Article
Physics, Multidisciplinary
Antoine Tenart, Gaetan Herce, Jan-Philipp Bureik, Alexandre Dareau, David Clement
Summary: Quantum fluctuations play a crucial role in the properties of quantum matter, leading to many-body correlations and entanglement. The observation of atom pairs in interacting Bose gas depletion allows for the characterization of equilibrium many-body states. Interacting systems acquire non-trivial quantum correlations as a result of the interplay between quantum fluctuations and interactions.
Article
Physics, Multidisciplinary
Mahmood A. H. Khaled, Mohamed A. Shukri, Yusra A. A. Hager
Summary: This study investigates the linear and nonlinear dust acoustic (DA) waves in a dusty plasma with opposite polarity dust grains, Maxwellian electrons and ions, including the generalized polarization force effect. The results show that dual dust polarity and polarization force significantly alter the properties of the linear DA waves. Large amplitude DA solitons are discussed using the Sagdeev potential technique, and it is found that both rarefactive and compressive solitons can exist in such a dusty plasma. The study also examines the influence of the polarization force parameter R, the ratio of the charge number of positive dust to negative dust Z, and the Mach number M on the properties of the Sagdeev potential, and the results demonstrate that these parameters play a significant role in determining the region of existence of large amplitude DA solitons.
Article
Physics, Multidisciplinary
Weiyao Ke, Yi Yin
Summary: We investigate the response of the near-equilibrium quark-gluon plasma (QGP) to perturbation at nonhydrodynamic gradients. We propose a conceivable scenario under which sound mode continues to dominate the medium response in this regime. Such a scenario has been observed experimentally for various liquids and liquid metals. We further show that this extended hydrodynamic regime (EHR) indeed exists for both the weakly coupled kinetic equation in the relaxation time approximation (RTA) and the strongly coupled N = 4 supersymmetric Yang-Mills (SYM) theory. We construct a simple but nontrivial extension of Muller-Israel-Stewart (MIS) theory-namely MIS*-and demonstrate that it describes the EHR response for both the RTA and SYM theory. This indicates that MIS* equations can potentially be employed to search for QGP EHR via heavy-ion collisions.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
M. R. Hassan, S. Biswas, K. Habib, S. Sultana
Summary: A four-component magnetized collisional x-nonthermal plasma containing stationary dust grains of opposite charges, inertial ion fluid, and non-inertial x-distributed superthermal electrons has been studied to examine the properties of different modes of dust-ion-acoustic waves (DIAWs). The damped Zakharov-Kuznetsov-Burgers equation is derived using a reductive perturbation method and its solutions are used to analyze the characteristics of dust-ion-acoustic solitary and shock waves. The impact of relevant physical plasma parameters on the dust-ion-acoustic soliton and shock characteristics is examined, as well as the effect of the coexistence of oppositely charged dust grains.
RESULTS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
Lukas Synek, Roman Pleskot, Juraj Sekeres, Natalia Serrano, Nemanja Vukasinovic, Jitka Ortmannova, Martina Klejchova, Premysl Pejchar, Klara Batystova, Malgorzata Gutkowska, Edita Jankova-Drdova, Vedrana Markovic, Tamara Pecenkova, Jiri Santrucek, Viktor Zarsky, Martin Potocky
Summary: The study reveals plant-specific features of the exocyst complex and emphasizes the importance of the specific protein-lipid code for the recruitment of peripheral membrane proteins.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
S. Tarofder, A. Mannan, A. A. Mamun
Summary: A theoretical investigation was conducted to study the propagation of dust-acoustic solitary waves in a dusty plasma system. The study considered dynamic positively and negatively charged warm dust species, as well as nonthermally distributed ion and electron species. The research derived the cylindrical Kadomstev-Petviashvili equation using the reductive perturbation method, which showed the existence of solitary wave solutions. The effects of various parameters on the properties of the solitary waves were investigated, and their relevance to cometary tails, upper mesosphere, and Jupiter's magnetosphere was briefly discussed.
RESULTS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Alexander Mitrofanov, Sergei Urazhdin
Summary: Researchers have simulated scattering of electrons on a chain of antiferromagnetically coupled quantum Heisenberg spins to analyze spin-transfer effects that classical models of magnetism cannot describe. The simulations show efficient excitation of dynamical states that are prohibited by semiclassical symmetries, such as the generation of multiple magnetic excitation quanta by a single electron. Quantum interference of spin wave functions allows for the generation of magnetization dynamics with amplitudes exceeding the transferred magnetic moment, with the excitation efficiency mainly governed by energy transfer rather than electron spin polarization. Nonclassical spin transfer may enable effective electronic control of antiferromagnets without the limitations of classical constraints.
