Concept

Gemstone

Related publications (30)

Direct protein crystallization on ultrathin membranes for diffraction measurements at X-ray free-electron lasers

Henning Paul-Julius Stahlberg, Christian David

A new era of protein crystallography started when X-ray free-electron lasers (XFELs) came into operation, as these provide an intense source of X-rays that facilitates data collection in the 'iffract-before-destroy' regime. In typical experiments, crystals ...

International Union of Crystallography (IUCr)2017

Parametric Experimental Study and Design of Experiment Modelling of Sapphire Grinding

Daniel Sage

This study investigates and models the grinding process of single crystal sapphire. Five parameters: the wheel speed, the feed speed, the vertical feed, the ultrasonic assistance and the crystallographic direction were considered via a design of experiment ...

Elsevier2017

Temperature dependence of the thermal boundary conductance in Ag–3Si/diamond composites

Ludger Weber

The effect of oxygen termination of diamond surfaces on the interface thermal conductance between Ag–3Si and diamonds is investigated in dependence of temperature by measuring thermal conductivity in the temperature range from 4 K up to ambient. Composites ...

Elsevier2015

Hydrothermally-treated Na-X as efficient adsorbents for butadiene removal

Lioubov Kiwi, Jeremy Luterbacher, Florent Emmanuel Héroguel, Guillaume Bastien Baur, Jonathan Spring

An efficient adsorbent for butadiene was synthesized via soft hydrothermal treatment (2 h in boiling water followed by 1 h calcination at 573 K) of industrial Na-X. The adsorption capacity of the zeolite was studied in the low concentration range (20–300 p ...

Elsevier Science Sa2015

Defects in bilayer silica and graphene: common trends in diverse hexagonal two-dimensional systems

Oleg Yazyev

By combining first-principles and classical force field calculations with aberration-corrected high-resolution transmission electron microscopy experiments, we study the morphology and energetics of point and extended defects in hexagonal bilayer silica an ...

Nature Publishing Group2013

Synthesis of self-pillared zeolite nanosheets by repetitive branching

Kumar Varoon Agrawal, Xu Zhang

Hierarchical zeolites are a class of microporous catalysts and adsorbents that also contain mesopores, which allow for fast transport of bulky molecules and thereby enable improved performance in petrochemical and biomass processing. We used repetitive bra ...

2012

A Ga2O3 underlayer as an isomorphic template for ultrathin hematite films toward efficient photoelectrochemical water splitting

Michael Graetzel, Kevin Sivula, Nicolas Tétreault, Florian Le Formal, Maurin Cornuz, Jérémie Minh-Châu Brillet, Takashi Hisatomi

Hematite photoanodes for photoelectrochemical (PEC) water splitting are often fabricated as extremely-thin films to minimize charge recombination because of the short diffusion lengths of photoexcited carriers. However, poor crystallinity caused by structu ...

2012

UV absorption of coherent and nano-porous titanium oxide films obtained by PECVD

Nasibeh Pouransari

Polymeric materials suffer from chain degradation due to the absorption of ultraviolet (UV) light. Nevertheless, many polymers show excellent optical transmission properties in the visible range and are suitable replacements for glass. Coating of polymers ...

2010

M-Plane GaN Grown on m-Plane Sapphire by Hydride Vapor Phase Epitaxy

Nicolas Grandjean, Denis Martin, Tiankai Zhu

M-plane GaN epilayers have been directly grown on m-plane sapphire substrates by hydride vapor phase epitaxy using a low temperature GaN nucleation layer. The m-plane GaN surface is optically smooth and mirror-like, with rms roughness similar to 2.0 nm (5 ...

2009

Tracking Articulated Bodies using Generalized Expectation Maximization

Pascal Fua, Andrea Fossati

A generalized expectation maximization (GEM) algorithm is used to retrieve the pose of a person from a monocular video sequence shot with a moving camera. After embedding the set of possible poses in a low dimensional space using principal component analys ...

2008

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