다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applications

The richness of optical and electronic properties of graphene attracts enormous interest. Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability. So far, the main focus has been on fundamental physics and electronic devices. However, we believe its true potential lies in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultrawideband tunability. The rise of graphene in photonics and optoelectronics is shown by several recent results, ranging from solar cells and light-emitting devices to touch screens, photodetectors and ultrafast lasers. Here we review the state-of-the-art in this emerging field.

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Graphene photonics and optoelectronics

Silver nanoparticles as antimicrobial agent: a case study on E. coli as a model for Gram-negative bacteria

VO2 films were produced by reactive e-beam evaporation followed by annealing post-treatment. Electrical measurements demonstrated a semiconductor-metal transition at Tc ~ 60°C. Spectrophotometry showed that the near-infrared solar transmittance was reduced when Tc was exceeded while the luminous transmittance remained relatively unchanged. This thermochromism may be utilized for regulating the energy throughput of windows. Practical application hinges on improved transmittance and on Tc-depression. These goals can be accomplished to some extent by dielectric overlayers, as verified by measurements on SiO2-coated VO2 films.

Thermochromic VO 2 Films for Energy-Efficient Windows

Theoretical model for the optical properties of In2O3: Sn films in the 0.3–50 μm range

Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XV

The complex dielectric function of SiO0.6N0.2 coatings, produced by reactive electron-beam deposition, was evaluated in the 5–50-μm range. The composition was determined by Rutherford backscattering spectrometry. The IR optical properties of the films make them well suited for radiative cooling applications.

Claes-Göran Granqvist

Papers

Thermochromic VO 2 Films for Energy-Efficient Windows

Theoretical model for the optical properties of In2O3: Sn films in the 0.3–50 μm range

Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XV

Infrared optical properties of electron-beam evaporated silicon oxynitride films.

Proton conducting composite electrolytes based on antimonic acid