Article
Physics, Fluids & Plasmas
Andrew J. Archer, Tomonari Dotera, Alastair M. Rucklidge
Summary: This study investigates a class of aperiodic tilings with hexagonal symmetry based on rectangles and two types of equilateral triangles. By designing the pair potentials, aperiodic stable states of rectangle-triangle tilings with two different examples are formed.
Article
Multidisciplinary Sciences
Yuchu Liu, Tong Liu, Xiao-Yun Yan, Qing-Yun Guo, Huanyu Lei, Zongwu Huang, Rui Zhang, Yu Wang, Jing Wang, Feng Liu, Feng-Gang Bian, E. W. Meijer, Takuzo Aida, Mingjun Huang, Stephen Z. D. Cheng
Summary: Quasiperiodic structures in metal alloys have been found to be related to the icosahedral order in the melt. Among various phases observed in intermetallics, decagonal quasicrystal (DQC) structures have been identified in many glass-forming alloys but are still inaccessible in bulk-state condensed soft matters. By annealing a mixture of two giant molecules, a binary system can assemble into an axial DQC superlattice, which is comprehensively identified with meso-atomic accuracy. Analysis shows that the DQC superlattice is composed of mesoatoms with an unusually broad volume distribution. The interplays of submesoatomic (molecular) and mesoatomic (supramolecular) local packings are found to play a crucial role in the formation of the metastable DQC superlattice and its transition to dodecagonal quasicrystal and Frank-Kasper sigma superlattices.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Physics, Multidisciplinary
Tyler Gorda, Aleksi Kurkela, Risto Paatelainen, Saga Sappi, Aleksi Vuorinen
Summary: This letter discusses the weak-coupling expansion of the dense QCD equation of state and computes the contribution arising from non-Abelian interactions among long-wavelength, dynamically screened gluonic fields. The findings show that the soft sector behaves well within cold quark matter and that the new contribution decreases the renormalization-scale dependence of the equation of state at high density.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Leonid A. Chernozatonskii, Victor A. Demin, Alexander G. Kvashnin, Dmitry G. Kvashnin
Summary: In this study, a novel two-dimensional carbon quasicrystal structure named diamane quasicrystal is proposed, showing unique atomic features and superior mechanical properties compared to the conventional AB-stacked diamanes. Through DFT and MD methods, it is found that diamane quasicrystals have promising application prospects, opening up a new pathway for synthesizing inorganic quasicrystals with special physical and chemical properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Gaetano Assanto, Timothy R. Marchant, Noel F. Smyth
Summary: This paper reviews the interaction of optical solitary waves, such as nematicons and vortices, in nematic liquid crystals with other nematicons and localised structures, such as refractive index changes, and discusses their importance for all-optical guided wave signal manipulation.
APPLIED SCIENCES-BASEL
(2022)
Article
Physics, Multidisciplinary
L. N. Carenza, G. Gonnella, D. Marenduzzo, G. Negro, E. Orlandini
Summary: This study investigates the phase behavior of quasi-two-dimensional cholesteric liquid crystal shells and discovers novel topological phases that differ from those observed on flat geometries. For spherical shells, finite quasicrystals and amorphous structures are identified, which are made up of mixtures of polygonal tessellations of half-skynnions. For toroidal shells, variations in local curvature lead to the stabilization of heterogeneous phases where cholesteric patterns coexist with hexagonal lattices of half-skyrmions. These findings provide important insights for experimental self-assembling of cholesteric shells.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Yuki Nagai
Summary: A numerical study reveals the presence of vortex pinning in a superconducting quasicrystal without impurities and defects, attributed to the lack of translational symmetry leading to intrinsic inhomogeneity in the superconducting order parameter. Experimental detection of atomic-scale inhomogeneous superconducting order parameter in quasicrystals influenced by vortex pinning effects is proposed.
Review
Materials Science, Multidisciplinary
Rafal Kowerdziej, Antonio Ferraro, Dimitrios C. Zografopoulos, Roberto Caputo
Summary: This article reviews recent progress in active metamaterials, focusing on hybrid composites that combine plasmonic and dielectric materials with soft matter assemblies. Theoretical background, experimental realizations, and state-of-the-art applications in light-matter interactions are discussed, and current challenges in the field are addressed.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Ashish Jayaraman, Carlos M. Baez-Cotto, Tyler J. Mann, Mahesh K. Mahanthappa
Summary: The addition of water to a mixture of an ionic surfactant and n-decane was found to induce the formation of aqueous lyotropic dodecagonal quasicrystals, which exhibit local 12-fold rotational symmetry and no long-range translational order. The formation of these quasicrystals is sensitive to the mixing order of molecular constituents and sample thermal history, with different conditions leading to the formation of only periodic structures. These findings suggest that molecular complexity is not always required for the formation of aperiodic supramolecular order.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Multidisciplinary
Chang Liu, Erina Fujita, Yukari Katsura, Yuki Inada, Asuka Ishikawa, Ryuji Tamura, Kaoru Kimura, Ryo Yoshida
Summary: Quasicrystals, a third class of solid-state materials, exhibit rotational symmetries and long-range order without periodicity, with over one hundred stable quasicrystals reported to date. The discovery of new quasicrystals has slowed down in recent years, but machine learning has been shown to accelerate this process.
ADVANCED MATERIALS
(2021)
Article
Astronomy & Astrophysics
Tyler Gorda, Aleksi Kurkela, Risto Paatelainen, Saga Sappi, Aleksi Vuorinen
Summary: This article provides a detailed overview of the soft contribution required for next-to-next-to-next-to-leading order pressure calculations in high-density, zero-temperature quark matter (QM), involving the determination of the pressure of the hard-thermal-loop effective theory to full two-loop order at zero temperature and an in-depth discussion of the weak-coupling expansion structure of QM pressure.
Article
Chemistry, Physical
Huaizhe Yu, Kunlun Wang, Tibor Szilvasi, Karthik Nayani, Nanqi Bao, Robert J. Twieg, Manos Mavrikakis, Nicholas L. Abbott
Summary: Soft matter with programmed macroscopic responses to molecular analytes, such as the nematic liquid crystal composition described in this study, shows potential utility in health and safety contexts. The composition undergoes a distinct phase transition in response to organoamine vapors, with the formation of long-lasting metastable nematic phases. By utilizing experimental and computational methods, it was concluded that a one-to-one heterodimer is the dominant species in this LC composition, offering a chemically selective way to report the presence of volatile amines.
Article
Materials Science, Multidisciplinary
Bruno R. de Abreu, Fabio Cinti, Tommaso Macri
Summary: This paper investigates the search for spontaneous pattern formation in equilibrium phases with genuine quantum properties. The effect of quantum fluctuations and exchange interactions on the phases of an ensemble of bosonic particles is studied. Extensive simulations reveal a rich phase diagram with supersolid stripes, kagome, and triangular crystals in the low-density regime, as well as patterns with 12-fold rotational symmetry in the high-density limit. The quantum phases are characterized by computing the superfluid density and the bond-orientational order parameter. Differences between the findings of this study and classical equilibrium phases for the same parameter regimes are highlighted.
Article
Chemistry, Physical
A. Gallo-Bueno, M. Kohout, E. Francisco, A. Martin Pendas
Summary: The localization and delocalization of electrons in molecular and condensed phases have been extensively studied. In Chemistry, various localization descriptors exist to measure the fluctuation of electron population in meaningful regions of physical space. These measurements have been linked to the conductive or insulating properties of extended systems. In molecules, the complete electron population probability distribution function has provided significant insights and revealed exotic interaction regimes in excited states. The recent observation of electron distribution functions in periodic systems has shown similar trends, with narrow distributions in ionic compounds and widening distributions with increasing covalency. Contrary to conventional wisdom, most electrons delocalize over their nearest neighbors, even in quasi electron-gas metals like sodium. The conductive or insulating nature of materials can be distinguished through the decay rate of the probability distribution.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
News Item
Physics, Multidisciplinary
Nick Oikonomeas-Koppasis, Peter Schall
Summary: A proposed van der Waals-like model provides a unified framework for describing the dynamic solid-liquid transition in mechanically probed soft materials, addressing the current lack of understanding in this area.
Article
Mechanics
Cedric Beaume, Alastair M. Rucklidge, Joanna Tumelty
Summary: In this study, we determined the nature of the primary bifurcation in doubly diffusive convection and found that large-amplitude steady convection states can coexist with the stable conduction state. We also identified attracting travelling waves and periodic orbits when the convection states are unstable.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Mechanics
Xiang Li, Mauro Mobilia, Alastair M. Rucklidge, R. K. P. Zia
Summary: In this study, we investigate the long-time properties of a dynamic, out-of-equilibrium network formed by individuals in a population consisting of two communities of different sizes. The study shows that when the network is subject to enough heterophily, individuals' mean degree greatly exceeds their preferred degree.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Mathematics, Applied
D. J. Ratliff
Summary: The study of hyperbolic waves involves various notions, and this paper demonstrates for the first time that the loss of genuine nonlinearity leads to the appearance of the modified Korteweg-de Vries equation governing the evolution of waves. By applying linear properties such as conservation laws and linear dispersion relation, insights into wave evolution are provided in two physical systems.