PHYSICAL REVIEW LETTERS
(2021)
Article
Biology
Dan Zhang, Roxane P. Spiegelhalder, Emily B. Abrash, Tiago D. G. Nunes, Ines Hidalgo, M. Ximena Anleu Gil, Barbara Jesenofsky, Heike Lindner, Dominique C. Bergmann, Michael T. Raissig
Summary: In this study, we identified BdPOLAR as a novel factor involved in SC formation through comparative transcriptomics in Brachypodium distachyon. We found that BdPOLAR forms a distal polarity domain in subsidiary mother cells, opposite to the proximal PAN1 domain, and both polarity domains play important roles in coordinating the SC division process.
Article
Materials Science, Multidisciplinary
Feihao Pan, Xunwu Hu, Jiale Huang, Bingxian Shi, Jinchen Wang, Juanjuan Liu, Hongxia Zhang, Daye Xu, Jianfei Qin, Hongliang Wang, Lijie Hao, Kun Cao, Peng Cheng, Dao-Xin Yao
Summary: This study comprehensively investigates the physical properties of Fe2SiSe4, an unexplored member in the olivine chalcogenides with a sawtooth lattice. The results show that Fe2SiSe4 is a magnetic semiconductor with a band gap of 0.66 eV. It exhibits complex magnetic structures and may serve as a new material platform for further research on magnetic devices and the flat-band effect through chemical doping.
Article
Biology
Shihai Jia, Evan M. Ratzan, Ellison J. Goodrich, Raisa Abrar, Luke Heiland, Basile Tarchini, Michael R. Deans
Summary: The vestibular maculae in the inner ear play a crucial role in detecting acceleration and coordinating balance. The transcription factor EMX2 is responsible for establishing the planar polarized organization in hair cells, and we have discovered that it negatively regulates the serine threonine kinase STK32A. STK32A is involved in aligning the polarity of hair cell bundles and reinforcing the formation of LPR.
Article
Physics, Multidisciplinary
Muhammad Khalid
Summary: The nonlinear propagation of ion-acoustic solitary waves in a magnetized electron-ion plasma with pressure anisotropy and Tsallis distribution is investigated. The energy integral equation is derived using the Sagdeev approach. The study reveals that the model supports only positive potential nonlinear structures and examines the effect of relevant plasma parameters on the characteristics of ion-acoustic solitary structures.
Article
Chemistry, Analytical
Ye Cao, Guoshuai Sun, Defu Qian, Jie Ding, Xiaobing Li, Yuhang Chen, Qin Xu, Jing Li, Hongbo Li
Summary: A unique multiplexed photoelectrochemical (PEC) biosensor for simultaneous detection of miRNA-141 and miRNA-155 was developed using Fe3O4 @SiO2 @CdS-HP1-Ag2S NPs and CdTe QDs-HP2-Au NPs nanobioprobes polarity switching mode. The biosensor exhibited a linear range of 50 fM to 10 nM and detection limits of 40.8 fM and 37.5 fM, respectively, without the need for bioamplification technology. It also demonstrated significant advantages in terms of compactness, short signal acquisition time, cost-effectiveness, stability, and replicability, offering a new perspective for simultaneous monitoring of multiple miRNAs.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Plant Sciences
Cecilia Rodriguez-Furlan, Ariana Emami, Jaimie M. Van Norman
Summary: The polarity of plasma membrane proteins plays a crucial role in cell morphogenesis and plant development. In Arabidopsis root endodermal cells, the secretion machinery responsible for the polarized secretion of two transmembrane kinases, IRK and KOIN, was investigated. The researchers found that distinct mechanisms, mediated by specific ADP-ribosylation factor-guanine-nucleotide exchange factors (ARF-GEFs), guide the polarized secretion of these proteins, independent of cell type or polar axis.
