TY - JOUR AU - Zietlow, Christian AU - Lindner, Jörg ID - 52090 JF - Numerical Algorithms TI - ADMM-TGV image restoration for scientific applications with unbiased parameter choice ER - TY - CHAP AU - Bürger, Julius AU - Lindner, Jörg K. N. ED - Bürger, Julius ID - 46980 SN - 978-3-8376-6377-8 T2 - Climate Protection, Resource Efficiency, and Sustainable Mobility - Transdisciplinary Approaches to Design and Manufacturing Technology TI - Transmission electron microscopy and transdisciplinary research ER - TY - CHAP AU - Bürger, Julius AU - Lindner, Jörg K. N. ID - 47133 SN - 978-3-8376-6377-8 T2 - Climate Protection, Resource Efficiency, and Sustainable Mobility - Transdisciplinary Approaches to Design and Manufacturing Technology TI - Transmission electron microscopy and transdisciplinary research ER - TY - CHAP AU - Bürger, Julius AU - Lindner, Jörg K. N. ID - 47123 SN - 978-3-8376-6377-8 T2 - Climate Protection, Resource Efficiency, and Sustainable Mobility - Transdisciplinary Approaches to Design and Manufacturing Technology TI - Transmission electron microscopy and transdisciplinary research ER - TY - GEN ED - Lindner, Jörg ED - Brassat, Katharina ID - 49367 SN - ISSN 2073-4360 T2 - Polymers TI - Self-Assembled Block Copolymer Thin Films and Their Applications ER - TY - JOUR AU - Kismann, Michael AU - Riedl, Dr. Thomas AU - Lindner, Prof. Dr. Jörg KN ID - 21125 JF - Materials Science in Semiconductor Processing TI - Ordered arrays of Si nanopillars with alternating diameters fabricated by nanosphere lithography and metal-assisted chemical etching ER - TY - JOUR AB - A dark-field scanning transmission ion microscopy detector was designed for the helium ion microscope. The detection principle is based on a secondary electron conversion holder with an exchangeable aperture strip allowing its acceptance angle to be tuned from 3 to 98 mrad. The contrast mechanism and performance were investigated using freestanding nanometer-thin carbon membranes. The results demonstrate that the detector can be optimized either for most efficient signal collection or for maximum image contrast. The designed setup allows for the imaging of thin low-density materials that otherwise provide little signal or contrast and for a clear end-point detection in the fabrication of nanopores. In addition, the detector is able to determine the thickness of membranes with sub-nanometer precision by quantitatively evaluating the image signal and comparing the results with Monte Carlo simulations. The thickness determined by the dark-field transmission detector is compared to X-ray photoelectron spectroscopy and energy-filtered transmission electron microscopy measurements. AU - Emmrich, Daniel AU - Wolff, Annalena AU - Meyerbröker, Nikolaus AU - Lindner, Jörg AU - Beyer, André AU - Gölzhäuser, Armin ID - 21374 JF - Beilstein Journal of Nanotechnology SN - 2190-4286 TI - Scanning transmission helium ion microscopy on carbon nanomembranes ER - TY - JOUR AU - Rosenthal, Marta AU - Lindner, Jörg K N AU - Gerstmann, Uwe AU - Meier, Armin AU - Schmidt, W Gero AU - Wilhelm, René ID - 20501 IS - 42930-42937 JF - Royal Society of Chemistry TI - A photoredox catalysed Heck reaction via hole transfer from a Ru(II)-bis(terpyridine) complex to graphene oxide VL - 10 ER - TY - JOUR AU - Tischendorf, R. AU - Simmler, M. AU - Weinberger, C. AU - Bieber, M. AU - Reddemann, M. AU - Fröde, F. AU - Lindner, J. AU - Pitsch, H. AU - Kneer, R. AU - Tiemann, M. AU - Nirschl, H. AU - Schmid, H.-J. ID - 20848 JF - Journal of Aerosol Science SN - 0021-8502 TI - Examination of the evolution of iron oxide nanoparticles in flame spray pyrolysis by tailored in situ particle sampling techniques ER - TY - JOUR AU - Bürger, Julius AU - Riedl, Thomas AU - Lindner, Jörg K.N. ID - 20892 JF - Ultramicroscopy SN - 0304-3991 TI - Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images ER - TY - JOUR AB -

A hole transfer from an excited Ru unit towards graphene oxide significantly improved the photocatalytic activity of the complexes.

