Günter K. Auernhammer
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View article: UV-degraded polyethylene exhibits variable charge and enhanced cation adsorption
UV-degraded polyethylene exhibits variable charge and enhanced cation adsorption Open
The widespread use of plastics has led to an omnipresence in soils. We aim to understand whether transformation of polyethylene (PE) and polyethylene terephthalate (PET) in the atmosphere alters their surface properties which, after input …
View article: Effects of surface wettability on bubble departure in liquid cross-flow
Effects of surface wettability on bubble departure in liquid cross-flow Open
Bubble departure from walls in cross-flow conditions has been studied. This process plays a fundamental role in numerous applications, from gas-liquid contacting, heterogeneous nucleation in cavitation, to flow boiling. Predicting the size…
View article: Nanoprecipitation and Drug Delivery with PMTC: Toward Biomedical Application of Polyesters from Radical Ring‐Opening Polymerization
Nanoprecipitation and Drug Delivery with PMTC: Toward Biomedical Application of Polyesters from Radical Ring‐Opening Polymerization Open
Polymerized cyclic ketene acetals (PCKAs) prepared by radical ring‐opening polymerization (RROP) have shown tremendous potential in the biomedical field. In this work, the field is expanded to the formation of fully degradable nanoparticle…
View article: Experimental and simulation study of resin infiltration in carbon fiber rovings
Experimental and simulation study of resin infiltration in carbon fiber rovings Open
Continuous-fiber-reinforced polymers are vital for lightweight structural applications, where fiber-matrix wetting critically influences composite performance. Understanding dynamic wetting behavior during resin infiltration remains challe…
View article: Rheological Insights from the Oscillation Dynamics of Viscoelastic Sessile Drops
Rheological Insights from the Oscillation Dynamics of Viscoelastic Sessile Drops Open
This study investigates the oscillation behavior of a sessile drop placed on a hydrophobic substrate subjected to vertical vibrations with varying frequencies and amplitudes. We examined the responses of both Newtonian and viscoelastic dro…
View article: Size‐Dependent Contact Angles of Microscopic Droplets on Ultra‐Smooth Silanized Surfaces Probed by Atomic Force Microscopy
Size‐Dependent Contact Angles of Microscopic Droplets on Ultra‐Smooth Silanized Surfaces Probed by Atomic Force Microscopy Open
Microscale wetting phenomena are of great technological and fundamental importance. Challenging questions arise in the growth process of nanometer to micrometer‐sized droplets. Atomic force microscopy is used to study the size dependence o…
View article: Breakup of viscous liquid bridges on solid surfaces
Breakup of viscous liquid bridges on solid surfaces Open
The breakup dynamics of viscous liquid bridges on solid surfaces is studied experimentally. It is found that the dynamics bears similarities to the breakup of free liquid bridges in the viscous regime. Nevertheless, the dynamics is signifi…
View article: Dataset: Coalescence of viscoelastic drops on a solid substrate
Dataset: Coalescence of viscoelastic drops on a solid substrate Open
This dataset contains the raw and processed data associated with the manuscript entitled 'Coalescence of viscoelastic drops on a solid substrate', which has recently been accepted for publication in Physical Review Fluids. The study invest…
View article: Impact of Nitric Oxide on the Surface Properties of Selected Polymers
Impact of Nitric Oxide on the Surface Properties of Selected Polymers Open
The change in the surface properties of polymer materials used in an extracorporeal membrane oxygenation (ECMO) device due to nitric oxide (NO) treatment was characterized by zeta-potential and dynamic contact-angle measurements. FTIR-ATR …
View article: Dynamic wetting of concentrated granular suspensions
Dynamic wetting of concentrated granular suspensions Open
Many materials, such as paints and inks used in applications like painting and 3D printing, are concentrated granular suspensions. In such systems, the contact line dynamics and the internal structure of the suspension interact through she…
View article: Electronic Laboratory Notebook: An Adaptable Solution
Electronic Laboratory Notebook: An Adaptable Solution Open
Good research data management is essential in modern-day laboratory work. Various solutions exist that are either highly specific or need a significant effort to be customized appropriately. This paper presents an integrated solution for i…
View article: Breakup of viscous liquid bridges on solid surfaces
Breakup of viscous liquid bridges on solid surfaces Open
The breakup dynamics of viscous liquid bridges on solid surfaces is studied experimentally. It is found that the dynamics bears similarities to the breakup of free liquid bridges in the viscous regime. Nevertheless, the dynamics is signifi…
View article: Surface Topology of Redox‐ and Thermoresponsive Nanogel Droplets
Surface Topology of Redox‐ and Thermoresponsive Nanogel Droplets Open
Hydrogels are usually depicted as a homogenous polymer block with a distinct surface. While defects in the polymer structure are looked into frequently, structural irregularities on the hydrogel surface are often neglected. In this work, t…
View article: Nominally identical microplastic models differ greatly in their particle-cell interactions
Nominally identical microplastic models differ greatly in their particle-cell interactions Open
Due to the abundance of microplastics in the environment, research about its possible adverse effects is increasing exponentially. Most studies investigating the effect of microplastics on cells still rely on commercially available polysty…
View article: Author Correction: Dynamic matrices with DNA-encoded viscoelasticity for cell and organoid culture
Author Correction: Dynamic matrices with DNA-encoded viscoelasticity for cell and organoid culture Open
View article: Data and code for "Nominally identical microplastic models differ greatly in their particle-cell interactions"
