English
Related papers

Related papers: Isotropic-nematic phase transition in amyloid fibr…

200 papers

Orientational dynamics in the isotropic phase of a comb-shaped nematic polymer with mesogenic and functional side groups was studied using the Kerr effect and dielectric spectroscopy. For the first time, it was found that in a mesogenic…

Soft Condensed Matter · Physics 2019-12-24 V. B. Rogozhin , S. G. Polushin , I. E. Lezova , G. E. Polushina , E. I. Ryumtsev , N. A. Nikonorova

We propose and study a two-orbital lattice extension of the Sachdev-Ye-Kitaev model in the large-$N$ limit. The phase diagram of this model features a high temperature isotropic strange metal which undergoes a first-order thermal transition…

Strongly Correlated Electrons · Physics 2023-07-12 Andrew Hardy , Arijit Haldar , Arun Paramekanti

We investigate the kinetics of phase separation for a mixture of rodlike viruses (fd) and polymer (dextran), which effectively constitutes a system of attractive rods. This dispersion is quenched from a flow-induced fully nematic state into…

Soft Condensed Matter · Physics 2009-11-11 M. Paul Lettinga , Kyongok Kang , Arnout Imhof , Didi Derks , Jan K. G. Dhont

The interplay of nematic order and phase separation in solutions of semiflexible polymers in solvents of variable quality is investigated by density functional theory (DFT) and molecular dynamics (MD) simulations. We studied coarse-grained…

Soft Condensed Matter · Physics 2019-09-04 Jiarul Midya , Sergei A. Egorov , Kurt Binder , Arash Nikoubashman

We present computer simulations of long thin hard spherocylinders in a narrow planar slit. We observe a transition from the isotropic to a nematic phase with quasi-long-range orientational order upon increasing the density. This phase…

Soft Condensed Matter · Physics 2009-11-10 Marco Cosentino Lagomarsino , Marjolein Dijkstra , Marileen Dogterom

Protein amyloid fibrils are a form of linear protein aggregates that are implicated in many neurodegenerative diseases. Here, we study the dynamics of amyloid fibril elongation by performing Langevin dynamic simulations on a coarse-grained…

Biological Physics · Physics 2009-10-06 Chiu Fan Lee , James Loken , Letitia Jean , David J. Vaux

We review the models developed and techniques used in recent years to study the kinetics of phase ordering in a class of complex fluids, namely, ternary microemulsions and micellar solutions.

Soft Condensed Matter · Physics 2016-11-03 Debashish Chowdhury , Prabal K. Maiti

Recent demonstrations of extraordinary stabilization of proteins in mobile protic [1] and aprotic [2] ionic liquid solutions at ambient temperatures have raised hopes of new biopreservation and drug transportation technologies. Here we…

Biological Physics · Physics 2007-10-23 Nolene Byrne , Jean-Philippe Belieres , C. Austen Angell

Using overdamped Brownian dynamics simulations we investigate the isotropic-nematic (IN) transition of self-propelled rods in three spatial dimensions. For two well-known model systems (Gay-Berne potential and hard spherocylinders) we find…

We introduce a lattice model for active nematic composed of self-propelled apolar particles,study its different ordering states in the density-temperature parameter space, and compare with the corresponding equilibrium model. The active…

Soft Condensed Matter · Physics 2017-07-26 Rakesh Das , Manoranjan Kumar , Shradha Mishra

Binary mixtures of semiflexible polymers with the same chain length but different persistence lengths separate into two coexisting different nematic phases when the osmotic pressure of the lyotropic solution is varied. Molecular Dynamics…

Soft Condensed Matter · Physics 2020-09-15 Andrey Milchev , Sergei A. Egorov , Jiarul Midya , Kurt Binder , Arash Nikoubashman

Using molecular simulations and classical density functional theory, we study the liquid-crystalline phase behaviour of a series of bent rod-like mesogens with a controlled degree of chirality introduced through a twist at the centre of the…

Soft Condensed Matter · Physics 2025-11-18 Anna Ashkinazi , Hemani Chhabra , Anouar El Moumane , Maxime M. C. Tortora , Jonathan P. K. Doye

We present an experimental study of the isotropic-nematic phase transition in an aqueous mixture of charged semi-flexible rods (fd virus) and neutral polymer (Dextran). A complete phase diagram is measured as a function of ionic strength…

Soft Condensed Matter · Physics 2009-11-10 Zvonimir Dogic , Kirstin Purdy , Eric Grelet , Marie Adams , Seth Fraden

We present a simplified molecular model of mesogenic dimers consisting of two identical uniaxial mesogenic cores separated by a fixed-length spacer and allowed to assume only two, statistically equivalent, conformations which are non-planar…

Soft Condensed Matter · Physics 2016-07-26 Alexandros G. Vanakaras , Demetri J. Photinos

An intermediate nematic phase is proposed for the interpretation of recent experimental results on phase biaxiality in bent-core nematics. The phase is macroscopically uniaxial but consists of microscopic biaxial, and possibly polar,…

Soft Condensed Matter · Physics 2009-04-28 Alexandros G. Vanakaras , Demetri J. Photinos

Weakly attractive interactions between the tips of rod-like colloidal particles affect their liquid-crystal phase behaviour due to a subtle interplay between enthalpy and entropy. Here, we employ molecular dynamics simulations on…

Soft Condensed Matter · Physics 2019-10-16 Mariana Oshima Menegon , Guido L. A. Kusters , Paul van der Schoot

Highly anisotropic "nematically ordered" aerogel induces global uniaxial anisotropy in superfluid 3He. The anisotropy lowers symmetry of 3He in aerogel from spherical to axial. As a result instead of one transition temperature in the state,…

Disordered Systems and Neural Networks · Physics 2015-06-18 I. A. Fomin

We study the influence of fluctuations in molecular shape on the stability of the biaxial nematic phase by generalizing the mean field model of Mulder and Ruijgrok [Physica A {\bf 113}, 145 (1982)]. We limit ourselves to the case when the…

Soft Condensed Matter · Physics 2011-11-09 Lech Longa , Grzegorz Pająk , Thomas Wydro

The significance of thermal fluctuations on nucleation in structural first-order phase transitions has been examined. The prototype case of martensitic transitions has been experimentally investigated by means of acoustic emission…

Materials Science · Physics 2016-08-31 Francisco J. Perez-Reche , Eduard Vives , Lluis Manosa , Antoni Planes

We study the formation of an electronic nematic phase characterized by a broken point-group symmetry in interacting fermion systems within the weak coupling theory. As a function of interaction strength and chemical potential, the phase…

Strongly Correlated Electrons · Physics 2007-05-23 Igor Khavkine , Chung-Hou Chung , Vadim Oganesyan , Hae-Young Kee