KR – Page 4 – TechConnect Briefs

Thermoelectric temperature sensors by printing with a simple office inkjet printer

Chae H., Jung M., Soum V., Lee J., Kim H., Kim T., Cheong H., Kim H., Kim T., Jeon S., Kwon O-S, Shin K., Sogang University, KR

Recently, printing temperature sensors have been significantly demanded in the paper electronics, such as electronic skin for robots, polymer chain reaction for DNA amplification. Here we present printing thermoelectric temperature sensors by using a simple [...]

The characterization and reductive degradation behavior study of bioreducible crosslinked polypropylenimine dendrimers for gene delivery systems

Lee G.J., Ryu K., Kim T.I., Seoul National University, KR

Polypropylenimine (PPI) dendrimers and their derivatives have been used for gene delivery because of their properties such as cationic charge, equivalent surface functionalities, and internal cavities [1–4]. However, high generation PPIs made high cytotoxicity induced [...]

Self-assembling peptide dimers with multifunctionalities for gene delivery systems

Ryu K., Lee G.J., Kim T.I., Seoul National University, KR

Peptides have been used in various biomedical fields including gene and drug delivery systems [1]. There are many peptide sequences which can interact with cellular molecules or components. These biological interactions of peptide represented many [...]

In-situ generation of radicals in photocatalytic reactor with TiO2 nanotube plate

Pak D., Ku H., Lee Y., Seoul National University of Science and Technolog, KR

In-situ generation of radicals in photocatalytic reactor with TiO2 nanotube plate Daewon Pak, Haemin Ku, Yongho Lee Graduate School of Energy and Environment, Seoul National University of Science and Technology, 232 Gongneungro, Nowon-gu, Seoul, Korea, [...]

Development of a highly durable anode support for solid oxide fuel cell

Mehran M.T., Song R-H, Lim T-H, Lee J.W., Lee S.B., Lee J.W., Lee S.B., Park S-J, Korea Institute of Energy Research, KR

Solid oxide fuel cells are well known to be highly efficient and clean energy conversion devices for stationary and portable power generation. The ceramics based SOFC’s operate at high temperatures (>700 °C) and the durability [...]

Design of a heat-recirculating combustor for a thermophotovoltaic system

Kim H.K., Kim T.-Y., Kim H.K., Kim T.-Y., Kwon O.C., School of Mechanical Engineering Sungkyunkwan University, KR

Recently, the demand for light, fast-charging and long-lasting portable power sources to replace current lithium-ion batteries has been increased because of development of portable electronic devices such as laptop computers, cellular phones and signal equipments. [...]

Preparation and Characterization of Highly Dispersive Acrylic Acid/Styrene Submicrocapsules by using Miniemulsion Copolymerization

Ghim H-D, Hwang Y., Kim M.K., Kyungpook National University, KR

This study reports the preparation and characterization of acrylic acid/styrene (AA/St) submicrocapsule having high value of zeta potential by using phytoncide oil as a model material. AA/St submicrocapsules were prepared by miniemulsion copolymerization with 1,3-diphenyl-2-propanone, [...]

Silver nanoparticle-coated silica hybrid particles as anti-biofouling agent on filter materials

Woo K., Ko Y-S, Park S.H., Lee J-H., Hwang J., Korea Insitute of Science and Technology, KR

Pathogenic bacteria and viruses cause health problems and occasionally, lead to pandemic. Thus, global demand for clean air and safe water is increasing. Filtering systems have been utilized to provide clean air and water. However, [...]

Laser precipitation of Eu and Yb codoped CaF2 nanocrystals on the surface of glass and emission characteristics

Kim D.S., Bae C-H, Lim K-S, Chungbuk National University, KR

We precipitated spatially selective Eu/Yb doped CaF2 nanocrystals on the surface of glass by CO2 laser irradiation. Because of low phonon energy of CaF2, we observed several times enhancements in down-shift emission under 365 nm [...]

Design and Simulation on Nanoelectromechanical bi-layer Graphene Nanoribbon Device with Graphene Nanoflake Shuttle

Kwon O-K., Kang J-W, Lee J-H., Semyung University, KR

Nanoelectromechanical (NEM) switches are similar to conventional semiconductor switches in that they can be used as relays, transistors, logic devices and sensors, and they are promising devices for use in mechanical computing, data storage, and [...]