TY - GEN
T1 - The effect of rheological property of ink on the generation of inkjet droplet
AU - Yoo, Hansol
AU - Kim, Chongyoup
PY - 2012
Y1 - 2012
N2 - In inkjet printing the ink is usually a suspension of particles in liquid. Suspensions usually show shear-thinning characteristics. To understand the jetting and drop generation mechanism of suspensions we investigated similar systems for which the rheological properties are well characterized. As "inks," Newtonian fluids (water-glycerin mixture) and shear-thinning fluids (xanthan gum solutions in the Newtonian fluid) were prepared. The diameter and velocity of droplet were measured while varying waveform of bipolar shape to the piezoelectric inkjet head and the effects of the rheological properties were examined. The result shows that the impinging velocity is strongly affected by zero-shear and extensional viscosities while the drop size is dependent on infinite shear viscosity.
AB - In inkjet printing the ink is usually a suspension of particles in liquid. Suspensions usually show shear-thinning characteristics. To understand the jetting and drop generation mechanism of suspensions we investigated similar systems for which the rheological properties are well characterized. As "inks," Newtonian fluids (water-glycerin mixture) and shear-thinning fluids (xanthan gum solutions in the Newtonian fluid) were prepared. The diameter and velocity of droplet were measured while varying waveform of bipolar shape to the piezoelectric inkjet head and the effects of the rheological properties were examined. The result shows that the impinging velocity is strongly affected by zero-shear and extensional viscosities while the drop size is dependent on infinite shear viscosity.
KW - Extensional viscosity
KW - Infinite shear viscosity
KW - Shear thinning
KW - Zero-shear viscosity
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M3 - Conference contribution
AN - SCOPUS:84864936374
SN - 9781466562752
T3 - Technical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
SP - 251
EP - 254
BT - Nanotechnology 2012
T2 - Nanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
Y2 - 18 June 2012 through 21 June 2012
ER -