Researchers, Developers and Staffs
Jungmyoung  JU Jungmyoung JU

Research Themes

A study on electrostatic deposition method using nanoparticles geenerated by atomizer

Research matter and its Result

In the electrospray deposition (ESD) method, atomized tiny droplets are dried up to nano-sized particles and deposited on the substrate by electrostatic force. Thus, compared with inkjet patterning, high resolution patterning is possible since coffee stain effect is not generated during evaporation process. ESD is high-resolution as well as low-damage process to the samples, thus bio-macromolecules and organic materials can be used. Also ESD can fabricate nanofiber using macromolecule materials so that it has been used to fabrics and filter applications. ESD is expected to be a general-purpose deposition method, which is possible to fabricate high resolution pattern ranged from micro to nanometer.
It has been proved that bio-microarray can be fabricated by electrospray deposition for bio-chip applications. In the fields of organic materials, ESD was hard to adopt since dried nanoparticles generate pin-holes. To cope with this problem, a new method for fabricating micropatterns of semiconductive organic thin films with surface roughness below 1nm is proposed, using electrospray deposition and a dual-solvent technique. The basic concept is that nanoparticles are deposited on the target substrate just before they become completely dry, by adding a solvent that has an evaporation speed relatively lower than that of the original solution.

Selected Publications

Lise T de Jonge, Jungmyoung Ju, Sander C Leeuwenburgh, Yutaka Yamagata, Toshiro Higuchi, Joop G Wolke, Kozo Inoue, John A Jansen
A Comparative Study of Two Advanced Spraying Techniques for the Deposition of Biologically Active Enzyme Coatings onto Bone-substituting Implants
Thin solid films, vol 518, issue 19, 30 july 2010, pp. 5615-5621

Jungmyoung Ju, Yutaka Yamagata and Toshiro Higuchi
Thin film fabrication method for organic light emitting diode using electrospray deposition
Advanced Materials, Vol. 21 Issue 43, pp. 4343-4347, 2009/7

Jungmyoung Ju, Yutaka Yamagata, Hitoshi Ohmori, Toshiro Higuchi
Standing Wave Type Surface Acoustic Wave Atomizer, Sensors and Actuators A
Physical, Volume 147, Issue 2, 3, pp. 570-575, October, 2008

Jungmyoung Ju, Yutaka Yamagata, Hitoshi Ohmori, Toshiro Higuchi
High frequency surface acoustic wave atomizer, Sensors and Actuators A
Physical, Volumes 145-146, pp. 437-441, July-August, 2008

Selected Publications Page