Advanced Manufacturing, Electronics and Microsystems: TechConnect Briefs 2015Advanced Manufacturing, Electronics and Microsystems TechConnect Briefs 2015

Inkjet Design, Materials & Fabrication Chapter 10

Effect of Charge Accumulation and Dielectric Polarization on EHD Patterning on Non-Conductive Substrates

S. Haque, S. Lee, S. Son
SungKyunKwan University, Korea

pp. 396 - 399

Keywords: EHD patterning, charge accumulation, dielectric polarization

Despite its merits in printing fine patterns, finer than the nozzle diameter used, and in employing high viscosity of ink [1], Electro-Hydro-Dynamic (EHD) printing is yet to be widely adopted due mainly to the charge induced disturbances in patterning, especially, on non-conductive substrates. This paper investigates how the charges accumulated on and the dielectric polarizations induced in a non-conductive substrate affect the quality of EHD patterning by distorting electric field vectors and, thus, scattering the satellites/sprays generated at the meniscus tip [2, 3].