MATHEMATICAL MODEL OF NICKEL-GRAPHENE COMPOSITE INKS FOR JETTING PROPERTIES IN INKJET PRINTING

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Published: Sep 30, 2024
DOI: https://doi.org/10.22452/mjs.vol43no3.8
Keywords:
Drop formation Inkjet Printing COMSOL Multiphysics Composite ink Nickel-Graphene ink

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Neha Thakur
Department of Electronics and Communication Engineering, CHRIST (Deemed to be University), Kumbalgodu, Bengaluru - 560074, Karnataka, INDIA.
https://orcid.org/0000-0002-5505-8926
Parasuraman Swaminathan
Dept. of Metallurgical and Materials Engineering, Indian Institute of Technology, Madras, Tamil Nadu, INDIA.
Hari Murthy
Dept. of Electronics and Communication Engineering, CHRIST (Deemed to be University), Bengaluru, Karnataka, INDIA.

Abstract

The droplet formation process in inkjet printing is studied numerically and verified through a simulation model. The droplet formation process decides the printing quality of the coating, and a mathematical model is developed to understand the complete process from droplet formation to detachment. The Navier-Stokes equation is used to mathematically derive the droplet radius (rnumerical). COMSOL multiphysics is used for simulation and the radius (rsimulation) is calculated from the droplet mass. The rnumerical and rsimulation are compared for inks containing nickel, graphene, and nickel-graphene composite ink it is observed that the composite ink radiuses have the lowest difference (rsimulation - rnumerical =0.085µm). A droplet is formed at 1.47mm from the nozzle inlet, for nickel-graphene ink, and after 1.5mm for other pristine inks. The results are verified through Z number, velocity profile, and droplet mass. The droplet formation observed from the velocity profile is earliest at 120µs. It is seen that a stable droplet is generated at 100µs for nickel-graphene ink and at 200 µs for individual inks.

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How to Cite
Thakur, N., Parasuraman Swaminathan, & Hari Murthy. (2024). MATHEMATICAL MODEL OF NICKEL-GRAPHENE COMPOSITE INKS FOR JETTING PROPERTIES IN INKJET PRINTING. Malaysian Journal of Science, 43(3), 59–67. https://doi.org/10.22452/mjs.vol43no3.8
Issue
Vol 43 No 3 (2024): September 2024
Section
Original Articles

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