Chungbuk National University – TechConnect Briefs

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 [...]

Infrared laser precipitation of ZnAl2O4 nanocrystals doped with Eu3+ and Yb3+ ions and efficient upconversion emission

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

We present a novel and simple method to enable spatially selective ZnAl2O4 nanocrystal formation on the surface of glass. Zinc Aluminate, well-known as a wide band gap semiconductor, has been widely used as high temperature [...]

Biological synthesis of copper nanoparticles using plant extract

Lee G., Lee H.J., Lee G., Lee H.J., Jang N.R., Yun J.H., Song J.Y., Kim B.S., Chungbuk National University, KR

Copper nanoparticles were biologically synthesized using plant leaf extract as reducing agent. On treatment of aqueous solutions of CuSO4•5H2O with leaf extract (Magnolia), stable copper nanoparticles were formed. UV-vis spectroscopy was used to monitor the [...]