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http://dx.doi.org/10.7736/KSPE.2014.31.1.83

Implementation of High Performance Micro Electrode Pattern Using High Viscosity Conductive Ink Patterning Technique  

Ko, Jeong Beom (Department of Electronic Engineering, Jeju National Univ.)
Kim, Hyung Chan (Department of Electronic Engineering, Jeju National Univ.)
Dang, Hyun Woo (Department of Electronic Engineering, Jeju National Univ.)
Yang, Young Jin (Department of Mechatronics Engineering, Jeju National Univ.)
Choi, Kyung Hyun (Department of Mechatronics Engineering, Jeju National Univ.)
Doh, Yang Hoi (Department of Electronic Engineering, Jeju National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.31, no.1, 2014 , pp. 83-90 More about this Journal
Abstract
EHD (electro-hydro-dynamics) patterning was performed under atmospheric pressure at room temperature in a single step. The drop diameter smaller than nozzle diameter and applied high viscosity conductive ink in EHD patterning method provide a clear advantage over the piezo and thermal inkjet printing techniques. The micro electrode pattern was printed by continuous EHD patterning method using 3-type control parameters (input voltage, patterning speed, nozzle pressure). High viscosity (1000cps) conductive ink with 75wt% of silver nanoparticles was used. EHD cone type nozzle having an internal diameter of $50{\mu}m$ was used for experimentation. EHD jetting mode by input voltage and applied 1st order linear regression in stable jet mode was analyzed. The stable jet was achieved at the amplitude of 1.4~1.8 kV. $10{\mu}m$ micro electrode pattern was created at optimized parameters (input voltage 1.6kV, patterning speed 25mm/sec and nozzle pressure -2.3kPa).
Keywords
EHD Patterning; Micro Electrode; High Viscosity Conductive Ink;
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