0000000000624471

AUTHOR

Claudia Richter

showing 2 related works from this author

Local structural investigation of hafnia-zirconia polymorphs in powders and thin films by X-ray absorption spectroscopy

2019

Björn Matthey (Fraunhofer IKTS, Dresden) is acknowledged for providing HfO2 and ZrO2 powders on short notice after DESY’s renowned customs office punished us. Parts of this research were carried out at Petra III at DESY, a member of the Helmholtz Association (HGF). The experiments on single Si:HfO2 thin film samples were performed at the CLAESS beamline at ALBA Synchrotron with the collaboration of ALBA staff. We would like to thank Edmund Welter for assistance (in using beamline P65) and DESY for enabling this research for proposal no. 20160591 and for travel support. T.S. acknowledges the German Research Foundation (DFG) for funding this work in the frame of the project “Inferox” (project…

Ferroelectrics670Materials sciencePolymers and PlasticsAbsorption spectroscopyexafsExtended X-ray absorption fine structure X-ray absorption near edge structure Ferroelectrics Hafnium oxide Zirconium oxide02 engineering and technologydopants01 natural sciencesferroelectric propertieshafnium oxideTetragonal crystal systemformer soviet-unionzirconium oxideddc:6700103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Zirconium oxideX-ray absorption near edge structureThin filmx-ray absorption near edge structureExtended X-ray absorption fine structureHafnium oxideErweiterte Röntgenabsorptionsfeinstruktur Röntgenabsorptionsstruktur in Randnähe Ferroelektrika Hafniumoxid Zirkoniumoxid010302 applied physicsX-ray absorption spectroscopybiologyExtended X-ray absorption fine structureferroelectricsMetals and Alloyshfo2021001 nanoscience & nanotechnologyHafniabiology.organism_classificationXANESstabilizationdielectricsElectronic Optical and Magnetic Materialsoxygen-ion conductorselectrochemistryextended x-ray absorption fine structureChemical physicsCeramics and Compositesinterface0210 nano-technologyMonoclinic crystal systemActa Materialia
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Long term follow up after percutaneous closure of PFO in 357 patients with paradoxical embolism: Difference in occlusion systems and influence of atr…

2009

Abstract Background Percutaneous transcatheter closure of patent foramen ovale (PFO) in cryptogenic stroke or TIA is an alternative to medical therapy especially in patients with atrial septal aneurysm (ASA). The differences in time to complete occlusion for various closure devices in PFO alone and PFO plus ASA are of natural interest. Methods and results Between January, 1st 1998 and November, 30th 2006 percutaneous PFO closure was performed in 357 patients with a history of ≥1 paradoxical embolism using three different devices: Amplatzer PFO-( n =199), Starflex-( n =48) and Helex Occluder ( n =110). All patients were assigned to a post-interventional protocol with contrast-enhanced transe…

AdultMalemedicine.medical_specialtyRight-to-left shuntForamen secundumForamen Ovale PatentProsthesis ImplantationPostoperative ComplicationsParadoxical embolismInternal medicinemedicine.arteryOcclusionHeart SeptummedicineHumansProspective StudiesHeart AneurysmAgedbusiness.industryProstheses and ImplantsMiddle Agedmedicine.diseaseHeart septumSurgeryTreatment Outcomemedicine.anatomical_structureEmbolismEchocardiographyPatent foramen ovaleCardiologyFemaleCardiology and Cardiovascular MedicinebusinessEmbolism ParadoxicalFollow-Up StudiesInteratrial septumInternational Journal of Cardiology
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