AU - Rosenthal, Marta AU - Lindner, Jörg AU - Gerstmann, Uwe AU - Meier, Armin AU - Schmidt, Wolf Gero AU - Wilhelm, René ID - 29744 IS - 70 JF - RSC Advances KW - General Chemical Engineering KW - General Chemistry SN - 2046-2069 TI - A photoredox catalysed Heck reaction via hole transfer from a Ru(ii)-bis(terpyridine) complex to graphene oxide VL - 10 ER - TY - JOUR AB - Zinc oxide (ZnO) hollow spheres with defined morphology and micro-/nanostructure are prepared by a hydrothermal synthesis approach. The materials possess fine-leaved structures at their particle surface (nanowall hollow micro spheres). Morphology control is achieved by citric acid used as an additive in variable relative quantities during the synthesis. The structure formation is studied by various time-dependent ex situ methods, such as scanning electron microscopy, x-ray diffraction, and Raman spectroscopy. The fine-leaved surface structure is characterized by high-resolution transmission electron microscopy techniques (HRTEM, STEM), using a high-angle annular dark field detector, as well as by differential phase contrast analysis. In-depth structural characterization of the nanowalls by drop-by-drop ex situ FE-SEM analysis provides insight into possible structure formation mechanisms. Further investigation addresses the thermal stability of the particle morphology and the enhancement of the surface-to-volume ratio by heat treatment (examined by N2 physisorption). AU - Engelkemeier, Katja AU - Lindner, Jörg AU - Bürger, Julius AU - Vaupel, Kathrin AU - Hartmann, Marc AU - Tiemann, Michael AU - Hoyer, Kay-Peter AU - Schaper, Mirko ID - 24100 JF - Nanotechnology SN - 0957-4484 TI - Nano-architectural complexity of zinc oxide nanowall hollow microspheres and their structural properties VL - 31 ER - TY - JOUR AU - Engelkemeier, Katja AU - Lindner, Jörg K N AU - Bürger, Julius AU - Vaupel, Kathrin AU - Hartmann, Marc AU - Tiemann, Michael AU - Hoyer, Kay-Peter AU - Schaper, Mirko ID - 20890 JF - Nanotechnology SN - 0957-4484 TI - Nano-architectural complexity of zinc oxide nanowall hollow microspheres and their structural properties ER - TY - JOUR AB - DNA origami nanostructures are versatile substrates for the controlled arrangement of molecular capture sites with nanometer precision and thus have many promising applications in singlemolecule bioanalysis. Here, we investigate the adsorption of DNA origami nanostructures in nanohole arrays which represent an important class of biosensors and may benefit from the incorporation of DNA origami-based molecular probes. Nanoholes with well-defined diameter that enable the adsorption of single DNA origami triangles are fabricated in Au films on Siwafers by nanosphere lithography. The efficiency of directed DNA origami adsorption on the exposed SiO2 areas at the bottoms of the nanoholes is evaluated in dependence of various parameters, i.e., Mg2+ and DNA origami concentrations, buffer strength, adsorption time, and nanohole diameter. We observe that the buffer strength has a surprisingly strong effect on DNA origami adsorption in the nanoholes and that multiple DNA origami triangles with 120 nm edge length can adsorb in nanoholes as small as 120 nm in diameter. We attribute the latter observation to the low lateral mobility of once adsorbed DNA origami on the SiO2 surface, in combination with parasitic adsorption to the Au film. While parasitic adsorption can be suppressed by modifying the Au film with a hydrophobic self-assembled monolayer, the limited surface mobility of the adsorbed DNA origami still leads to poor localization accuracy in the nanoholes and results in many DNA origami crossing the boundary to the Au film even under optimized conditions. We discuss possible ways to minimize this effect by varying the composition of the adsorption buffer, employing different fabrication conditions, or using other substrate materials for nanohole array fabrication. AU - Brassat, Katharina AU - Ramakrishnan, Saminathan AU - Bürger, Julius AU - Hanke, Marcel AU - Doostdar, Mahnaz AU - Lindner, Jörg AU - Grundmeier, Guido AU - Keller, Adrian ID - 3912 JF - Langmuir SN - 0743-7463 TI - On the Adsorption of DNA Origami Nanostructures in Nanohole Arrays ER - TY - JOUR AU - Brassat, Katharina AU - Ramakrishnan, Saminathan AU - Bürger, Julius AU - Hanke, Marcel AU - Doostdar, Mahnaz AU - Lindner, Jörg AU - Grundmeier, Guido AU - Keller, Adrian ID - 22664 JF - Langmuir SN - 0743-7463 TI - On the Adsorption of DNA Origami Nanostructures in Nanohole Arrays VL - 34 ER - TY - CONF AU - Kismann, Michael AU - Riedl, Thomas AU - Wu, Xia AU - Wagner, Thorsten AU - Lindner, Jörg ID - 4412 TI - Photonic crystal properties of Si and SiO2 nanopillar arrays fabricated by nanosphere lithography and metal-assisted wet-chemical etching ER - TY - CONF AU - Riedl, Thomas AU - Kunnathully, Vinay AU - Trapp, Alexander AU - Reuter, Dirk AU - Lindner, Jörg ID - 4413 TI - Strain Relaxation in InAs Nanoislands on top of GaAs (111) A Nanopillars ER - TY - CONF AU - Riedl, Thomas AU - Kunnathully, Vinay AU - Trapp, Alexander AU - Reuter, Dirk AU - Lindner, Jörg ID - 4414 TI - MBE Growth of InAs on Nanopillar-Patterned GaAs (111) A ER - TY - JOUR AU - Achtstein, Alexander W. AU - Marquardt, Oliver AU - Scott, Riccardo AU - Ibrahim, Mohamed AU - Riedl, Thomas AU - Prudnikau, Anatol V. AU - Antanovich, Artsiom AU - Owschimikow, Nina AU - Lindner, Jörg AU - Artemyev, Mikhail AU - Woggon, Ulrike ID - 4415 JF - accepted 05.09.2018 TI - Impact of shell growth on recombination dynamics and exciton-phonon interaction in CdSe-CdS core-shell nanoplatelets ER - TY - CONF AU - Brassat, Katharina AU - Riedl, Thomas AU - Lindner, Jörg ID - 4416 TI - Self-assembled Surface Patterns for Controlled Nanoparticle Placement and Improved Semiconductor Heteroepitaxy ER -