Low‐cost inkjet printing of thin‐film mullite structures

Abstract

A commodity inkjet printer was modified to print layered ceramic structures on stiff glass substrates, using inks in the form of sols with mullite stoichiometry. The sol composition was optimized in terms of ink viscosity, surface tension, and evaporation properties. The ink was then fed into a multi-nozzle commodity printer head and deposited by ink-jetting. Thin lines without bulges with a thickness of ∼1.8 μm with concave profile and a line width of ∼100 μm were successfully printed on fused silica substrates. The presence of mullite was confirmed by Raman spectroscopy and XRD after sintering of printed structures.

In-Depth Rheological Characterization of Tungsten Sol-Gel Inks for Inkjet Printing

“…In 1997, Atkinson and coworkers reported one of the first examples of inkjet printouts using sol-gel inks [21]. Since then, the research interest in using sol-gel materials for inkjet printing production of metal oxides has increased, which is demonstrated by numerous scientific publications over the past decade [19,[22][23][24][25]. Furthermore, the printability of the tungsten sol using inkjet printing has been successfully demonstrated [15].…”