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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Investigating the Reliable Jetting of High-viscosity Polymers Using Piezo-driven Jet Valve
Author(s) Mahjabin Moon, Manas Vyas, Danielle Miller, Jonathan Boreyko, Christopher Williams
On-Site Speaker (Planned) Mahjabin Moon
Abstract Scope Inkjet-based material jetting additive manufacturing (MJT) enables high-resolution and high-throughput material deposition. However, stable droplet ejection of high-viscosity materials remains challenging due to difficulties in maintaining reliable jet formation and droplet detachment within the constraints of conventional piezoelectric drop-on-demand jet heads. In this study, the jetting behavior of truly high-viscosity (low-Z) materials is investigated using a piston-driven jet valve-based material jetting system. The inverse Ohnesorge number was used as a framework to evaluate printability by measuring viscosity and surface tension under printing-relevant conditions and correlating these properties with high-speed imaging of jet formation, ligament thinning, and droplet detachment. The results show that a combination of controlled heating, tuned pulse duration, and high-energy pulsed piston-driven actuation enables stable jetting of materials that are traditionally difficult to print, thereby demonstrating the potential of emerging piston-driven valve-based jetting systems for reliable deposition of high-viscosity materials.
Proceedings Inclusion? Undecided

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