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We show that diffusing wave spectroscopy (DWS) permits the characterization of dynamic properties of concentrated colloidal suspensions on a large range of time- and length-scales ranging from a few angstroms to tens of nanometres. We focus in particular on the study of the aggregation and sol-gel transition in concentrated colloidal suspensions. We present a new technique to overcome the problem
The application of light scattering to concentrated colloidal suspensions has often been considered too complicated due to strong multiple scattering. Here we show that diffusing wave spectroscopy (DWS) permits the characterization of dynamic and static properties of such systems on a large range of time and length scales. In particular we focus on the aggregation and sol-gel transition in differe
We report an investigation of the microscopic structure and dynamics of biopolymer gels and relate them to the macroscopic viscoelastic properties of such systems. Biopolymer solutions and gels represent one of the most interesting class of gelling systems since they are of major industrial and scientific interest. We performed a systematic study using concentrated solutions of casein micelles whi
Surfactants containing sugar components and fatty acids satisfy the quality standards for food application. The food grade sugar ester in this study is a commercial sucrose monoester of stearic acid (abbreviated SES), the oil phase consists of a 1:1 mixture of n-tetradecane and l-butanol. The originally planned food grade oil, a medium chain triglyceride, is substituted by tetradecane because tetr
Sugar surfactants have recently attracted considerable interest. We report systematic light and neutron scattering experiments with aqueous solutions of the alkyl polyglucoside C8/10G1.5. The system exhibits a transition from globular to polymer-like micelles upon adding hexanol. We can finely tune the extent of micellar growth and reach conditions where solutions of relatively short cylinders exi
Sugar surfactants have recently attracted considerable interest. Here we report a systematic light and neutron scattering investigation of aqueous solutions of the alkyl polyglucoside C8/10G1.5. The system exhibits a transition from globular to giant wormlike micelles upon the addition of hexanol. We can finely tune the extent of micellar growth and in particular reach conditions where solutions o
We used fluorogenic substrates, namely, alkyldiacyl glycerols labeled with a fluorophore and a fluorescence quencher, to measure lipase activities. For this optical lipase assay it is necessary that the water-insoluble fluorogenic substrates are dispersed in an aqueous medium in the presence of appropriate detergents in order to obtain well-defined and reproducible systems with high optical transp
Vesicle and micellar structures formed by mixtures of the oppositely charged surfactants cetyltrimethylammonium bromide (CTAB) and sodium octyl sulfate (SOS) with and without added sodium bromide (NaBr) have been examined by small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) techniques. The resulting spectra have been evaluated using a Fourier transform/deconvolution tec
Entangled photons offer quantum correlations with no classical analogue. In entangled pair two-photon absorption (ETPA), absorption rate is predicted to scale linearly rather than quadratically with photon flux, promising molecular excitation at fluxes far below the classical threshold. Reported ETPA cross sections nevertheless vary widely across experiments, largely since the observable, the diff
For the 2027 State Garden Show (LGS) in Neustadt a. d. WeinstraBe, a building will be erected, using a CEM II/C-M (Q-LL) as binder containing 30 O/o calcined clay in combination with 15 O/o limestone powder and just 55 O/o clinker (incl. sulphate carrier), for the first time in Germany. The panorama bar on the Neustadt viewpoint is a single-story building in reinforced concrete construction with a
Mechanochemical activation (MCA) of phyllosilicates is one of the most promising solutions to produce reactive supplementary cementitious materials (SCMs). Several studies have already shown that MCA outperforms thermal activation (TA) in terms of reactivity when clays are low in kaolinite but rich in 2:1 phyllosilicates. Because reactivity depends on phyllosilicate type as well as content, and cl
The investigations of clinker-free model and synthetic cement systems reveal deeper insight into the behavior of metasmectite during early hydration. The use of metasmectite accelerates the aluminate clinker reaction and influences the degree of hydration of alite. Its chemical reactivity can be demonstrated in clinker-free as well as model cement systems by direct quantification of the metasmecti
Construction and demolition waste represents one of the largest waste streams in the European Union. The soil and stone fraction accounts for the biggest share of these materials. This fraction includes waste materials from tunnelling and excavations, which often contain significant amounts of clay minerals. The demand for raw materials containing clays will increase significantly due to the growi
When AI agents accessed the internet and intruded on another party’s systems during the recent OpenAI–Hugging Face incident, it was widely framed as a sign of uncontrollable agentic AI. The UN's Independent International Scientific Panel on AI (IISPAI) has now adopted this exact premise in its first Thematic Brief, treating the breach as an inflection point. The Panel discusses this primarily as a
Artificial Intelligence (AI) applications are increasingly used to support independent living and care for older adults, particularly those in vulnerable situations. Yet, how vulnerability is constructed when AI enters later-life care remains poorly theorized. Existing approaches to vulnerability in old age inadequately address AI-related risks, structural conditions, exposure pathways, and life c
At MAX IV pixelated area detectors are operated at high frame rates to take advantage of the X-ray beam properties available from the fourth generation synchrotron in scattering, diffraction and imaging applications. A variety of photon counting and charge integrating detectors and sCMOS cameras have been integrated into a common data acquisition (DAQ) system in which data are streamed to a centra
Innovation characterizes industrial, economic, and societal development. Within the domain of the built environment, technological advancements are continuously pursued to enhance structural safety, functionality, and cost efficiency. At the same time, the challenges associated with ageing infrastructure and constrained resources necessitate the systematic development and effective diffusion of te
E-commerce returns are costly yet associated with higher purchasing, creating a profitability paradox. Using archival data from a Nordic fashion retailer (2015–2022; 260,698 orders; 110,772 customers), we test an exposure-based framework with Bernoulli modeling, difference-in-differences with matched controls, and profitability threshold analysis. Returner status follows a Bernoulli exposure patte
Schima – Morphe – Ichos (SMI) is a responsive performance that combines sound, movement and sculptural objects made from steel and textiles that incorporate sensing devices. Moving the sculptures around activates the real-time transformation of sounds recorded whilst the sculptures were made based on position, orientation and movement data. Sound is directly related to the material properties of t
