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

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Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films

We briefly address Landauer's Principle and some related issues in thermal demons. We show that an error-free Turing computer works in the zero-entropy limit, which proves Landauer's derivation incorrect. To have a physical logic gate, memory or information-engine, a few essential components necessary for the operation of these devices are often neglected, such as various aspects of control, damping and the fluctuation-dissipation theorem. We also point out that bit erasure is typically not needed or used for the functioning of computers or engines (except for secure erasure).

Critical remarks on Landauer's principle of erasure-dissipation: Including notes on Maxwell demons and Szilard engines

Pyrolysation kinetics and optical properties of polyimide foil

Electrochromic (e.c.) thinÃ¢â‚¬â€layer systems are well suited for the construction of optical devices with controllable, directed, reflectivity. The application of the e.c. effect to reflecting systems is even more efficient than its use in transparent devices since the light travels twice through the absorbing layer of the electrochromic material, which, in this case, is positioned between light source and reflector as well as reflector and receiver or observer. This application, in addition, offers a greater choice of materials for constructing the devices in that some of the layers of the e.c. system can be arranged behind the reflector or reflecting electrode and can thus be lightÃ¢â‚¬â€ absorbing, reflecting, or can have a variable transmittance, e.g. electrochromic materials can be used as storing layers. Several papers on the modes of construction of reflecting e.c. systems have appeared, 1-4 and the worldÃ¢â‚¬â€wide state of affairs was recently reported.

Reflectance control of automotive mirrors

Films of NixW1−x oxide with 0.05 ≤ x ≤ 0.53 were produced by reactive dc magnetron co-sputtering onto Si. Such films have documented electrochromism. Spectroscopic ellipsometry was used to extract ...

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Claes-Göran Granqvist

Papers

Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films

Critical remarks on Landauer's principle of erasure-dissipation: Including notes on Maxwell demons and Szilard engines

Pyrolysation kinetics and optical properties of polyimide foil

Reflectance control of automotive mirrors

Ellipsometrically determined optical properties of nickel-containing tungsten oxide thin films : Nanostructure inferred from effective medium theory