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Pure Spin Current and Magnon Chemical Potential in a Nonequilibrium Magnetic Insulator

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Recent improvements on micro-thermocouple based SThM

Danick Briand

The scanning thermal microscope (SThM) has become a versatile tool for local surface temperature mapping or measuring thermal properties of solid materials. In this article, we present recent improvements in a SThM system, based on a micro-wire thermocoupl ...

Iop Publishing Ltd2017

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We describe the facilities for ultraviolet studies in the femtosecond to nanosecond time domain. These facilities consist of: i) a set-up for deep-ultraviolet spectroscopy in the 260-380 nm range in both pump and probe pulses for transient absorption/refle ...

Schweizerische Chemische Gesellschaft2017

Lattice vibrations are the microscopic mechanism responsible for a large, if not dominant, contribution to heat transport in crystalline insulators. These vibrations are described in terms of phonons, collective excitations (or quasiparticles) in the form ...

EPFL2016

Dynamic nuclear polarization at 40 kHz magic angle spinning

David Lyndon Emsley, Moreno Lelli, Pierrick Berruyer, David Benjamin Roger Antoine Gajan

DNP-enhanced solid-state NMR spectroscopy under magic angle spinning (MAS) is rapidly developing into a powerful analytical tool to investigate the structure of a wide range of solid materials, because it provides unsurpassed sensitivity gains. Most develo ...

Royal Society of Chemistry2016

Pressure-tuned Transport Properties of Novel Iron-based Superconductors and Topological Insulators

Andrea Pisoni

The majority of interactions in solids strongly depend on the interatomic distances. The application of pressure changes the lattice parameters and modifies the electronic and the phononic energy spectra of a material avoiding some of the undesirable effec ...

EPFL2016

Synthesis and characterization of an immobilizable photochemical molecular device for H-2-generation

Ulf Anders Hagfeldt

With Ru-II(bpyMeP)(2)tpphzPtCl(2) (4) a molecular photocatalyst has been synthesized for visible-light-driven H-2-evolution. It contains the ligand bpyMeP (4,4'-bis(diethyl-(methylene)-phosphonate)-2,2'-bipyridine) with phosphate ester groups as prec ...

Royal Society of Chemistry2015

Assessment of phase-field-crystal concepts using long-time molecular dynamics

William Curtin, Kristopher Learion Baker

The ability of the phase-field-crystal (PFC) model to quantitatively predict atomistic defect structures in crystalline solids is addressed. First, general aspects of the PFC model are discussed within the context of obtaining quantitative results in solid ...

American Physical Society2015

Extent-based Model Identification of Surface Catalytic Reaction Systems

Dominique Bonvin, Julien Léo Billeter, Sriniketh Srinivasan, Diogo Filipe Mateus Rodrigues

Identification of kinetic models and estimation of reaction and mass-transfer parameters is an important task for monitoring, control and optimization of industrial processes. A methodology called Extent-based Model Identification has been developed to sep ...

2014

Chemistry of Nitrosyliron Complexes Supported by a beta-Diketiminate Ligand

Florent Emmanuel Héroguel

Several nitrosyl complexes of Fe and Co have been prepared using the sterically hindered Ar-nacnac ligand (Ar-nacnac = anion of [(2,6- diisopropylphenyl)NC(Me)]2CH). The dinitrosyliron complexes [Fe(NO)2(Ar-nacnac)] (1) and (Bu4N)[Fe(NO) 2(Ar-nacnac)] (2) ...

American Chemical Society2011

Enantiopure, monodisperse alleno-acetylenic oligomers and cyclooligomers

Pablo Rivera Fuentes

Tert-butyl-substituted diethynylallenes (DEAs) are ideal for the construction of novel topologies because undesirable reactions on the cumulenic moiety are suppressed. The authors developed the asym. synthesis of two shape-persistent enantiopure alleno-ace ...

2011