Joachim Kohlbrecher
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View article: Controlling the cold-set gelation of Bovine Serum Albumin protein using alcohol and ionic surfactant
Controlling the cold-set gelation of Bovine Serum Albumin protein using alcohol and ionic surfactant Open
View article: Bond-Reversibility Effects on Self-Crowding of Unimacromolecular Nano-Objects
Bond-Reversibility Effects on Self-Crowding of Unimacromolecular Nano-Objects Open
The scaling behavior of linear chains with reversible bonds and, in particular, its dependence on the concentration are fundamental problems of polymer physics that are not fully understood. By means of small-angle neutron scattering we in…
View article: Scattering effects in multi-layer neutron optics
Scattering effects in multi-layer neutron optics Open
Modern neutron optical elements allow for high flexibility in shaping beams with extended reflection angles due to optimized multi-layer coatings. For applications where the shaped beam is relevant to generate resolution or to image certai…
View article: Holographic hyperbranched polymer nanocomposite grating with exceptionally large neutron scattering length density modulation amplitudes
Holographic hyperbranched polymer nanocomposite grating with exceptionally large neutron scattering length density modulation amplitudes Open
View article: Heterogeneous Decoration of Ionic Mesopores by Ionic and Poly(Ionic) Liquids
Heterogeneous Decoration of Ionic Mesopores by Ionic and Poly(Ionic) Liquids Open
Understanding the molecular structure of mesoporous solid ionic systems is essential for optimizing their macroscopic properties, such as enhanced ionic transport for energy applications and improved mechanical flexibility. These systems c…
View article: Dynamic Interfacial Architectures: Cruciferin‐Stabilized Oil/Water Interfaces for Sustainable Emulsions
Dynamic Interfacial Architectures: Cruciferin‐Stabilized Oil/Water Interfaces for Sustainable Emulsions Open
Stabilizing oil‐water interfaces in emulsions by plant‐based proteins provides sustainable and tunable ways for designing emulsions with specific properties, for food, healthcare, and pharmaceuticals. Cruciferin, a protein from rapeseed, h…
View article: Proteins derived from green biomass: Alfalfa (Medicago sativa L.) and water lentil concentrate (Lemna minor L.) in the focus as stabilizers for emulsions
Proteins derived from green biomass: Alfalfa (Medicago sativa L.) and water lentil concentrate (Lemna minor L.) in the focus as stabilizers for emulsions Open
Green crop biomass is a sustainable protein source, which can support solving global food challenges as well as improving the bioeconomy for novel food utilization. Two green biomasses -alfalfa and water lentil- known for a high protein co…
View article: Diffractive lenses for neutron techniques
Diffractive lenses for neutron techniques Open
Many neutron techniques can greatly benefit from enhanced neutron lenses for focusing and imaging. In this work, we revisit the potential of diffractive optics for neutron beams, building on advanced high-resolution nano-lithography techni…
View article: The Role of Light Irradiation and Dendrimer Generation in Directing Electrostatic Self-Assembly
The Role of Light Irradiation and Dendrimer Generation in Directing Electrostatic Self-Assembly Open
pH-responsive polyamidoamine (PAMAM) dendrimers are used as well-defined building blocks to design light-switchable nano-assemblies in solution. The complex interplay between the photoresponsive di-anionic azo dye Acid Yellow 38 (AY38) and…
View article: A photo-switchable surfactant possessing a spiropyran-moiety in its backbone – unravelling the structure of micelles with small-angle neutron scattering (SANS) and transmission electron microscopy (TEM)
A photo-switchable surfactant possessing a spiropyran-moiety in its backbone – unravelling the structure of micelles with small-angle neutron scattering (SANS) and transmission electron microscopy (TEM) Open
We use small-angle neutron scattering (SANS) and transmission electron microscopy (TEM) to elucidate the shape of micelles that a spiropyran (SP) surfactant forms.
View article: Proline stabilizes amphiphilic gold nanoparticles <i>via</i> hydrophobic interactions
Proline stabilizes amphiphilic gold nanoparticles <i>via</i> hydrophobic interactions Open
Proline stabilizes gold nanoparticle dispersions. Using gold nanoparticles as a model system, we identify the scale, magnitude, and nature of the screening effect. Screening becomes stronger as the hydrophobic attraction between particles …
View article: Emulsions stabilized by pea protein – Hydration and protein distribution
Emulsions stabilized by pea protein – Hydration and protein distribution Open
This study investigates the structural properties of oil-in-water emulsions stabilized with pea protein using small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) techniques particularly as regards the hydration of…
View article: Deformation-induced Au precipitation kinetics in Fe-Au-W alloys studied by time-resolved small angle neutron scattering
Deformation-induced Au precipitation kinetics in Fe-Au-W alloys studied by time-resolved small angle neutron scattering Open
In-situ time-resolved small-angle neutron scattering (SANS) experiments were conducted on homogenised cold-rolled ternary Fe-Au-W alloys during aging for 12 h at temperatures of 650 to 700 °C in order to study the kinetics of the …
View article: Antimicrobial Peptides Increase Line Tension in Raft-Forming Lipid Membranes
Antimicrobial Peptides Increase Line Tension in Raft-Forming Lipid Membranes Open
The formation of phase separated membrane domains is believed to be essential for the function of the cell. The precise composition and physical properties of lipid bilayer domains play crucial roles in regulating protein activity and gove…
View article: Photosensitive materials for neutron optics
Photosensitive materials for neutron optics Open
Photosensitive materials with ever-improving properties are of great importance for optical and photonics applications. Additionally, they are extremely useful for designing components for neutron optical devices. We provide an overview on…
