Search Results - "Koenig, Peter H"
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Molecular Dynamics Simulations of Sodium Dodecyl Sulfate Micelles in WaterThe Effect of the Force Field
Published in The journal of physical chemistry. B (10-04-2014)“…Molecular dynamic (MD) simulations of preassembled sodium dodecyl sulfate (SDS) micelles are carried out using three versions of GROMOS, as well as CHARMM36,…”
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Atomistic simulations of pH-dependent self-assembly of micelle and bilayer from fatty acids
Published in The Journal of chemical physics (21-11-2012)“…Detailed knowledge of the self-assembly and phase behavior of pH-sensitive surfactants has implications in areas such as targeted drug delivery. Here we…”
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Asymmetric Electrostatic and Hydrophobic–Hydrophilic Interaction Forces between Mica Surfaces and Silicone Polymer Thin Films
Published in ACS nano (26-11-2013)“…We have synthesized model hydrophobic silicone thin films on gold surfaces by a two-step covalent grafting procedure. An amino-functionalized gold surface…”
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Nonmonotonic Scission and Branching Free Energies as Functions of Hydrotrope Concentration for Charged Micelles
Published in Physical review letters (20-07-2018)“…Using coarse-grained molecular dynamics simulations and an umbrella sampling method that uses local surfactant density as a reaction coordinate, we directly…”
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Boundary Lubrication Performance of Polyelectrolyte–Surfactant Complexes on Biomimetic Surfaces
Published in Langmuir (16-04-2024)“…Aqueous mixtures of oppositely charged polyelectrolytes and surfactants are useful in many industrial applications, such as shampoos and hair conditioners. In…”
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Multiscale Modeling of the Effects of Salt and Perfume Raw Materials on the Rheological Properties of Commercial Threadlike Micellar Solutions
Published in The journal of physical chemistry. B (23-03-2017)“…We link micellar structures to their rheological properties for two surfactant body-wash formulations at various concentrations of salts and perfume raw…”
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Coarse-grained molecular models of the surface of hair
Published in Soft matter (02-03-2022)“…We present a coarse-grained molecular model of the surface of human hair, which consists of a supported lipid monolayer, in the MARTINI framework. Using…”
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Scission Free Energies for Wormlike Surfactant Micelles: Development of a Simulation Protocol, Application, and Validation for Personal Care Formulations
Published in Langmuir (30-01-2018)“…We present a scheme to calculate wormlike micelle scission free energies from a potential of mean force (PMF) derived from a weighted histogram analysis method…”
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Nanoscale friction of biomimetic hair surfaces
Published in Nanoscale (13-04-2023)“…We investigate the nanoscale friction between biomimetic hair surfaces using chemical colloidal probe atomic force microscopy experiments and nonequilibrium…”
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Self-Assembly and Bilayer–Micelle Transition of Fatty Acids Studied by Replica-Exchange Constant pH Molecular Dynamics
Published in Langmuir (03-12-2013)“…Recent interest in the development of surfactant-based nanodelivery systems targeting tumor sites has sparked our curiosity in understanding the detailed…”
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Rates of cavity filling by liquids
Published in Proceedings of the National Academy of Sciences - PNAS (07-08-2018)“…Understanding the fundamental wetting behavior of liquids on surfaces with pores or cavities provides insights into the wetting phenomena associated with rough…”
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The shape and dynamics of deformations of viscoelastic fluids by water droplets
Published in Journal of colloid and interface science (15-11-2020)“…[Display omitted] Many studies on the deformation of soft films by liquids confirmed the increase in the radius of the deformation and the decrease in the…”
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Nonane and Hexanol Adsorption in the Lamellar Phase of a Nonionic Surfactant: Molecular Simulations and Comparison to Ideal Adsorbed Solution Theory
Published in The journal of physical chemistry. B (02-06-2022)“…Adsorption of n-nonane/1-hexanol (C9/C6OH) mixtures into the lamellar phase formed by a 50/50 w/w triethylene glycol mono-n-decyl ether (C10E3)/water system…”
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Automated Measurement of Spatially Resolved Hair–Hair Single Fiber Adhesion
Published in Langmuir (03-12-2019)“…The adhesion force between individual human hair fibers in a crosshair geometry was measured by observing their natural bending and adhesive jumps out of…”
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Contact Angle and Adhesion Dynamics and Hysteresis on Molecularly Smooth Chemically Homogeneous Surfaces
Published in Langmuir (26-09-2017)“…Measuring truly equilibrium adhesion energies or contact angles to obtain the thermodynamic values is experimentally difficult because it requires…”
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Probing Additive Loading in the Lamellar Phase of a Nonionic Surfactant: Gibbs Ensemble Monte Carlo Simulations Using the SDK Force Field
Published in Langmuir (17-07-2018)“…Understanding solute uptake into soft microstructured materials, such as bilayers and worm-like and spherical micelles, is of interest in the pharmaceutical,…”
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Comment on “Phase Behavior of Ternary Mixtures of Water–Vanillin–Ethanol for Vanillin Extraction via Dissipative Particle Dynamics”
Published in Journal of chemical and engineering data (12-11-2015)“…This comment addresses a few issues of concern regarding the use of Dissipative Particle Dynamics (DPD) to characterize molecular phase diagrams and identify…”
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Simulating pH Titration of a Single Surfactant in Ionic and Nonionic Surfactant Micelles
Published in The journal of physical chemistry. B (22-12-2011)“…Calculation of surfactant pK a’s in micelles is a challenging task using traditional electrostatic methods due to the lack of structural data and information…”
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Molecular dynamics simulations of ionic and nonionic surfactant micelles with a generalized born implicit-solvent model
Published in Journal of computational chemistry (01-08-2011)“…In recent years, all‐atom and coarse‐grained models have been developed andapplied to simulations of micelles and biological membranes. Here, we explorethe…”
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Predicting proton titration in cationic micelle and bilayer environments
Published in The Journal of chemical physics (28-08-2014)“…Knowledge of the protonation behavior of pH-sensitive molecules in micelles and bilayers has significant implications in consumer product development and…”
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