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Langmuir monolayers are advantageous systems used to investigate how lipid membranes get involved in the physiology of many living structures, such as collapse phenomena in alveolar structures. Much work focuses on characterizing the…

Soft Condensed Matter · Physics 2024-01-22 A. R. Carotenuto , A. Gaffney , K. Y. C. Lee , L. Pocivavsek , M. Fraldi , L. Deseri

This communication reports the surface pressure vs. area per molecule isotherm and Fluorescence Imaging Microscopic studies of the formation of domain structure in the mixed Langmuir monolayer of RhB and Stearic acid (SA) at the air water…

Materials Science · Physics 2011-06-21 S. A. Hussain , S. Chakraborty , D. Bhattacharjee

We monitored the action of phospholipase A2 (PLA2) on L- and D-dipalmitoylphosphatidylcholine (DPPC) Langmuir monolayers by mounting a Langmuir-trough on a wide-field fluorescence microscope with single molecule sensitivity. This made it…

Biological Physics · Physics 2010-06-17 M. Gudmand , S. Rocha , N. S. Hatzakis , K. Peneva , K. Muellen , D. Stamou , H. Uji-I , J. Hofkens , T. Bjornholm , T. Heimburg

We investigate the behavior of identical dipolar fermions with aligned dipole moments in two-dimensional multilayers at zero temperature. We consider density instabilities that are driven by the attractive part of the dipolar interaction…

Quantum Gases · Physics 2017-03-01 M. Callegari , M. M. Parish , F. M. Marchetti

Lipid domains are found in systems such as multi-component bilayer membranes and single component monolayers at the air-water interface. It was shown by Andelman et al. (Comptes Rendus 301, 675 (1985)) and McConnell et al. (Phys. Chem. {\bf…

Soft Condensed Matter · Physics 2007-05-23 Alex Travesset

Stripe states in multilayer systems with perpendicular polarization are investigated by analytical calculations within a general continuum approach, applicable to ferromagnetic, ferroelectric, or ferroelastic nanoscale superlattices. The…

Materials Science · Physics 2007-05-23 Alexei N. Bogdanov , Ulrich K. Roessler

We formulate a simple effective model to describe molecular interactions in a lipid monolayer. The model represents lipid molecules in terms of two-dimensional anisotropic particles on the plane of the monolayer. These particles interact…

Soft Condensed Matter · Physics 2019-10-02 E. Velasco , L. Mederos

In lieu of abstract, first paragraph reads: Galimzyanov et al. [1] find that line tension between thick liquid-ordered ($L_{o}$) and thinner liquid-disordered ($L_{d}$) registered lipid bilayer phases is minimised by an asymmetric "slip…

Soft Condensed Matter · Physics 2016-04-14 John J. Williamson , Peter D. Olmsted

Finite domains of a Langmuir monolayer in a phase with tilted molecules can be modeled by a simple elastic free energy of an XY order parameter with isotropic and anisotropic line tension terms. The domains can and often do contain…

Soft Condensed Matter · Physics 2016-08-31 David Pettey , T. C. Lubensky

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 analyse the coexistence of superfluid and density wave (stripe) order in a quasi-two-dimensional gas of dipolar fermions aligned by an external field. Remarkably, the anisotropic nature of the dipolar interaction allows for such a…

Quantum Gases · Physics 2015-06-10 Zhigang Wu , Jens K. Block , Georg M. Bruun

The mean-field study of the stripe phases of t-t'-U Hubbard model confirms formation of the "impurity" subbands of states localized on domain walls. For bond-aligned stripes it is shown that segments of the Fermi surfaces (FS) in antinodal…

Strongly Correlated Electrons · Physics 2009-11-10 M. Ya. Ovchinnikova

At the air/water interface, 4,-8-alkyl[1,1,-biphenyl]-4-carbonitrile (8CB) domains with different thicknesses coexist in the same Langmuir film, as multiple bilayers on a monolayer. The edge dislocation at the domain boundary leads to line…

Soft Condensed Matter · Physics 2009-11-13 Lu Zou , Ji Wang , Prem Basnet , Elizabeth K. Mann

Langmuir monolayers are modeled as systems of short chains, which are confined to a planar surface at one end, but free to move within the plane. The phase behavior is calculated in a mean field approximation, which combines the self…

Chemical Physics · Physics 2009-10-30 F. Schmid

We report on the development of a new model of alveolar air-tissue interface on a chip. The model consists of an array of suspended hexagonal monolayers of gelatin nanofibers supported by microframes and a microfluidic device for the patch…

Soft Condensed Matter · Physics 2021-09-21 Milad Radiom , Yong He , Juan Peng , Armelle Baeza-Squiban , Jean-Franccois Berret , Yong Chen

A Langmuir film is a molecularly thin film on the surface of a fluid; we study the evolution of a Langmuir film with two co-existing fluid phases driven by an inter-phase line tension and damped by the viscous drag of the underlying…

Soft Condensed Matter · Physics 2009-11-13 J. R. Wintersmith , L. Zou , A. J. Bernoff , J. C. Alexander , J. A. Mann , E. E. Kooijman , E. K. Mann

We investigate the energetic ground states of a model two-phase system with 1/r^3 dipolar interactions in two dimensions. The model exhibits spontaneous formation of two kinds of periodic domain structure. A striped domain structure is…

Condensed Matter · Physics 2009-10-28 Kwok-On Ng , David Vanderbilt

We obtain via Monte Carlo simulations the low temperature charge configurations in the lattice Coulomb gas on square lattices for charge filling ratio $f$ in the range $1/3 < f < 1/2 $. We find a simple regularity in the low temperature…

Statistical Mechanics · Physics 2009-11-07 Sung Jong Lee , Jong-Rim Lee , Bongsoo Kim

Statistical properties of the scrape-off layer (SOL) plasma fluctuations are studied in ohmically heated plasmas in the Alcator C-Mod tokamak. For the first time, plasma fluctuations as well as parameters that describe the fluctuations are…

Plasma Physics · Physics 2020-11-11 R. Kube , A. Theodorsen , O. E. Garcia , D. Brunner , B. LaBombard , J. L. Terry

A great variety of biologically relevant monolayers present phase coexistence characterized by domains formed by lipids in an ordered phase state dispersed in a continuous, disordered phase. The difference in surface densities between these…

Biological Physics · Physics 2018-02-19 Elena Rufeil Fiori , Natalia Wilke , Adolfo J. Banchio
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