View article: In situ studies of plant-based meat analog texturization
In situ studies of plant-based meat analog texturization Open
Plant-based meat analogs are the rising stars of the food industry as they promise to mimic the experience of eating meat without animals. They are popular due to their meat-like fibrous structures and typically obtained via high-moisture …
View article: Magnetic microstructure of nanocrystalline Fe-Nb-B alloys as seen by small-angle neutron and X-ray scattering
Magnetic microstructure of nanocrystalline Fe-Nb-B alloys as seen by small-angle neutron and X-ray scattering Open
We have investigated the magnetic microstructure of two-phase Fe-Nb-B~based Nanoperm alloys using unpolarized small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS). Our SANS analysis reveals a significantly large ma…
View article: Thermal Density Fluctuations and Polymorphic Phase Transitions of Ethane (C<sub>2</sub>D<sub>6</sub>) in the Gas/Liquid and Supercritical States
Thermal Density Fluctuations and Polymorphic Phase Transitions of Ethane (C<sub>2</sub>D<sub>6</sub>) in the Gas/Liquid and Supercritical States Open
The phase behavior of the liquid C2D6 below and above the critical point was investigated using small-angle neutron scattering (SANS) in temperature and pressure ranges from 10 to 45 °C and 20 to 126 bar, respectively…
View article: Effect of cardiolipin on the lamellarity and elongation of liposomes hydrated in PBS
Effect of cardiolipin on the lamellarity and elongation of liposomes hydrated in PBS Open
View article: Iron-carbohydrate complexes treating iron anaemia: Understanding the nano-structure and interactions with proteins through orthogonal characterisation
Iron-carbohydrate complexes treating iron anaemia: Understanding the nano-structure and interactions with proteins through orthogonal characterisation Open
View article: Synergistic Effect of Cardiolipin Type and Concentration on Phosphatidylcholine Vesicle Morphology
Synergistic Effect of Cardiolipin Type and Concentration on Phosphatidylcholine Vesicle Morphology Open
View article: Integrative solution structure of PTBP1-IRES complex reveals strong compaction and ordering with residual conformational flexibility
Integrative solution structure of PTBP1-IRES complex reveals strong compaction and ordering with residual conformational flexibility Open
View article: Spontaneous Chiral Symmetry Breaking and Lane Formation in Ferromagnetic Ferrofluids
Spontaneous Chiral Symmetry Breaking and Lane Formation in Ferromagnetic Ferrofluids Open
Ferromagnetic ferrofluids are synthetic materials consisting of magnetic nanoplatelets dispersed in an isotropic fluid. Their main characteristics are the formation of stable magnetic domains and the presence of macroscopic magnetization e…
View article: Net Dzyaloshinskii–Moriya interaction in defect-enriched ferromagnet
Net Dzyaloshinskii–Moriya interaction in defect-enriched ferromagnet Open
The Dzyaloshinskii–Moriya interaction (DMI), which typically occurs in lattices without space inversion symmetry, can also be induced in a highly symmetric lattice by local symmetry breaking due to any lattice defect. We recently presented…
View article: Effect of annealing on the magnetic microstructure of high-pressure torsion iron: the relevance of higher-order contributions to the magnetic small-angle neutron scattering cross section
Effect of annealing on the magnetic microstructure of high-pressure torsion iron: the relevance of higher-order contributions to the magnetic small-angle neutron scattering cross section Open
The development of higher-order micromagnetic small-angle neutron scattering theory in nanocrystalline materials is still in its infancy. One key challenge remaining in this field is understanding the role played by the microstructure on t…
View article: Comparative study of the co-assembly behaviour of 3-chloro-4-hydroxy-phenylazo dyes with DTAB
Comparative study of the co-assembly behaviour of 3-chloro-4-hydroxy-phenylazo dyes with DTAB Open
Three azo dyes with a congruent structural sub-unit bind to the cationic surfactant dodecyltrimethylammoniumbromide (DTAB) at different stoichiometries. Trends in binding stoichiometry were related to morphological changes of dye/DTAB mice…
View article: Updates in<i>SASfit</i>for fitting analytical expressions and numerical models to small-angle scattering patterns
Updates in<i>SASfit</i>for fitting analytical expressions and numerical models to small-angle scattering patterns Open
Small-angle scattering is an increasingly common method for characterizing particle ensembles in a wide variety of sample types and for diverse areas of application. SASfit has been one of the most comprehensive and flexible curve-fitting …
View article: Evolution of iron carbides during tempering of low-alloy tool steel studied with polarized small angle neutron scattering, electron microscopy and atom probe
Evolution of iron carbides during tempering of low-alloy tool steel studied with polarized small angle neutron scattering, electron microscopy and atom probe Open
View article: Hierarchical self-assembly in ionic liquid crosslinked polyelectrolyte gels as a citric acid sensor
Hierarchical self-assembly in ionic liquid crosslinked polyelectrolyte gels as a citric acid sensor Open
The design of an enzyme-free biocompatible electrochemical platform for the detection of citric acid is discussed. We have studied sol-gel transition in DNA ionic liquid solution triggered by the ionic liquid (IL), (1-Octyl-3-methylimidazo…
View article: Integrative solution structure of a PTBP1-viral IRES complex reveals strong compaction and ordering with residual conformational flexibility
Integrative solution structure of a PTBP1-viral IRES complex reveals strong compaction and ordering with residual conformational flexibility Open
RNA-binding proteins (RBPs) are crucial regulators of gene expression and often comprise well-defined domains interspersed by flexible, intrinsically disordered regions. The structure determination of ribonucleoprotein complexes involving …