| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Off the Grid: Re-defining Design Resolution in Inkjet 3D-printing for Sub-droplet Position Control and Facile Geometry Improvement |
| Author(s) |
Oliver Nelson-Dummett, Geoffrey Rivers, Negar Gilani, Marco Simonelli, Christopher J. Tuck, Richard J.M. Hague, Ricky D. Wildman, Lyudmila Turyanska |
| On-Site Speaker (Planned) |
Oliver Nelson-Dummett |
| Abstract Scope |
Inkjet 3D printing (IJ3DP) is critical technology for next generation multi-material or graded-material printed devices. IJ3DP patterns mainly utilise per-layer bitmaps, traditionally selecting resolution based on droplet size, coupling droplet size and position. This traditional method results in pixelation and discontinuity in small features, and limited control of edge definition and layer flatness. Therefore, we introduce “Off the Grid” (‘OtG’): new pattern design methods which decouple droplet size from droplet positioning, compatible with existing 3DIJP systems and applicable to 3D structure optimisation. We demonstrate: printing fine features one droplet wide with reductions in geometry error, forming smooth continuous paths where the traditional pattern methodology did not; up to 10× increase of feature position control (Traditional: 60 μm increments, minimum gap 45μm; OtG: 6 μm increments, minimum gap 5μm); adjustable print resolution across a patterned layer; 2.5× reduction in surface waviness and control of surface texturing. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |