Article
Physics, Fluids & Plasmas
Grace H. Zhang, David R. Nelson
Summary: This study examines the ordered defect structures embedded in two-dimensional crystals, where dislocations form one-dimensional lattices. Two one-dimensional phase transitions are identified in dislocation pileups: thermal depinning transition and melting transition from a quasi-long-range ordered floating-defect solid phase to a defect liquid phase. Transition temperatures are observed through the one-dimensional structure factor, showing changes in Bragg peaks as one approaches the two-dimensional melting transition of the host crystal.
Article
Physics, Fluids & Plasmas
Xiaoyu Zheng, Obeng Appiagyei Addai, Peter Palffy-Muhoray
Summary: Studying rodlike particles interacting via long-range repulsive potential, it was found that at low temperatures, the particles tend to form stripes with alternating orientations.
Article
Optics
Jonas von Milczewski, Felix Rose, Richard Schmidt
Summary: We study the phase diagram of strongly coupled two-dimensional Bose-Fermi mixtures interacting with attractive short-range potentials as a function of the particle densities. We develop a functional-renormalization-group approach that accounts for the bound-state physics arising from the extended Frohlich Hamiltonian. By including three-body correlations, we reproduce the polaron-to-molecule transition and predict spectral functions and quasiparticle properties. We find that at finite boson density, fermions and bosons can form a fermionic composite with a well-defined Fermi surface, and as the boson density increases, there is a transition into a strongly correlated phase.
Article
Mathematics, Applied
Rong Rong
Summary: We establish the existence, uniqueness, and singularities of coupled spin polarized transport equations in two dimensions. This coupled system includes Landau-Lifshitz-Maxwell equation, and a quasilinear parabolic equation describing the diffusion of spin accumulation. Based on the Leray-Schauder fixed point theory and Moser iterative method, we strictly prove the existence of a weak regular solution except at most finite singular points.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Mechanics
M. C. Dallaston, M. A. Fontelos, M. A. Herrada, J. M. Lopez-Herrera, J. Eggers
Summary: In this study, a generalized equation of motion for a thin film of liquid on a solid substrate was used as a model system to investigate the formation of singularities in space dimensions greater than one. By varying the controlling exponent of long-ranged forces and the exponent of nonlinear mobility, the structure of singularities as the film thickness approaches zero was predicted. The spatial structure of rupture may either be 'pointlike' or 'quasi-one-dimensional', and the scaling of the profile with time may be either strictly self-similar or discretely self-similar, potentially chaotic.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Astronomy & Astrophysics
Pablo Bueno, Pablo A. Cano, Javier Moreno, Guido van der Velde
Summary: A plethora of new analytic black holes and globally regular horizonless spacetimes in three dimensions have been discovered, with solutions involving a single real scalar field. The new metrics are continuous generalizations of the BTZ solution, solving the Einstein gravity equations corrected by a new family of densities. Some solutions describe black holes with one or several horizons, while others have curvature singularities or are completely regular. Additionally, there are solutions describing globally regular and horizonless geometries.
Article
Mathematics, Applied
Jiahui Fang, Junyu Lin
Summary: In this recent paper, we explore the properties of weak solutions to the Dirichlet problem in a system with cubic nonlinearities originating from biaxial nematic liquid crystals in two dimensions. We firstly obtain the smoothness of weak solutions and then investigate the constant boundary value problems in this system, resulting in a Liouville-type theorem.
APPLIED MATHEMATICS LETTERS
(2022)
Review
Biochemistry & Molecular Biology
Nancy C. Forero-Martinez, Robinson Cortes-Huerto, Antonio Benedetto, Pietro Ballone
Summary: This review focuses on the thermodynamics, structures, and applications of thermoresponsive systems, specifically organic salts of low melting temperatures. These systems undergo a temperature-driven transition between a homogeneous liquid state and a biphasic state, with potential applications in extraction, separation, and catalysis.
Article
Physics, Multidisciplinary
Maxim O. Lavrentovich, Dima Bolmatov, Jan-Michael Y. Carrillo
Summary: Using molecular dynamics simulations, the researchers studied a driven, nonadditive binary mixture of spherical particles in a two-dimensional explicit solvent. They found that without a drive, the mixture phase separates and coarsens with an Ising-like conserved dynamics. However, when a drive is applied, coarsening is arrested and large density fluctuations occur, with domains of characteristic size forming. The researchers also discovered that these domains are anisotropic and can be oriented parallel or perpendicular to the drive direction. They emphasize the importance of introducing explicit solvent particles to break the Galilean invariance of the system.
NEW JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Robert Forschner, Julius Agamemnon Knoeller, Anna Zens, Wolfgang Frey, Yann Molard, Sabine Laschat
Summary: Inspired by the supramolecular architecture of cornflower blue, we have developed luminescent flavylium salts with lipophilic alkoxy or thioether side chains that self-assemble into liquid crystalline phases. This paper highlights the fundamental aspects of anthocyanin, the natural pigment responsible for cornflower blue, and our recent advancements in novel liquid crystalline emissive dyes. The topics covered include the general synthesis of flavylium salts and variations of flavylium intermolecular liquid crystals (ILCs), including the specific tuning of their mesomorphic and photophysical behavior.
Article
Chemistry, Physical
Jannick Guschlbauer, Leszek Niedzicki, Litwin Jacob, Edyta Rzeszotarska, Damian Pociecha, Piotr Kaszynski
Summary: A new approach to anisotropic liquid electrolytes is explored using a non-ionic liquid crystalline host doped with a lithium salt. The concentration of the ionic additives does not significantly affect the stability of the mesophase, but expands the ion conducting channels. The conductivity and activation energy of the electrolyte vary with temperature and lithium ion concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Salvatore Marullo, Giuseppe Gallo, Giulia Infurna, Nadka Tz. Dintcheva, Francesca D'Anna
Summary: We prepared and characterized supramolecular ionic liquid gels based on biopolymer mixtures without the need for a cross-linking agent or acid treatment. The gels showed notable properties influenced by the ionic liquid anion. They exhibited higher antioxidant ability and bactericidal activity compared to their individual components. The gel based on a chitosan:chitin mixture in the IL [bmim][Cl] had the fastest killing effect against E. coli, with almost complete eradication of bacterial cells within 30 minutes. We also observed an inverse relationship between the antioxidant and antimicrobial activities of the gels.
Article
Materials Science, Multidisciplinary
Sneha Malunavar, Xiaoen Wang, Faezeh Makhlooghiazad, Michel Armand, Montserrat Galceran, Patrick C. Howlett, Maria Forsyth
Summary: The study focuses on the development of highly conductive and safe ionogel electrolytes for sodium-ion batteries, demonstrating promising results in terms of ionic conductivity and performance in Na-battery applications.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Lars Esser, Roberto Macchieraldo, Roman Elfgen, Melanie Sieland, Bernd Michael Smarsly, Barbara Kirchner
Summary: The competition between water and TiCl4 in interacting with [Cl]- affects the cation-anion interaction strength, while water has a greater impact on the molecular network compared to TiCl4.
Article
Chemistry, Medicinal
Kornel Ozvoldik, Thomas Stockner, Elmar Krieger
Summary: The transition from 3D glasses to VR headsets in the industry has brought challenges for modelers. However, a novel software implementation using a VR headset at a desk has been introduced, providing a relaxing and immersive workplace. This software, called YASARA Model, combines VR functionality with a molecular graphics engine and offers additional features and interactive tutorials.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2023)
Article
Physics, Condensed Matter
Joerg Bartnick, Marco Heinen, Alexei V. Ivlev, Hartmut Loewen
JOURNAL OF PHYSICS-CONDENSED MATTER
(2016)
Article
Physics, Multidisciplinary
Ian Williams, Erdal C. Oguz, Thomas Speck, Paul Bartlett, Hartmut Loewen, C. Patrick Royall
Article
Physics, Multidisciplinary
S. Babel, H. Loewen, A. M. Menzel
Editorial Material
Physics, Multidisciplinary
Gerhard Gompper, Clemens Bechinger, Stephan Herminghaus, Rolf Isele-Holder, U. Benjamin Kaupp, Hartmut Loewen, Holger Stark, Roland G. Winkler
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2016)
Review
Physics, Multidisciplinary
Hartmut Loewen
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2016)
Article
Chemistry, Physical
Frank Smallenburg, Hartmut Loewen
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Christian Hoell, Hartmut Loewen
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Joerg Bartnick, Andreas Kaiser, Hartmut Loewen, Alexei V. Ivlev
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Andreas M. Menzel, Arnab Saha, Christian Hoell, Hartmut Loewen
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
David Richard, Hartmut Loewen, Thomas Speck
Article
Multidisciplinary Sciences
Celia Lozano, Borge ten Hagen, Hartmut Loewen, Clemens Bechinger
NATURE COMMUNICATIONS
(2016)
Article
Multidisciplinary Sciences
Francisca Guzman-Lastra, Andreas Kaiser, Hartmut Loewen
NATURE COMMUNICATIONS
(2016)
Article
Physics, Fluids & Plasmas
Tobias Glanz, Raphael Wittkowski, Hartmut Loewen
Article
Physics, Fluids & Plasmas
John Toner, Hartmut Loewen, Henricus H. Wensink
Article
Physics, Fluids & Plasmas
Niklas Kuechler, Hartmut Loewen, Andreas M. Menzel
