablation with double-pulse laser for spot sintering. We plan to further develop our study from spot sintering to line sintering on flexible substrate. Lowering surface roughness and enhanced electrical properties are expected with applying double-pulse sintering. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |