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The peculiar linear temperature-dependent swelling of core-shell microgels has been conjectured to be linked to the core-shell architecture combining materials of different transition temperatures. Here the structure of pNIPMAM-core and…

By reverting to spectroscopy, changes in the biological environment of a fluorescent probe can be monitored and the presence of various phases of the surrounding lipid bilayer membranes can be detected. This study highlights the important…

Soft Condensed Matter · Physics 2019-10-23 S. Knippenberg , G. Fabre , S. Osella , F. Di Meo , M. Paloncýová , M. Ameloot , P. Trouillas

An aboveground 60-kg reactor-antineutrino detector prototype, comprised of a 2-dimensional array of 36 $^{6}$Li-doped pulse shape sensitive plastic scintillator bars, is described. Each bar is 50~cm long with a square cross section of…

We describe a simple coarse-grained model which is suited to study lipid layers and their phase transitions. Lipids are modeled by short semiflexible chains of beads with a solvophilic head and a solvophobic tail component. They are forced…

Biological Physics · Physics 2007-08-06 F. Schmid , D. Duchs , O. Lenz , B. West

A model is presented of s-wave np elastic scattering as proceeding through an intermediate, off-shell dibaryon d*, with corrections to the npd vertex and d* propagator. The model relies on plausible conjectures and hypotheses to match…

Nuclear Theory · Physics 2017-11-09 R. W. Hackenburg

Liquid water is not only of obvious importance but also extremely intriguing, displaying many anomalies that still challenge our understanding of such an a priori simple system. The same is true when looking at nanoconfined water: The…

Soft Condensed Matter · Physics 2016-06-29 Jon Zubeltzu , Fabiano Corsetti , M. V. Fernandez-Serra , Emilio Artacho

We employ 100 ns molecular dynamics simulations to study the influence of cholesterol on structural and dynamic properties of dipalmitoylphosphatidylcholine (DPPC) bilayers in the fluid phase. The effects of the cholesterol content on the…

Soft Condensed Matter · Physics 2009-11-10 Emma Falck , Michael Patra , Mikko Karttunen , Marja T. Hyvonen , Ilpo Vattulainen

We develop theory and computational methods to investigate particle inclusions embedded within curved lipid bilayer membranes. We consider the case of spherical lipid vesicles where inclusion particles are coupled through (i) intramembrane…

Soft Condensed Matter · Physics 2023-02-28 Jon Karl Sigurdsson , Paul J. Atzberger

We perform ab-initio Quantum Monte Carlo simulations of para-hydrogen (pH$_2$) at $T=0$ K confined in carbon nanotubes (CNT) of different radii. The radial density profiles show a strong layering of the pH$_2$ molecules which grow, with…

Other Condensed Matter · Physics 2016-12-21 Maurizio Rossi , Francesco Ancilotto

We present a study of the dynamics and structural changes for trans-1,2-dichloroethylene between high and low density liquids using neutron scattering techniques (diffraction, small angle neutron scattering and time of flight spectroscopy)…

Motivated by experimental and numerical studies revealing that discoidal high-density lipoprotein (HDL) particles may adopt flat elliptical and nonplanar saddle-like configurations, it is hypothesized that these might represent stabilized…

Soft Condensed Matter · Physics 2013-07-23 Mohsen Maleki , Eliot Fried

We describe simulations of Proteins and artificial pseudo-molecules interacting and shaping lipid bilayer membranes. We extract protein diffusion Parameters, membrane deformation profiles and the elastic properties of the used membrane…

Biological Physics · Physics 2017-12-08 Jan Henning Peters , Carsten Gräser , Rupert Klein

We study the influence of truncating the electrostatic interactions in a fully hydrated pure dipalmitoylphosphatidylcholine (DPPC) bilayer through 20 ns molecular dynamics simulations. The computations in which the electrostatic…

Soft Condensed Matter · Physics 2009-11-07 M. Patra , M. Karttunen , M. Hyvonen , E. Falck , P. Lindqvist , I. Vattulainen

Giant unilamellar vesicles (GUVs) composed of as few as three lipid species can phase separate into small-scale lipid domains with stripes and dots patterns. These patterns have been experimentally characterized in terms of how their size…

Soft Condensed Matter · Physics 2025-05-21 Qiwei Yu , Andrej Košmrlj

We report relaxation dynamics of glycerol-water mixtures as probed by megahertz-to-terahertz dielectric spectroscopy in a frequency range from 50 MHz to 0.5 THz at room temperature. The dielectric relaxation spectra reveal several…

Chemical Physics · Physics 2019-09-04 Ali Charkhesht , Djamila Lou , Ben Sindle , Chengyuan Wen , Shengfeng Cheng , Nguyen Q. Vinh

Binary mixtures of water with lower alcohols display non-linear phase behaviour upon mixing which are attributed to potential cluster formation at molecular level. Unravelling such elusive structures requires the investigation of…

Soft Condensed Matter · Physics 2023-10-09 Riccardo Morbidini , Robert M. Edkins , Mark Devonport , Gøran Nilsen , Tilo Seydel , Katharina Edkins

Combining extensive molecular dynamics simulations of lipid bilayer systems of varying chemical composition with single-trajectory analyses we systematically elucidate the stochastic nature of the lipid motion. We observe subdiffusion over…

Soft Condensed Matter · Physics 2015-06-11 Jae-Hyung Jeon , Hector Martinez-Seara Monne , Matti Javanainen , Ralf Metzler

The bending rigidity $k_c$ of bilayer vesicles self-assembled from amphiphilic diblock copolymers has been measured using single and dual-micropipet techniques. These copolymers are nearly a factor of 5 greater in hydrophobic membrane…

Soft Condensed Matter · Physics 2007-05-23 H. Bermudez , D. A. Hammer , D. E. Discher

We have characterized the dynamics of the polar nanoregions in Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PMN) through high-resolution neutron backscattering and spin-echo measurements of the diffuse scattering cross section. We find that the diffuse…

Materials Science · Physics 2015-05-18 C. Stock , L. Van Eijck , P. Fouquet , M. Maccarini , P. M. Gehring , Guangyong Xu , H. Luo , X. Zhao , J. -F. Li , D. Viehland

Response of lipid bilayers to external mechanical stimuli is an active area of research with implications for fundamental and synthetic cell biology. However, there is a lack of tools for systematically imposing mechanical strains and…