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

Films of lithiated vanadium pentoxide (LiyV2O5) are of interest for ion storage in electrochromic “smart windows” and in lithium battery technology. In this paper we study optical absorption of LiyV2O5 films in the 0.3 < λ < 2.5 μm wavelength range, encompassing visible light and solar radiation, in relation to the micro-structure.

Structure and Optical Absorption of Li y V 2 O 5 Thin Films

Iron oxide films were made by chemical vapour deposition and annealing post-treatment. Optical and d.c. electrical measurements probed the Fe2O3 → Fe3O4 transition. It could be understood as a thermally activated process, with an activation energy equal to the band-gap of Fe2O3. A.c. electrical data gave evidence against the transition being percolative.

Conductivity threshold and kinetics of the phase transition in Fe2O3-Fe3O4 thin films made by chemical vapour deposition

Gold nanoparticle films are of interest in several branches of science and technology, and accurate sample characterization is needed but technically demanding We prepared such films by DC magnetron sputtering and recorded their mass thickness by Rutherford backscattering spectroscopy The geometric thickness dg—from the substrate to the tops of the nanoparticles—was obtained by scanning electron microscopy (SEM) combined with image analysis as well as by atomic force microscopy (AFM) The various techniques yielded an internally consistent characterization of the films In particular, very similar results for dg were obtained by SEM with image analysis and by AFM

http://uu.diva-portal.org/smash/get/diva2:752865/FULLTEXT01.pdf

Characterization of gold nanoparticle films: Rutherford backscattering spectroscopy, scanning electron microscopy with image analysis, and atomic force microscopy

The first guest host (GH) display was suggested in 1968 by Heilmeier and Zanoni . They proposed dissolving pleochroic dye molecules in a nematic liquid crystal (LC). A pleochroic dye is characterized by unequal absorption of two perpendicularly polarized beams of incident light. This anisotropic absorption can be described by two absorption constants. In the case of linear dichroism these absorption cons- tants are related to directions of polarization, respectively parallel and perpen- dicular to the transition moment of the dye molecule.

Liquid crystal guest host devices and their use as light shutters

Fluctuation-Enhanced Chemical/Biological Sensing and Prompt Identification of Bacteria by Sensing of Phage-Triggered Ion Cascade (SEPTIC)

Claes-Göran Granqvist

Papers

Structure and Optical Absorption of Li y V 2 O 5 Thin Films

Conductivity threshold and kinetics of the phase transition in Fe2O3-Fe3O4 thin films made by chemical vapour deposition

Characterization of gold nanoparticle films: Rutherford backscattering spectroscopy, scanning electron microscopy with image analysis, and atomic force microscopy

Liquid crystal guest host devices and their use as light shutters

Fluctuation-Enhanced Chemical/Biological Sensing and Prompt Identification of Bacteria by Sensing of Phage-Triggered Ion Cascade (SEPTIC)