Soltau, Jakob

[["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","128"],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2022-06-07T06:45:02Z"],["dc.date.available","2022-06-07T06:45:02Z"],["dc.date.issued","2022"],["dc.description.abstract","We present a novel approach to x-ray microscopy based on a multilayer zone plate which is positioned\r\nbehind a sample similar to an objective lens. However, unlike transmission x-ray microscopy, we do not\r\ncontent ourselves with a sharp intensity image; instead, we incorporate the multilayer zone plate transfer\r\nfunction directly in an iterative phase retrieval scheme to exploit the large diffraction angles of the small\r\nlayers. The presence of multiple diffraction orders, which is conventionally a nuisance, now comes as an\r\nadvantage for the reconstruction and photon efficiency. In a first experiment, we achieve sub-10-nm\r\nresolution and a quantitative phase contrast."],["dc.identifier.doi","10.1103/PhysRevLett.128.223901"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108716"],["dc.language.iso","en"],["dc.relation","SFB 1456 | Cluster C | C03: Intensity correlations in diffraction experiments: convolution, reconstruction and information"],["dc.relation","SFB 1456: Mathematik des Experiments: Die Herausforderung indirekter Messungen in den Naturwissenschaften"],["dc.relation.issn","0031-9007"],["dc.relation.issn","1079-7114"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","CC BY 4.0"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","Coherent Diffractive Imaging with Diffractive Optics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1266"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Synchrotron Radiation"],["dc.bibliographiccitation.lastpage","1271"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Döring, Florian"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Rösner, Benedikt"],["dc.contributor.author","Beye, Martin"],["dc.contributor.author","Busse, Philipp"],["dc.contributor.author","Kubiček, Katharina"],["dc.contributor.author","Glaser, Leif"],["dc.contributor.author","Miedema, Piter S."],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Raiser, Dirk"],["dc.contributor.author","Guzenko, Vitaliy A."],["dc.contributor.author","Szabadics, Lukas"],["dc.contributor.author","Kochanneck, Leif"],["dc.contributor.author","Baumung, Max"],["dc.contributor.author","Buck, Jens"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Techert, Simone"],["dc.contributor.author","David, Christian"],["dc.date.accessioned","2020-12-10T18:25:59Z"],["dc.date.available","2020-12-10T18:25:59Z"],["dc.date.issued","2019"],["dc.description.abstract","X-ray absorption spectroscopy (XAS) is a powerful element-specific technique that allows the study of structural and chemical properties of matter. Often an indirect method is used to access the X-ray absorption (XA). This work demonstrates a new XAS implementation that is based on off-axis transmission Fresnel zone plates to obtain the XA spectrum of La0.6Sr0.4MnO3 by analysis of three emission lines simultaneously at the detector, namely the O 2p-1s, Mn 3s-2p and Mn 3d-2p transitions. This scheme allows the simultaneous measurement of an integrated total fluorescence yield and the partial fluorescence yields (PFY) of the Mn 3s-2p and Mn 3d-2p transitions when scanning the Mn L-edge. In addition to this, the reduction in O fluorescence provides another measure for absorption often referred to as the inverse partial fluorescence yield (IPFY). Among these different methods to measure XA, the Mn 3s PFY and IPFY deviate the least from the true XA spectra due to the negligible influence of selection rules on the decay channel. Other advantages of this new scheme are the potential to strongly increase the efficiency and throughput compared with similar measurements using conventional gratings and to increase the signal-to-noise of the XA spectra as compared with a photodiode. The ability to record undistorted bulk XA spectra at high flux is crucial for future in situ spectroscopy experiments on complex materials."],["dc.identifier.doi","10.1107/S1600577519003898"],["dc.identifier.issn","1600-5775"],["dc.identifier.pmid","31274453"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16305"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75901"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation","SFB 1073 | Topical Area C | C05 Kontrolle Elektronen-getriebener Chemie durch Interkalation"],["dc.relation.eissn","1600-5775"],["dc.relation.issn","1600-5775"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.relation.workinggroup","RG Techert (Structural Dynamics in Chemical Systems)"],["dc.title","A zone-plate-based two-color spectrometer for indirect X-ray absorption spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","818"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Optica"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Vassholz, Malte"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2021-05-27T14:48:38Z"],["dc.date.available","2021-05-27T14:48:38Z"],["dc.date.issued","2021"],["dc.description.abstract","X-ray in-line holography is well suited for three-dimensional imaging, since it covers a large field of view without the necessity of scanning. However, its resolution does not extend to the range covered by coherent diffractive imaging or ptychography. In this work, we show full-field holographic x-ray imaging based on cone-beam illumination, beyond the resolution limit given by the cone-beam numerical aperture. Image information encoded in far-field diffraction and in holographic self-interference is treated in a common reconstruction scheme, without the usual empty beam correction step of in-line holography. An illumination profile tailored by waveguide optics and exactly known by prior probe retrieval is shown to be sufficient for solving the phase problem. The approach paves the way toward high-resolution and dose-efficient x-ray tomography, well suited for the current upgrades of synchrotron radiation sources to diffraction-limited storage rings."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.1364/OPTICA.420060"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84769"],["dc.language.iso","en"],["dc.relation.issn","2334-2536"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray imaging"],["dc.title","In-line holography with hard x-rays at sub-15  nm resolution"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1173"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Synchrotron Radiation"],["dc.bibliographiccitation.lastpage","1180"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Robisch, Anna-Lena"],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Eckermann, Marina"],["dc.contributor.author","Kalbfleisch, Sebastian"],["dc.contributor.author","Carbone, Dina"],["dc.contributor.author","Johansson, Ulf"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2020-12-10T18:25:59Z"],["dc.date.available","2020-12-10T18:25:59Z"],["dc.date.issued","2019"],["dc.description.abstract","The focusing and coherence properties of the NanoMAX Kirkpatrick–Baez mirror system at the fourth-generation MAX IV synchrotron in Lund have been characterized. The direct measurement of nano-focused X-ray beams is possible by scanning of an X-ray waveguide, serving basically as an ultra-thin slit. In quasi-coherent operation, beam sizes of down to 56 nm (FWHM, horizontal direction) can be achieved. Comparing measured Airy-like fringe patterns with simulations, the degree of coherence"],["dc.identifier.doi","10.1107/S1600577519003886"],["dc.identifier.issn","1600-5775"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16741"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75900"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.issn","1600-5775"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.subject.gro","x-ray optics"],["dc.title","Focus characterization of the NanoMAX Kirkpatrick–Baez mirror system"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","012049"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Physics. Conference Series"],["dc.bibliographiccitation.volume","849"],["dc.contributor.affiliation","Osterhoff, Markus;"],["dc.contributor.affiliation","Eberl, Christian;"],["dc.contributor.affiliation","Soltau, Jakob;"],["dc.contributor.affiliation","Krebs, Hans-Ulrich;"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Eberl, Christian"],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.date.accessioned","2020-01-31T12:29:55Z"],["dc.date.available","2020-01-31T12:29:55Z"],["dc.date.issued","2017"],["dc.date.updated","2022-03-11T06:44:43Z"],["dc.description.abstract","With Pulsed Laser Deposition, Multilayer Zone Plates can be fabricated to focus hard x-ray beams into 2D spots smaller than 10 nm. To put these optics into use for imaging applications, we have commissioned a new dedicated sample tower as a high-resolution module for the GINIX instrument, stationed at the P10 beamline at PETRA III. Here we summarise the motorisation and show first imaging benchmark results obtained with a \"traditional\" Fresnel Zone Plate. The first 2D continuous STXM scan using the new EigerX 4M detector at full 750 Hz speed is shown: a field of view of roughly about 1 μm squared has been recorded with 255 × 255 images within 96 seconds."],["dc.identifier.doi","10.1088/1742-6596/849/1/012049"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62920"],["dc.language.iso","en"],["dc.relation","SFB 755: Nanoscale Photonic Imaging"],["dc.relation.eissn","1742-6596"],["dc.relation.issn","1742-6588"],["dc.relation.issn","1742-6596"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.rights.uri","http://creativecommons.org/licenses/by/3.0/"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","Preparing for hard x-ray microscopy with Multilayer Zone Plates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","7"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","American Journal of Respiratory and Critical Care Medicine"],["dc.bibliographiccitation.lastpage","16"],["dc.bibliographiccitation.volume","181"],["dc.contributor.author","Aguilar-Pimentel, J. A."],["dc.contributor.author","Alessandrini, Francesca"],["dc.contributor.author","Huster, K. M."],["dc.contributor.author","Jakob, T."],["dc.contributor.author","Schulz, H."],["dc.contributor.author","Behrendt, H."],["dc.contributor.author","Ring, J."],["dc.contributor.author","de Angelis, M. H."],["dc.contributor.author","Busch, D. H."],["dc.contributor.author","Mempel, M."],["dc.contributor.author","Ollert, M."],["dc.date.accessioned","2011-04-21T15:37:51Z"],["dc.date.accessioned","2021-10-27T13:10:49Z"],["dc.date.available","2011-04-21T15:37:51Z"],["dc.date.available","2021-10-27T13:10:49Z"],["dc.date.issued","2009"],["dc.description.abstract","Rationale: Studies in humans and rodents have indicated a causative role for CD81 T cells in IgE-mediated allergic inflammation, but their function is still controversial. Objectives: Toanalyze the role of allergen-specificCD81Tcells during the development of allergic airway inflammation in two parallel but diverging outcome models. Methods: We used H2-Kb SIINFEKL (OVA257–264) multimers to analyze induction, natural distribution, and phenotype of allergen-specificCD81 T cells in amurine C57BL/6 model of ovalbumin (OVA)-induced allergic airway inflammation using low-dose or high-dose OVA sensitization. Measurements and Main Results: The low-dose protocol was characterized by a significant induction of total and OVA-specific IgE, eosinophilic airway inflammation, IL-4 levels in bronchoalveolar lavage fluid. And significant alterations in lung function. The high dose protocol was characterizedbya significant reductionof theallergicphenotype. Using OVA257–264 H2-Kb multimers, we observed lung and airway infiltrating OVA-specific CD81 T cells showing an effector/effectormemory phenotype. The high-dose protocol caused significantly higher infiltration of allergen-specific CD81 cells to the airways and enhanced their cytotoxicity. Adoptive transferwith CD81 T cells from transgenic OT-I mice to TAP12/2 or wild-type mice showed their migration to the lungs and TAP1-dependent proliferation after OVAaerosol exposure. TAP12/2 mice defective in CD81 T cells showed exacerbated symptoms in the low-dose sensitizationmodel. Conclusions: Allergen-specific CD81 T cells seem to protect from allergic inflammation in the lungs. Their number, which is dependent on the sensitization dose, appears to be a critical predictor for the severity of the allergic phenotype."],["dc.identifier.doi","10.1164/rccm.200902-0190OC"],["dc.identifier.fs","575523"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6286"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91536"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Specific CD8 T Cells in IgE-mediated Allergy Correlate with Allergen Dose and Allergic Phenotype"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.seriesnr","29"],["dc.contributor.author","Soltau, Jakob"],["dc.date.accessioned","2022-08-09T09:04:18Z"],["dc.date.available","2022-08-09T09:04:18Z"],["dc.date.issued","2022"],["dc.description.abstract","X-ray microscopy is used to study the structure, dynamics and bulk properties of matter with high spatial resolutions. It is widely applied, from physics \r\nand chemistry to material and life sciences. In the past two decades, progress in X-ray microscopy was driven either by improvements in X-ray optics or by \r\nimprovements in the image reconstruction by using algorithms as computational lenses. In this work both approaches are combined to exploit the advantages of \r\nX-ray imaging with a large numerical aperture and the advantages of coherent image reconstruction. It is shown that a combined X-ray microscope using \r\nboth, advanced optics and algorithms, is neither limited by flawed optics nor by constraints imposed by reconstruction algorithms, which enables to go beyond \r\ncurrent limits in resolution and applications.\r\nThe thesis is structured in four parts. In the first part hard X-ray lenses, so called multilayer zone plates, are simulated to investigate volume diffraction effects \r\nwithin the multilayer structure, and to study the potential for smaller focus sizes and higher efficiencies. In the second part, the multilayer zone plates are \r\ncharacterized and implemented in an X-ray microscope. In the third part, a new imaging scheme is presented, which combines in-line holography and coherent \r\ndiffractive imaging. This method overcomes the current resolution limit of in-line holography and can achieve super-resolution with respect to the numerical \r\naperture of the illuminating beam. Finally, in the fourth part a multilayer zone plate is used as an objective lens with a known transfer function in a novel \r\ncoherent full-field imaging experiment based on iterative phase retrieval, for high resolution and quantitative contrast."],["dc.format.extent","210"],["dc.identifier.doi","10.17875/gup2022-2037"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112691"],["dc.identifier.urn","urn:nbn:de:gbv:7-isbn-978-3-86395-553-3-6"],["dc.language.iso","en"],["dc.publisher","Universitätsverlag Göttingen"],["dc.publisher.place","Göttingen"],["dc.relation.crisseries","Göttingen Series in X-Ray Physics"],["dc.relation.workinggroup","RG Techert (Structural Dynamics in Chemical Systems)"],["dc.rights","CC BY-SA 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-sa/4.0/deed.de"],["dc.title","Hard X-ray Microscopy Enhanced by Coherent Image Reconstruction"],["dc.type","book"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]