Materials Literature
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A method to study how proteins behave in solution has gotten a major upgrade. Researchers can now perform amide hydrogen-deuterium exchange mass spectrometry (HDXMS) without jury-rigging and can analyze reams of data rapidly, thanks to hardware and software the instrumentation company Waters developed for the techniqu…
Objetivo deste estudo foi preparar, caracterizar e estudar materiais tipo perovskita (Ba3BB‟2O9 e Ba2BB‟O6) como catalisadores para reacao de conversao de NOX em N2 e CO em CO2, buscando desenvolver conversores cataliticos alternativos. Os compostos foram preparados pelo metodo do precursor polimerico, calcinados a 50…
In this work, shape memory polymer neurovascular stent prototypes based on a previously proposed design were thermo-mechanically characterized to expand on the clinical efficacy of the device. The stents were made by dip-coating pins in a thermoplastic polymer solution and subsequently covalently crosslinking the poly…
This work deals with mimicking structural features found in nacre to fabricate composite materials as a tough ceramic material and to explore the mechanical properties. It is part of the work package D9 ôBiomimetic Ceramicsö of the Collaborative Research Centre 599 ôSustainable bioresorbable and permanent implants of…
Nuclear quadrupole resonance measurements have shown evidences that the heavy fermion compound CeRhIn$_5$ exhibits a coexistent phase with commensurate antiferromagnetism and d-wave superconductivity. In order to clarify the nature of the spin-excitations in the coexistent phase, we have applied the RPA method to an i…
The thesis is focused on the investigation of ligand exchange reactions of currently used MRI contrast agents (GdDTPA, GdBOPTA and Gd(DTPA-BMA)) with TTHA, and the physico-chemical characterization of gadolinium(III) complexes formed with novel macrocyclic polyamino polycarboxylate ligands (bp12c42- and L1= oxa-triaza…
International audience
Defects in graphene greatly affect its properties1-3. Radiation induced-defects may reduce the long-term survivability of graphene-based nano-devices. Here, we expose few-layer graphene to extreme ultraviolet (EUV, 13.5nm) radiation and show there is a power-dependent increase in defect density. We also show that expo…
International audience
The application of the factor analysis to the studies of the nonlinear elasticity of the piezoceramic materials is presented. All physical properties of these materials are strongly nonlinear dielectric, elastic and unelastic. Moreover, all these properties manifest creep. Simultaneous measurements of all these charac…
International audience
International audience
International audience
During hyperbaric decompression, the absolute ambient pressure is reducing; microbubbles may be generated from pre-existing gas nuclei. An accurate monitoring of the size and of the density of the bubble population will provide a valuable means to understand the nucleation and growth processes in tissues. In this aim,…
International audience
International audience
Este trabalho envolveu a sintese de um oxido com a estrutura perovskita (ABO3), o estanato de estroncio (SrSnO3), com estrutura ortorrombica com grupo espacial Pbnm, usando o metodo dos precursores polimericos. Este material apresenta aplicacoes como capacitores, sensores de gases como o CO, NOx, H2, umidade e atualme…
Realizovaný prototyp, byl ověřen pro zavedeni výroby modifikaci relativně běžně dostupných analytických vah, přinesl výraznou cenovou usporu v porovnani s nakupem komercniho zařizeni urceneho přimo na měřeni povrchove energie Washburnovou metodou. Metoda je založena na měřeni stoupani kapaliny do porů vzorku umistěneh…
Miniaturized multi-electrode arrays are MEMS devices that have found use as neural prosthetics (Neuro-MEMS). As implants they can interface with neurons as sensors or actuators and help compensate for loss of sensory input, motor control, or cognitive function. The micro-electrodes, studied here, were developed in-hou…
This proposal describes the proposed renewal of a theoretical research program on the structure and reactivity of molecules adsorbed on transition metal surfaces. A new direction of the work extends investigations to interfaces between solid surfaces, adsorbates and aqueous solutions and includes fundamental work on p…