Data and code for "Nominally identical microplastic models differ greatly in their particle-cell interactions" Open
This dataset provides the data and code for the study “Nominally identical microplastic models differ greatly in their particle-cell interactions”. Due to the size of the raw data, they were deposited only for one particle type (PX). With …
View article: Data and code for "Nominally identical microplastic models differ greatly in their particle-cell interactions"
Data and code for "Nominally identical microplastic models differ greatly in their particle-cell interactions" Open
This dataset provides the data and code for the study “Nominally identical microplastic models differ greatly in their particle-cell interactions”. Due to the size of the raw data, they were deposited only for one particle type (PX). With …
View article: The role of impurities in porous carbons for bioinspired iontronic devices
The role of impurities in porous carbons for bioinspired iontronic devices Open
Ion-controlled electronics use biocompatible electrolytes to realize multiple functions, such as ionic resistors, ionic diodes, and ionic transistors, endowing them with huge biologic application potentials, ranging from sensing to informa…
View article: Spreading of a viscoelastic drop on a solid substrate
Spreading of a viscoelastic drop on a solid substrate Open
We study the spreading of viscous and viscoelastic drops on solid substrates with different wettability. In the early stages of spreading, we find that the viscoelastic drop spreads with faster and a different power law than the Newtonian …
View article: Dynamic matrices with DNA-encoded viscoelasticity for cell and organoid culture
Dynamic matrices with DNA-encoded viscoelasticity for cell and organoid culture Open
Three-dimensional cell and organoid cultures rely on the mechanical support of viscoelastic matrices. However, commonly used matrix materials lack control over key cell-instructive properties. Here we report on fully synthetic hydrogels ba…
View article: Adsorption layer and flow within liquid meniscus in forced dewetting
Adsorption layer and flow within liquid meniscus in forced dewetting Open
In surfactant solutions, the bulk hydrodynamic flow couples to extensional/compressional surface flows due to Marangoni stresses induced at the interface. With increasing surfactant concentration, these Marangoni stresses can suppress the …
View article: Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case
Dynamic wetting properties of PDMS pseudo-brushes: Four-phase contact point dynamics case Open
We investigate the wetting properties of PDMS (Polydimethylsiloxane) pseudo-brush anchored on glass substrates. These PDMS pseudo-brushes exhibit a significantly lower contact angle hysteresis compared to hydrophobic silanized substrates. …
View article: Wetting and friction behavior of chemically bonded <scp>PA‐PTFE</scp>‐oil compounds
Wetting and friction behavior of chemically bonded <span>PA‐PTFE</span>‐oil compounds Open
Polyamide (PA), polytetrafluoroethylene (PTFE), and olefinic oils are incompatible. High‐energy radiation in the presence of oxygen can break the PTFE chain, generating hydrophilic functional groups (COF, COOH) and peroxy‐radicals. Based o…
View article: How droplets dry on stretched soft substrates
How droplets dry on stretched soft substrates Open
Liquid droplets usually wet smooth and homogeneous substrates isotropically. Recent research works have revealed that droplets sit, slide and spread anisotropically on uniaxially stretched soft substrates, showing an enhanced wettability a…
View article: The ζ-potential of nominally identical microplastics determines their interactions with cells
The ζ-potential of nominally identical microplastics determines their interactions with cells Open
As microplastic particles (MPPs) are ubiquitously present in the environment, concerns about possible adverse effects on ecosystems, organisms, and human health were raised. However, the results of previous toxicological studies were often…
View article: Dynamic matrices with DNA-encoded viscoelasticity for advanced cell and organoid culture
Dynamic matrices with DNA-encoded viscoelasticity for advanced cell and organoid culture Open
3D cell and organoid cultures, which allow in vitro studies of organogenesis and carcinogenesis, rely on the mechanical support of viscoelastic matrices. However, commonly used matrix materials lack rational design and control over key cel…
View article: Molecular Transport within Polymer Brushes: A FRET View at Aqueous Interfaces
Molecular Transport within Polymer Brushes: A FRET View at Aqueous Interfaces Open
Molecular permeability through polymer brush chains is implicated in surface lubrication, wettability, and solute capture and release. Probing molecular transport through polymer brushes can reveal information on the polymer nanostructure,…
View article: Electronic Laboratory Notebook: A lazy approach
Electronic Laboratory Notebook: A lazy approach Open
Good research data management is essential in modern-day lab work. Various solutions exist that are either highly specific or need a significant effort to be customized appropriately. This paper presents an integrated solution for individu…
View article: Concentration gradients in evaporating binary droplets probed by spatially resolved Raman and NMR spectroscopy
Concentration gradients in evaporating binary droplets probed by spatially resolved Raman and NMR spectroscopy Open
Significance Imagine you spill your drink and miss some spots when cleaning up. The next morning you notice that the stains look quite different on different surfaces. What has happened? In droplets of liquid mixtures, the components evapo…
View article: Capillary filling in drop merging: Dynamics of the four-phase contact point
Capillary filling in drop merging: Dynamics of the four-phase contact point Open
The merging of immiscible drops differs significantly from the merging of miscible drops due to the formation of a liquid–liquid interface between drops. The immiscibility requires the formation of a four-phase contact point, where the dro…