Sungkyunkwan University – TechConnect Briefs

Formation and Modeling of Droplet Ejection for Electrohydrodynamic Inkjet Printing

Choi J., Lee S., Son S.U., Sungkyunkwan University, KR

EHD(Electrohydrodynamic) inkjet printing based on electrospray and EHD discharging for tiny droplet/jet is known to be able to generate higher resolution and higher aspect ratio of patterns than the conventional inkjet printing(Lee, 2014). EHD inkjet [...]

Performance of a heat-recirculating combustor for thermophotovoltaic power devices with photonic crystal structure

Kim H.K., Kim T.-Y., Kim H.K., Kim T.-Y., Kwon O.C., Sungkyunkwan University, KR

The demand for high-performance portable power sources is recently enhanced due to the increasing use of electronic devices. Portable power systems using the combustion of hydrocarbon fuels have been considered as a novel alternative to [...]

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

Haque S., Lee S., Son S., Sungkyunkwan University, KR

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 [...]

Fishbone Pattern Phenomena on a Non-Conductive Substrate in Electrohydrodynamic Discharging

Son S., Lee S., Choi J., Haque S., Sungkyunkwan University, KR

The intense electric field concentrated on the meniscus at a nozzle orifice is able to trigger the electro-hydrodynamic (EHD) discharging of tiny droplets or jets [1-2]. The electric field distribution along the pathway from the [...]

Reduction-sensitive hyaluronic acid nanoparticles for targeted intracellular deliery of doxorubicin

Saravanakumar G., Shin J.M., Um W., Park J.H., Sungkyunkwan University, KR

Disulfide-containing HA dodecyl conjugates (HA-SS-DDTs) were synthesized using the facile thiol-exchange reaction as the carrier for intracellular delivery of doxorubicin (DOX). Owing to its amphiphilicity, HA-SS-DDT could form self-assembled nanoparticles in an aqueous condition. The [...]

Repeated Duplication in EHD Line Patterning on a Non-Conductive Substrate Based on Controlling the Polarity of Applied Voltages

Son S., Lee S., Choi J., Sungkyunkwan University, KR

This paper addresses the EHD printing of a high aspect ratio of metal lines as a means of forming a high conductivity of metal lines. As stated earlier, EHD printing is advantageous over conventional inkjet [...]

Properties of nonpremixed ammonia-substituted hydrogen-air flames

Joo J.M., Um D.H., Kwon O.C., Sungkyunkwan University, KR

The effects of ammonia (NH3) substitution on the extinction and nitrogen oxide (NOx) emissions of nonpremixed hydrogen (H2)-air flames at normal temperature and pressure were experimentally studied to evaluate the potential of partial NH3 substitution [...]

Properties of nonpremixed ammonia-substituted hydrogen-air flames

Joo J.M., Um D.H., Kwon O.C., Sungkyunkwan University, KR

The effects of ammonia (NH3) substitution on the extinction and nitrogen oxide (NOx) emissions of nonpremixed hydrogen (H2)-air flames at normal temperature and pressure were experimentally studied to evaluate the potential of partial NH3 substitution [...]

Robust thin spin-coated silver films with polymer thin layers for SPR image sensor applications

Son J.-H., Cho Y-J, Lee M.H., Sungkyunkwan University, KR

We fabricated thin silver films with thicknesses of 20 nm, 40 nm, and 60 nm on a prism using a spin coating method for SPR image sensor module applications. An aqueous silver ionic complex solution [...]

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 [...]