Article
Mathematics, Applied
R. Carretero-Gonzalez, L. A. Cisneros-Ake, R. Decker, G. N. Koutsokostas, D. J. Frantzeskakis, P. G. Kevrekidis, D. J. Ratliff
Summary: The main objective of this work is to study quasi-one-dimensional kink-antikink stripes embedded in the two-dimensional sine-Gordon equation. By using variational techniques, we simplify the interaction dynamics between a kink and an antikink stripe, resulting in a reduced system of coupled equations that accurately describe the width and undulation dynamics. Additionally, we discuss the computational identification of the kink center and its numerical implications, as well as alternative approaches to the transverse direction induced dynamics for a single kink stripe in the two-dimensional realm.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2022)
Article
Chemistry, Multidisciplinary
James D. Tinkler, Alberto Scacchi, Maialen Argaiz, Radmila Tomovska, Andrew J. Archer, Helen Willcock, Ignacio Martin-Fabiani
Summary: This study investigates the effects of particle interactions on the size segregation and assembly of colloidal mixtures during drying. By adding a cationic surfactant to a binary latex/silica colloidal dispersion, the researchers observed a reduction in stratification and even suppression of the effect. Higher surfactant concentrations resulted in the formation of armored particles consisting of latex particles coated with smaller silica nanoparticles.
Article
Environmental Sciences
D. Praveen Kumar, D. Ramesh, V. Karuppasamy Vikraman, P. Subramanian
Summary: Adsorption is a promising technology in the gas separation and purification process, with activated carbon and zeolites being the most commonly used adsorbents. Research on synthesizing low-cost and effective adsorbents has gained attention, with Carbon Molecular Sieves (CMSs) considered as an attractive alternative.
ENVIRONMENTAL RESEARCH
(2022)
Article
Physics, Multidisciplinary
Jack Paget, Una Alberti, Marco G. Mazza, Andrew J. Archer, Tyler N. Shendruk
Summary: In this study, a phenomenological Landau theory based on a complex-tensor order parameter is developed to describe the features of lamellar liquid crystals. This theory considers the local degree of lamellar ordering, layer displacement, and orientation of the layers, and resolves some issues in previous models.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Chemistry, Multidisciplinary
N. S. Howard, A. J. Archer, D. N. Sibley, D. J. Southee, K. G. U. Wijayantha
Summary: This study demonstrates that the coffee ring effect during colloidal droplet evaporation can be mitigated by adding a specific concentration of a surfactant. Experiments were conducted on carbon nanotube suspensions with different surfactant concentrations on various substrates. The results showed different pattern types, with a critical surfactant concentration resulting in highly uniform deposits with coffee ring subfeatures. Image analysis and profilometry allowed for the identification of these subfeatures and the inference of deposit coverage.
Article
Chemistry, Physical
S. P. Fitzgerald, A. Bailey Hass, G. Diaz Leines, A. J. Archer
Summary: The time evolution of many systems can be modeled by stochastic transitions between energy minima. The availability of time for transitions is crucial when multiple pathways exist. Traditional reaction rate theory is applicable in the long-time limit, but at short times, the system may choose higher energy barriers with higher probability if the distance in phase space is shorter. Simple models are constructed to illustrate this phenomenon, and the geometric minimum action method algorithm is employed to determine the most likely path at both short and long times.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Multidisciplinary Sciences
Jack Paget, Marco G. Mazza, Andrew J. Archer, Tyler N. Shendruk
Summary: Matter self-assembly into layers generates unique properties. We propose a complex tensor order parameter to describe the local degree of lamellar ordering, layer displacement, and orientation. This theory simplifies numerics and facilitates studies on the mesoscopic structure of topologically complex systems.
NATURE COMMUNICATIONS
(2023)
Article
Mathematics, Applied
J. Tumelty, Cedric Beaume, Alastair M. Rucklidge
Summary: This study investigates the existence of convectons in a vertical slot and reveals that convectons persist even when the primary bifurcation is supercritical. The presence of large-amplitude convection alongside the stable conduction state without bistability is observed. The dynamics become increasingly complex with the increased role of inertia at low Prandtl numbers.
SIAM JOURNAL ON APPLIED DYNAMICAL SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Lluis Hernandez-Navarro, Matthew Asker, Alastair M. Rucklidge, Mauro Mobilia
Summary: This article focuses on studying how microbial populations respond to antimicrobial drugs and finding mechanisms to possibly eradicate antimicrobial-resistant cells. The findings show that in volatile environments, the evolution dynamics of microbial communities can be greatly altered, leading to the extinction of antimicrobial-resistant strains. The study also discusses the potential applications of these findings in laboratory-controlled experiments.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Physics, Fluids & Plasmas
Andrew J. Archer, Tomonari Dotera, Alastair M. Rucklidge
Summary: This study investigates a class of aperiodic tilings with hexagonal symmetry based on rectangles and two types of equilateral triangles. By designing the pair potentials, aperiodic stable states of rectangle-triangle tilings with two different examples are formed.
Article
Physics, Fluids & Plasmas
P. Subramanian, E. Knobloch, P. G. Kevrekidis
Summary: We propose an alternative mechanism for the formation of rogue waves in a nonconservative, nonlinear lattice dynamical system. We find that certain oscillators undergo extremely fast and large amplitude excursions, resembling a rogue wave burst, when connected in a diffusive lattice coupling. The probability distribution of different amplitudes exhibits bimodality, with peaks at both vanishing and very large amplitude.
