Konkuk University – TechConnect Briefs

Nanosilver – Why It is Still So Hot?

Lem K.W., Haw J.R., Lee D.S., Iqbal Z., Salama A., Kurmaran S., Sund S., Curran S., Brumlik C., Choudhury A., Konkuk University, KR

At the present, we are focused on Korean consumer products because in our recent IP landscaping study, we have found that for all major patenting countries, Korea leads in nanosilver applications, with more than 1500 [...]

Role of Hard Segment Induced Nanosized Domain on Dilute Solution Properties of Ether Based Thermoplastic Polyurethanes

Lem K.W., Lee D.S., Haw J.R., Song G.S., Curran S., Sund S., Iqbal Z., Brumlik C., Konkuk University, KR

Many useful polyurethane components, such as films, are prepared from solution, in the form of dispersion, emulsion, or suspension. The ultimate properties of such films depend on the effect of nano scaled structures in the [...]

Role of Hard Segment Induced Nanosized Domain on Concentrated Solutions and Bulk Properties

Lem K.W., Lee D.S., Haw J.R., Song G.S., Curran S., Sund S., Iqbal Z., Brumlik C., Konkuk University, KR

When a film is cast from solution, the volume fraction of polymer in the film increases with increasing drying temperature and/or time. Its viscoelastic behavior transitions from more viscous (where G” > G’) in dilution [...]

Eco-efficiency measurement for Hydrogen as an alternative public transportation fuel

Cha K-H, Lee J-Y, Hur T., Konkuk University, KR

Urban governments are continually striving to enhance public transportation in ways that make them more environmental-friendly and improve the air quality. H2 and Fuel Cell Bus (FCB) offer one of the best ways to reduce [...]

Effect of Size on Properties of Nano-Structured Polymers –Transition from Macroscaling to Nanoscaling

Lem K.W., Haw J.R., Lee D.S., Brumlik C., Sund S., Curran S., Smith P., Brauer S., Schmidt D., Konkuk University, KR

The growth in investment on the effect of size in nanoscience and nanotechnology has been astounding. Among the $12.4B spent in 2006 worldwide Nanotechnology research funding (Lux Research, 2007), at least 50%, that is >$6B, [...]

Nano Silver – Why It is so Hot Now?

Lem K.W., Haw J.R., Lee D.S., Brumlik C., Sund S., Curran S., Smith P., Brauer S., Schmidt D., Konkuk University, KR

It has been known for centuries that silver has an antiseptic effect. In ancient times, many Greeks used silver vessels for drinking water storage. Koreans have also chosen silver to make their metal chopsticks. Recently, [...]

Fabrication of nanoscale nozzle for electrostatic field induced inkjet head and test of drop-on-demand operation

Nguyen V.D., Byun D., Bui S., Tran Q., Schrlau M., Bau H.H., Lee S., Konkuk University, KR

Printing technology is considered to be a key technology even in the fields of electronics, materials processing, and biotechnology. However there is a genuine need for nano-to-macro integration technology for printing. This paper presents the [...]

Oxygen plasma treated superhydrophobic nozzle for electrospray device

Lee S., Lee Y., Byun D., Tran S.B.Q., Kim S., Park B., Lee S., Lee Y., Konkuk University, KR

When the meniscus of liquid is subject to strong electric field, electric charge is induced on the meniscus and electrostatic force elongates the liquid to form a cone-jet. This electrospray phenomenon can be applied to [...]

Electrostatic Droplet Ejector with Monolithic Fabrication of Nozzle

Lee S-H., Byun D.Y., Ko H.S., Kim Y., Yang J.H., Han S.J., Son S.U., Oh J.T., Konkuk University, KR

This paper presents a novel mechanism of electrostatic micro droplet formation and ejection of fluid. Unlike conventional electrostatic jetting which requires a high operating voltage, we offer a, commercially viable, low operating voltage for droplet-on-demand [...]