| 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 |
Photoinhibition Aided Vat Photopolymerization (PinVPP) Additive Manufacturing |
| Author(s) |
Yue Zhang, Yousra Bensouda, Xiayun Zhao |
| On-Site Speaker (Planned) |
Yue Zhang |
| Abstract Scope |
Vat photopolymerization (VPP) among other additive manufacturing processes have a great potential to rapidly print complex 3D components out of a matrix of photo-curable resin. Photoinhibition has been demonstrated by leading research groups to be able to form a thicker deadzone that enables faster print and vertical micro-topography. However, the potential application of photoinhibition to improve VPP can be extended for lateral over-curing control. In general, photoinhibition aided VPP (PinVPP) employs two simultaneously projected optical masks for initiating and inhibiting the polymerization, respectively, at disparate wavelengths. In this work, we present two study cases of PinVPP – one general VPP print for polymeric parts and one VPP of ceramic slurry. Our initial experiment aims to understand the correlation of the two-wavelength exposure intensities with the inhibition zone thickness, the working curve thus the critical energy and depth of penetration, and the effects on print speed and geometric properties in PinVPP. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |