Salditt, Tim

[["dc.bibliographiccitation.firstpage","336"],["dc.bibliographiccitation.issue","S2"],["dc.bibliographiccitation.journal","Microscopy and Microanalysis"],["dc.bibliographiccitation.lastpage","339"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Wittmeier, Andrew"],["dc.contributor.author","Cassini, Chiara"],["dc.contributor.author","Hémonnot, Clément Y. J."],["dc.contributor.author","Weinhausen, Britta"],["dc.contributor.author","Bernhardt, Marten"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Köster, Sarah"],["dc.date.accessioned","2020-04-23T14:35:13Z"],["dc.date.available","2020-04-23T14:35:13Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1017/S1431927618013983"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/64328"],["dc.language.iso","en"],["dc.relation.eissn","1435-8115"],["dc.relation.issn","1431-9276"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Köster (Cellular Biophysics)"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray imaging"],["dc.subject.gro","x-ray scattering"],["dc.subject.gro","cellular biophysics"],["dc.title","Scanning Small-Angle-X-Ray Scattering for Imaging Biological Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.volume","303"],["dc.contributor.author","Koelsch, P."],["dc.contributor.author","Viswanath, R."],["dc.contributor.author","Motschmann, H."],["dc.contributor.author","Shapovalov, V. L."],["dc.contributor.author","Brezesinski, G."],["dc.contributor.author","Moehwald, H."],["dc.contributor.author","Horinek, D."],["dc.contributor.author","Netz, R. R."],["dc.contributor.author","Giewekemeyer, K."],["dc.contributor.author","Salditt, T."],["dc.contributor.author","Schollmeyer, H."],["dc.contributor.author","Von Klitzing, R."],["dc.contributor.author","Daillant, J."],["dc.contributor.author","Guenoun, P."],["dc.date.accessioned","2017-09-07T11:49:26Z"],["dc.date.available","2017-09-07T11:49:26Z"],["dc.date.issued","2007"],["dc.description.abstract","Charged surfaces and ion-water interactions at an interface play a decisive role in many physico-chemical and biological processes. The classical treatment of ions at charged interfaces is the Poisson-Boltzmann (PB) theory. Despite severe simplifying assumptions it describes surprisingly well univalent ions not too close to the interface for low electrolyte concentrations in the mmol regime. However, it breaks down in the vicinity of the interface at higher surface charge densities. Consequently the list of decorations and modifications of the original PB equation is long aiming for a more realistic picture. One striking deficiency of the treatment on the pure electrostatic level is the prediction that ions of the same valence produce the same results, independent of their chemical nature. In contrast, experiments reveal pronounced differences between different ions. Specific ion effects can be found everywhere in chemistry and biology and there are many reports of pronounced differences in the properties of charged monolayers, micelles, vesicles, dispersions or polyelectrolyte multilayers using different identically charged counterions. The so-called \"counterion effect\" is usually discussed in terms of the Hofmeister series for cations or anions which are the result of a subtle balance of several competing evenly matched interactions. The complex interplay of electrostatics, dispersion forces, thermal motion, polarization, fluctuations, hydration, ion size effects and the impact of interfacial water structure makes it hard to identify a universal law. The diversity of specific ion effects is a direct consequence of this subtle interplay of forces and imposes a true challenge for the theories. The decisive information for an assessment of the theories is knowledge of the prevailing ion distribution. Hence a considerable amount of work has been applied to develop suitable model systems and to push surface characterization tools such as (resonant) X-ray reflectivity, total reflection X-ray fluorescence or X-ray standing waves to new limits. These techniques give direct information on the ions and on the interfacial architecture. A second alternative to complement these studies is infrared-visible sum frequency spectroscopy allowing to record surface vibrational spectra of the water as it is perturbed in the presence of the salts. The paper is organized in sections describing various facets of ion specific effects discussed within the network. (c) 2007 Elsevier B.V. All fights reserved."],["dc.identifier.doi","10.1016/j.colsurfa.2007.03.040"],["dc.identifier.gro","3143458"],["dc.identifier.isi","000247771200012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/974"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","French/ German Network on Complex Fluids - From 2D to 3D"],["dc.relation.eissn","1873-4359"],["dc.relation.eventlocation","Paris, FRANCE"],["dc.relation.ispartof","Colloids and Surfaces A: Physicochemical and Engineering Aspects"],["dc.relation.issn","0927-7757"],["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.subject.gro","x-ray scattering"],["dc.subject.gro","molecular biophysics"],["dc.title","Specific ion effects in physicochemical and biological systems: Simulations, theory and experiments"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","24"],["dc.bibliographiccitation.issue","S2"],["dc.bibliographiccitation.journal","Microscopy and Microanalysis"],["dc.bibliographiccitation.lastpage","25"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","Eckermann, Marina"],["dc.contributor.author","Robisch, Anna Lena"],["dc.contributor.author","Stadelmann, Christine"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2020-03-04T13:40:15Z"],["dc.date.available","2020-03-04T13:40:15Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1017/S1431927618012540"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63109"],["dc.language.iso","en"],["dc.relation.issn","1431-9276"],["dc.relation.issn","1435-8115"],["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.subject.gro","biomedical tomography"],["dc.title","3d Virtual Histology of Human Cerebellum by Propagation-Based X-Ray Phase-Contrast Tomography"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","299"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Jahrbuch der Göttinger Akademie der Wissenschaften"],["dc.bibliographiccitation.lastpage","319"],["dc.bibliographiccitation.volume","2011"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-09-07T11:54:08Z"],["dc.date.available","2017-09-07T11:54:08Z"],["dc.date.issued","2012"],["dc.identifier.doi","10.1515/jbg-2011-0027"],["dc.identifier.gro","3145115"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2816"],["dc.language.iso","de"],["dc.notes.intern","Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0373-9767"],["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","Röntgenmikroskopie ohne Linsen: vom Objekt zum Beugungsbild und zurück"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","561"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Structural Biology"],["dc.bibliographiccitation.lastpage","568"],["dc.bibliographiccitation.volume","192"],["dc.contributor.author","Bartels, Matthias"],["dc.contributor.author","Krenkel, Martin"],["dc.contributor.author","Cloetens, Peter"],["dc.contributor.author","Möbius, Wiebke"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-09-07T11:54:52Z"],["dc.date.available","2017-09-07T11:54:52Z"],["dc.date.issued","2015"],["dc.description.abstract","We have used X-ray phase contrast tomography to resolve the structure of uncut, entire myelinated optic, saphenous and sciatic mouse nerves. Intrinsic electron density contrast suffices to identify axonal structures. Specific myelin labeling by an osmium tetroxide stain enables distinction between axon and surrounding myelin sheath. Utilization of spherical wave illumination enables zooming capabilities which enable imaging of entire sciatic intemodes as well as identification of sub-structures such as nodes of Ranvier and Schmidt-Lanterman incisures. (C) 2015 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.jsb.2015.11.001"],["dc.identifier.gro","3141782"],["dc.identifier.isi","000365458400028"],["dc.identifier.pmid","26546551"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/1013"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.eissn","1095-8657"],["dc.relation.issn","1047-8477"],["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.subject.gro","biomedical tomography"],["dc.title","Myelinated mouse nerves studied by X-ray phase contrast zoom tomography"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Kalbfleisch, Sebastian"],["dc.contributor.author","Neubauer, Heike"],["dc.contributor.author","Krüger, Sven P"],["dc.contributor.author","Bartels, Matthias"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Mai, Dong-Du"],["dc.contributor.author","Giewekemeyer, Klaus"],["dc.contributor.author","Hartmann, Britta"],["dc.contributor.author","Sprung, Michael"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","McNulty, Ian"],["dc.contributor.author","Eyberger, Catherine"],["dc.contributor.author","Lai, Barry"],["dc.date.accessioned","2017-09-07T11:54:07Z"],["dc.date.available","2017-09-07T11:54:07Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1063/1.3625313"],["dc.identifier.gro","3145117"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2818"],["dc.language.iso","en"],["dc.notes.intern","Crossref Import"],["dc.notes.status","public"],["dc.publisher","AIP Publishing"],["dc.publisher.place","Melville, NY"],["dc.relation","SFB 755: Nanoscale Photonic Imaging"],["dc.relation.conference","10th International Conference on X-Ray Microscopy"],["dc.relation.eventend","2010-08-20"],["dc.relation.eventlocation","Chicago, Illinois"],["dc.relation.eventstart","2010-08-15"],["dc.relation.isbn","0-7354-0925-0"],["dc.relation.isbn","978-0-7354-0925-5"],["dc.relation.ispartof","The 10th International Conference on X-Ray Microscopy"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","The Göttingen Holography Endstation of Beamline P10 at PETRA III∕DESY"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5519"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Optics Letters"],["dc.bibliographiccitation.lastpage","5522"],["dc.bibliographiccitation.volume","41"],["dc.contributor.author","Robisch, A. -L."],["dc.contributor.author","Wallentin, J."],["dc.contributor.author","Pacureanu, A."],["dc.contributor.author","Cloetens, P."],["dc.contributor.author","Salditt, T."],["dc.date.accessioned","2018-04-23T11:49:03Z"],["dc.date.available","2018-04-23T11:49:03Z"],["dc.date.issued","2016"],["dc.description.abstract","We have performed near-field x-ray imaging with simultaneous object and probe reconstruction. By an advanced ptychographic algorithm based on longitudinal and lateral translations, full-field images of nanoscale objects are reconstructed with quantitative contrast values, along with the extended wavefronts used to illuminate the objects. The imaging scheme makes idealizing assumptions on the probe obsolete, and efficiently disentangles phase shifts related to the object from the imperfections in the illumination. We validate this approach by comparison to the conventional reconstruction scheme without simultaneous probe retrieval, based on the contrast transfer function algorithm. To this end, a set of semiconductor nanowires with controlled chemical composition (InP core, insulating SiO2 layer, and indium tin oxide cover) is imaged using the quasi-point source illumination realized by the hard x-ray nanofocus (26  nm×39  nm spot size) of the ID16A Nano-Imaging beamline at the European Synchrotron Radiation Facility."],["dc.identifier.doi","10.1364/ol.41.005519"],["dc.identifier.gro","3142480"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13631"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/110083"],["dc.language.iso","en"],["dc.notes.intern","lifescience updates Crossref Import"],["dc.notes.status","final"],["dc.relation.eissn","1539-4794"],["dc.relation.issn","0146-9592"],["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","Holographic imaging with a hard x-ray nanoprobe: ptychographic versus conventional phase retrieval"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","041109"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Applied Physics Letters"],["dc.bibliographiccitation.volume","113"],["dc.contributor.author","Hagemann, Johannes"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2020-04-23T14:35:46Z"],["dc.date.available","2020-04-23T14:35:46Z"],["dc.date.issued","2018"],["dc.description.abstract","X-ray phase contrast imaging based on free space propagation relies on phase retrieval to obtain sharp images of micro- and nanoscale objects, with widespread applications in material science and biomedical research. For high resolution synchrotron experiments, phase retrieval is largely based on the single step reconstruction using the contrast transfer function approach (CTF), as introduced almost twenty years ago [Cloetens et al., Appl. Phys. Lett. 75, 2912 (1999)]. Notwithstanding its tremendous merits, this scheme makes stringent assumptions on the optical properties of the object, requiring, in particular, a weakly varying phase. In this work, we show how significant the loss in image quality becomes if these assumption are violated, and how phase retrieval can be easily improved by a simple scheme of alternating projections. Importantly, the approach demonstrated here uses the same input data and constraint sets as the conventional CTF-based phase retrieval, and is particularly well suited for the holographic regime."],["dc.identifier.doi","10.1063/1.5029927"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/64332"],["dc.language.iso","en"],["dc.relation.eissn","1077-3118"],["dc.relation.issn","0003-6951"],["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","Phase retrieval for near-field X-ray imaging beyond linearisation or compact support"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e2014472118"],["dc.bibliographiccitation.issue","18"],["dc.bibliographiccitation.journal","Proceedings of the National Academy of Sciences of the United States of America"],["dc.bibliographiccitation.volume","118"],["dc.contributor.author","Keppeler, Daniel"],["dc.contributor.author","Kampshoff, Christoph A."],["dc.contributor.author","Thirumalai, Anupriya"],["dc.contributor.author","Duque-Afonso, Carlos J."],["dc.contributor.author","Schaeper, Jannis J."],["dc.contributor.author","Quilitz, Tabea"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","Vogl, Christian"],["dc.contributor.author","Hessler, Roland"],["dc.contributor.author","Meyer, Alexander"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Moser, Tobias"],["dc.date.accessioned","2021-06-02T14:33:54Z"],["dc.date.available","2021-06-02T14:33:54Z"],["dc.date.issued","2021-05-04"],["dc.description.abstract","The cochlea of our auditory system is an intricate structure deeply embedded in the temporal bone. Compared with other sensory organs such as the eye, the cochlea has remained poorly accessible for investigation, for example, by imaging. This limitation also concerns the further development of technology for restoring hearing in the case of cochlear dysfunction, which requires quantitative information on spatial dimensions and the sensorineural status of the cochlea. Here, we employed X-ray phase-contrast tomography and light-sheet fluorescence microscopy and their combination for multiscale and multimodal imaging of cochlear morphology in species that serve as established animal models for auditory research. We provide a systematic reference for morphological parameters relevant for cochlear implant development for rodent and nonhuman primate models. We simulate the spread of light from the emitters of the optical implants within the reconstructed nonhuman primate cochlea, which indicates a spatially narrow optogenetic excitation of spiral ganglion neurons."],["dc.identifier.doi","10.1073/pnas.2014472118"],["dc.identifier.pmid","33903231"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87093"],["dc.identifier.url","https://mbexc.uni-goettingen.de/literature/publications/251"],["dc.language.iso","en"],["dc.relation","EXC 2067: Multiscale Bioimaging"],["dc.relation.eissn","1091-6490"],["dc.relation.issn","0027-8424"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.relation.workinggroup","RG Moser (Molecular Anatomy, Physiology and Pathology of Sound Encoding)"],["dc.subject.gro","x-ray imaging"],["dc.subject.gro","biomedical tomography"],["dc.title","Multiscale photonic imaging of the native and implanted cochlea"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23345"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Optics Express"],["dc.bibliographiccitation.lastpage","23357"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Robisch, Anna-Lena"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-09-07T11:47:06Z"],["dc.date.available","2017-09-07T11:47:06Z"],["dc.date.issued","2013"],["dc.description.abstract","Full field x-ray propagation imaging can be severely deteriorated by wave front aberrations. Here we present an extension of ptychographic phase retrieval with simultaneous probe and object reconstruction suitable for the near-field diffractive imaging setting. Update equations used to iteratively solve the phase problem from a set of near-field images in view of reconstruction both object and probe are derived. The algorithm is tested based on numerical simulations including photon shot noise. The results indicate that the approach provides an efficient way to overcome restrictive idealizations of the illumination wave in the near-field (propagation) imaging. (C) 2013 Optical Society of America"],["dc.identifier.doi","10.1364/OE.21.023345"],["dc.identifier.gro","3142271"],["dc.identifier.isi","000325549800033"],["dc.identifier.pmid","24104248"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6431"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1094-4087"],["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","Phase retrieval for object and probe using a series of defocus near-field images"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]