Mathematical modelling of coalescence of viscous particles: An overview

ND Polychronopoulos, L Benos… - The Canadian Journal …, 2023 - Wiley Online Library
Viscous particles of polymer melts and glasses coalesce under the action of surface tension.
Resistance is due to viscosity, while inertia is not a contributing factor, with the Ohnesorge …

Direct Ink Writing for Electrochemical Device Fabrication: A Review of 3D-Printed Electrodes and Ink Rheology

ND Polychronopoulos, A Brouzgou - Catalysts, 2024 - mdpi.com
Three-dimensional printed electrodes seem to overcome many structural and operational
limitations compared to ones fabricated with conventional methods. Compared to other 3D …

A layer misalignment printing method for enhancement of mechanical performance in fused filament fabrication: Experiment and modelling

H Cai, J Xi, Y He, Y Wang, Y Chen - Journal of Manufacturing Processes, 2025 - Elsevier
There are big limitations in 3D-printed parts for engineering applications due to their weak
transverse mechanical properties when using fused filament fabrication (FFF). Accordingly …

Viscous coalescence of unequally sized spherical and cylindrical doublets

ND Polychronopoulos, LT Benos, CI Stergiou, IE Sarris… - Soft Matter, 2022 - pubs.rsc.org
A coalescence model is developed for pairs of unequally sized particles, assuming surface
tension driven flow opposed by viscosity. The flow field is extensional, biaxial for spheres …

Quantitative correlation between temperature difference and sintering neck length in material extrusion-based additive manufacturing

Y He, J Li, Q Zhang, H Ma, W Zhang, J Yang - Additive Manufacturing, 2024 - Elsevier
The performance of polymeric parts fabricated via material extrusion-based additive
manufacturing (MEAM) is significantly influenced by the sintering neck length between …

Contact rheological DEM model for visco-elastic powders during laser sintering

JE Alvarez, AH Nijkamp, H Cheng, S Luding… - Granular Matter, 2024 - Springer
Laser sintering is a widely used process for producing complex shapes from particulate
materials. However, understanding the complex interaction between the laser and particles …

Synergistic material extrusion 3D-printing using core–shell filaments containing polycarbonate-based material with different glass transition temperatures and …

F Peng, BD Vogt, M Cakmak - International Polymer Processing, 2022 - degruyter.com
The application of 3D printing of thermoplastics by Material Extrusion (MatEx) has commonly
been limited by their poor mechanical strength that results from voids and weak interfaces …

A Phase-Field-Micromechanics Study on the Microstructural Evolution during Viscous Sintering

X Dai, B Qian, A Kirshtein, Q Yang - arXiv preprint arXiv:2412.04050, 2024 - arxiv.org
In the manufacturing process of high-performance particulate materials, viscous sintering
plays a crucial role, particularly in fields such as polymer processing and additive …

An Atomistic Modeling Study of Electric Field Effect on Sintering Mechanisms of Zirconia

K Polifrone, C Delaney, MS Hasan, H Bayat… - TMS Annual Meeting & …, 2024 - Springer
This study explores the impact of electric field and temperature on flash sintering of zirconia
nanoparticles using molecular dynamics simulations. The findings suggest that the electric …