Lee S. – Page 2 – TechConnect Briefs

FineMetalLine Patterning on Hydrophilic Non-Conductive SubstratesBased on EHD Printing withLaser Sintering

Son S., Lee S., Kim Y.J., An K., Choi J., Sungkyunkwan University, KR

In this paper, we report the successful EHD printing and laser sintering of a 5 um width of metal line patterns, with the line thickness of over 340 nm, on a hydrophilic non-conductive glass substrate [...]

High Aspect Ratio EHD Printing with High Viscosity Ink Ejection

Choi J., Lee S., Kim Y.J., Son S.U., An K.C., Sungkyunkwan University, KR

EHD (Electro-hydro-dynamics) printing technology, one of the printing technologies based on EHD discharging theory, can be patterning of high resolution and high aspect ratio compared to conventional inkjet printing systems. We have been investigating to [...]

Far-infrared Radiation Properties of Poly(vinyl alcohol) Nanofibrous Membranes Containing Germanium and Silicon Dioxide

Chung J., Lee S., Yonsei University, KR

Far-infrared radiation effect and antibacterial properties were introduced in PVA nanofibrous membrane using germanium (Ge) and silicon dioxide (SiO2). Composite fibers containing Ge and SiO2 were fabricated at various concentrations of Ge and/or SiO2 using [...]

Nanostructural Changes in Surface of Stainless Steel Archwires Combined with Orthodontic Conventional and Self-Ligating Brackets

Choi S., Joo H., Cheong Y., Lee S., Kim S., Park H.K., Park Y.-G., Park H.K., Park Y.-G., Kyung Hee University, KR

It is well-known that the frictional force between the archwire (AW) and the bracket reduces the efficiency of orthodontic treatment. It is affected not only by geometry of self-ligating brackets but also by physical changes [...]

Array-Nozzle EHD Print Head and its Drop-on-Demand Experimentation

Son S., Lee S., Lee W.H., Kim Y.J., An K., Choi J., Sin J., Lee S., Lee W.H., Wijesundara M., Stephanou H.E., Sungkyunkwan University, KR

EHD (electrohydrodynamics) printing has recently attracted attention for micro/nano size pattern devices due to it can make very small droplet than nozzle diameter and possibility of the use of various ink such as including metal, [...]

Fracture-induced polymeric grating structures

Lin C.C., Yang F., Chin J.W., Sung L., Lee S., National Tsing Hua Univesity, TW

Fracture-induced structure (FIS)1 is found in the polymeric thin film sandwiched between two relatively rigid flat plates by inserting a razor blade at one edge. FIS is a potential candidate to be a low-cost and [...]

Increased Sensitivity of Carbon Nanotube Sensors by Forming Stable and Low Resistance CNT/metal Electrode

Jeon D., Park D., Lee S., Seoul National University, KR

We fabricated a rigid and low resistance contact for CNT by utilizing a eutectic mixture melting at low temperature as an electrode. The fabrication was done by depositing a eutectic Au/Al thin film on the [...]

Study of the phenomenon of meniscus deformation and ejection by pulse voltage and frequency in drop-on-demand EHD printing

Son S., An K., Kim Y.J., Choi J., Lee S., Sungkyunkwan University, KR

EHD (electrohydrodynamics) printing has recently attracted attention for micro/nano size pattern devices due to it can make very small droplet than nozzle diameter and possibility of the use of various ink such as including metal, [...]

The Investigation of Electrostatic Induced Inkjet Printing System for the Ejection of a Stable Micro/Nano Droplet

Choi J., Kim Y.J., Son S.U., Chul An K., Lee S., Sungkyunkwan University, KR

Inkjet printing technology has recently attracted considerable attention for a simple fabrication and advanced pattering process during the past decade. In order to manufacture advanced inkjet printing technology, my team has alternatively proposed and investigated [...]

Design and Fabrication of the Sensor for Measuring the Human Bladder Volume

Lee S., Jun S., Kim S., Kim S., Choi B., Sogang University, KR

This paper presents the result of study on the development of a bladder volume sensor. Previous studies focus on the development of an inner bladder pressure sensor. But there are some difficulties about the measurement [...]