| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mishra, S.
Max Planck Institute for Chemical Physics of Solids
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2024Precursor-employed sol-gel synthesis of mesostructured fluorinated titania for acid catalysis
- 2023Single-track thermal analysis of laser powder bed fusion process: Parametric solution through physics-informed neural networkscitations
- 2023Spin-dependent charge transmission through chiral 2T3N self-assembled monolayer on Aucitations
- 2023In situ X-ray diffraction study of a TiO2 nanopowder Spark Plasma Sintering under very high pressurecitations
- 2023In situ X-ray diffraction study of a TiO2 nanopowder Spark Plasma Sintering under very high pressurecitations
- 2023The Lorenz ratio as a guide to scattering contributions to Planckian transport
- 2023A spatially resolved optical method to measure thermal diffusivitycitations
- 2023Steering Large Magnetic Exchange Coupling in Nanographenes near the Closed-Shell to Open-Shell Transitioncitations
- 2020Precursor Mediated Synthesis of Binary and Ternary Metal Chalcogenide Nanoparticles for Photocatalytic Applications
- 2020Tailoring Vanadium Dioxide Film Orientation Using Nanosheets:A Combined Microscopy, Diffraction, Transport, and Soft X-Ray in Transmission Studycitations
- 2020Quest to enhance up-conversion efficiency: a comparison of anhydrous vs. hydrous synthesis of NaGdF4: Yb3+ and Tm3+ nanoparticlescitations
- 2019Facile precursor-mediated synthesis of binary and ternary G11 metal selenide-based nanomaterials for improved photocatalysis
- 2019Sol-gel preparation of doped-metal oxide nanostructures for the thermoelectric conversion of energy
- 2019Sol-gel preparation of doped-metal oxide nanostructures for the thermoelectric conversion of energy
- 2019Precursor-directed synthesis of upconverting LiYF4:Yb3+, Tm3+ nanoparticles and their composites designed for near infra-red driven photocatalysis
- 2019Synthesis of Binary and Ternary Metal Selenide Nanoparticles for Photocatalytic Applications: A Study of Molecule-to-Nanoparticles Transformation Mechanism
- 2018A precursor-directed synthesis of Cu2-xSe nanoparticles and its composites with TiO2 for enhanced photocatalytic activity
- 2018A precursor-directed synthesis of inorganic nanomaterials for photocatalytic applications
- 2017Oxide Thermoelectrics Nanostructured by Spinodal Decomposition
- 2017Oxide Thermoelectrics Nanostructured by Spinodal Decomposition
- 2017Development of intra- and inter-granular nanometric architectures in metal oxides for the thermoelectric conversion of energy.
- 2017Development of intra- and inter-granular nanometric architectures in metal oxides for the thermoelectric conversion of energy.
- 2017Development of thermoelectric metal oxides : the case of doped TiO2
- 2017Development of thermoelectric metal oxides : the case of doped TiO2
- 2017Tensile and flexural properties of hybrid graphene oxide/epoxy carbon fibre reinforced composites.citations
- 2016divergent reactivity of selenoethers with metal reagents: formation of molecular complexes vs. metal selenide nanoparticles
- 2016A Facile Molecular Precursor-based Synthesis of Ag2Se Nanoparticles and Its Composites with TiO2 for Enhanced Photocatalytic Activitycitations
- 2016asymmetric ligand approach to design volatile molecular precursors for the al-fe intermetallic catalyst
- 2014Single source precursors for heterometallic fluoride nanomaterials
- 2012Novel heterometal-organic complexes as first single source precursors for up-converting NaY(Ln)F-4 (Ln = Yb, Er, Tm) nanomaterialscitations
- 2012Heterometallic, Hybrid, Heavy Main-Group Iodometallates Containing Lanthanide Complexes: Template Synthesis, Structures, Thermal, Optical, Luminescent and Magnetic Propertiescitations
- 2010Dimethyl selenide complexes of copper, gallium and indium halides as potential precursors for selenium-containing chalcopyrite semiconducting materialscitations
- 2009Homoleptic gallium(III) and indium(III) aminoalkoxides as precursors for sol-gel routes to metal oxide nanomaterialscitations
- 2005Plant fibers as reinforcement for green composites
Places of action
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article
A spatially resolved optical method to measure thermal diffusivity
Abstract
We describe an optical method to directly measure the position-dependent thermal diffusivity of reflective single crystal samples across a broad range of temperatures for condensed matter physics research. Two laser beams are used, one as a source to locally modulate the sample temperature, and the other as a probe of sample reflectivity, which is a function of the modulated temperature. Thermal diffusivity is obtained from the phase delay between source and probe signals. We combine this technique with a microscope setup in an optical cryostat, in which the sample is placed on a three-axis piezo-stage, allowing for spatially resolved measurements. Furthermore, we demonstrate experimentally and mathematically that isotropic in-plane diffusivity can be obtained when overlapping the two laser beams instead of separating them in the traditional way, which further enhances the spatial resolution to a micron scale, especially valuable when studying inhomogeneous or multidomain samples. We discuss in detail the experimental conditions under which this technique is valuable and demonstrate its performance on two stoichiometric bilayer ruthenates: Sr 3 Ru 2 O 7 and Ca 3 Ru 2 O 7 . The spatial resolution allowed us to study the diffusivity in single domains of the latter, and we uncovered a temperature-dependent in-plane diffusivity anisotropy. Finally, we used the enhanced spatial resolution enabled by overlapping the two beams to measure the temperature-dependent diffusivity of Ti-doped Ca 3 Ru 2 O 7 , which exhibits a metal–insulator transition. We observed large variations of transition temperature over the same sample, originating from doping inhomogeneity and pointing to the power of spatially resolved techniques in accessing inherent properties.