High-Resolution Printing of 3D Structures Using an Electrohydrodynamic Inkjet with Multiple Functional Inks

Byeong Wan An; Kukjoo Kim; Heejoo Lee; So-Yun Kim; Yulhui Shim; Dae-Young Lee; Jun Yeob Song; Jang-Ung Park

doi:10.1002/adma.201502092

High-Resolution Printing of 3D Structures Using an Electrohydrodynamic Inkjet with Multiple Functional Inks

Adv Mater. 2015 Aug 5;27(29):4322-8. doi: 10.1002/adma.201502092. Epub 2015 Jun 19.

Authors

Byeong Wan An¹, Kukjoo Kim¹, Heejoo Lee¹, So-Yun Kim¹, Yulhui Shim¹, Dae-Young Lee², Jun Yeob Song³, Jang-Ung Park¹

Affiliations

¹ School of Materials Science and Engineering, Wearable Electronics Research Group, Low-Dimensional Carbon Materials Research Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, Republic of Korea.
² Display Research Center, Samsung Display, Yongin-city, 446-711, Republic of Korea.
³ Department of Ultra Precision Machines and Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea.

PMID: 26095718
DOI: 10.1002/adma.201502092

Abstract

Electrohydrodynamic-inkjet-printed high-resolution complex 3D structures with multiple functional inks are demonstrated. Printed 3D structures can have a variety of fine patterns, such as vertical or helix-shaped pillars and straight or rounded walls, with high aspect ratios (greater than ≈50) and narrow diameters (≈0.7 μm). Furthermore, the formation of freestanding, bridge-like Ag wire structures on plastic substrates suggests substantial potentials as high-precision, flexible 3D interconnects.

Keywords: 3D printing; electrohydrodynamics; flexible electronics; inkjet; printed electronics.