Article
Chemistry, Physical
Mikael Scott, Mickael G. G. Delcey
Summary: This article presents novel developments for the efficient evaluation of complex linear response functions of a multiconfigurational self-consistent field (MCSCF) wave function. The direct evaluation of linear response properties using the complex polarization propagator (CPP) approach is implemented within both the Tamm-Dancoff approximation (TDA) and the random phase approximation (RPA). The code's performance is illustrated with numerical examples, demonstrating its capability to handle large-scale MC-CPP calculations as well as the effect of including or excluding core orbitals in X-ray spectroscopy for small covalent metal complexes.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2023)
Article
Materials Science, Multidisciplinary
Amit Jamadagni, Hendrik Weimer
Summary: This study analyzes the phase diagram of a topological insulator model with antiferromagnetic interactions using a topological error correction method. It shows that efficient error correction statistics can be obtained through Monte Carlo sampling of ground state wave function represented by matrix product states, identifying two distinct topological phases as well as a topologically trivial antiferromagnetic phase.
Article
Physics, Multidisciplinary
N. A. Zedan, A. Atteya, W. F. El-Taibany, S. K. EL-Labany
Summary: This paper theoretically investigates the multi-dimensional instability of ion acoustic solitary waves (IASWs) in a magnetized, collisionless, degenerate multi-ion plasma system with trapping distributed electrons in the presence of a quantizing magnetic field. It discusses the dispersion properties of linear IASWs and analyzes the dynamics of the nonlinear Zakharo-Kuznetsov (ZK) equation to study the solitary waves. Additionally, it explores the effects of trapped electrons, electron temperature, and mass-to-charge ratio on the phase velocity.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Physics, Multidisciplinary
A. A. Fayad, W. M. Moslem, S. K. El-Labany
Summary: The propagation properties of weakly nonlinear ion acoustic waves in the Venusian ionosphere were investigated, revealing a supersonic wave phase velocity and an increase in soliton amplitude with higher-order corrections. This is in agreement with observations, providing a suitable description for solitary waves as wave amplitudes grow.
Article
Physics, Multidisciplinary
W. F. El-Taibany, N. A. El-Bedwehy, N. A. El-Shafeay, S. K. El-Labany
Summary: The three-dimensional modulational instability of dust acoustic waves in a three-component magnetized dusty plasma system is investigated, showing that the first and second-order solutions of dust acoustic rogue waves have different features dependent on various physical parameters. Comparisons between different amplitudes and solutions obtained from different electron distributions are made, and implications in specific plasma situations are briefly discussed.
Article
Physics, Multidisciplinary
W. F. El-Taibany, S. K. EL-Labany, A. S. El-Helbawy, A. Atteya
Summary: In this study, investigations on dust-acoustic solitary and periodic waves were conducted in a magnetized self-gravitating dusty plasma. The results obtained from numerical simulations and phase plane theory revealed the dependence of the waves on plasma parameters and their importance in understanding nonlinear structures in experimental devices and astrophysical environments.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Physics, Multidisciplinary
T. H. Khalil, A. El-Depsy, W. F. El-Taibany, M. M. Selim
Summary: This study investigates the nonlinear Langmuir associations in an ultrarelativistic, fully degenerate quantum plasma consisting of stationary ions and warm electrons. A quantum hydrodynamic model is used, along with the equation of state of electrons, to derive a nonlinear differential equation describing the chemical potential of electrons. The Runge-Kutta method is then employed for numerical solution, and the profiles of the chemical potential and electron number density are graphically presented. Numerical results demonstrate the presence of small scale quantum Langmuir oscillations, along with classical oscillations, caused by the Bohm quantum force. These findings contribute to the understanding of nonlinear Langmuir waves in various astrophysical plasmas, such as planetary interiors and compact objects.
Article
Physics, Multidisciplinary
A. Atteya, S. K. EL-Labany, P. K. Karmakar, M. S. Afify
Summary: This study investigates the generation mechanism and characteristics of oblique electron acoustic waves, revealing their dependency on plasma parameters and their potential impact on magnetic reconnection and anomalous resistivity.
Article
Physics, Multidisciplinary
N. A. El-Shafeay, W. M. Moslem, W. F. El-Taibany, S. K. El-Labany
Summary: Based on observations of ionospheric escape from Venus, a test charge approach is proposed to explain the ionic loss caused by solar wind interaction with Venus' upper ionosphere. The model considers two positive planetary ions with isothermal electrons and streaming solar wind protons. The derived results show that properties of the escaping ions are affected by velocity variations within a certain range. The obtained results are in good agreement with observed data.
Article
Physics, Fluids & Plasmas
S. K. El-Labany, W. F. El-Taibany, A. A. El-Tantawy, A. M. Abdelghany
Summary: This study investigates the nonlinear characteristics of Alfve?n waves in a plasma medium composed of double spectral electron distribution and positive and negative ions, deriving a Korteweg-de Vries (KdV-type) equation and exploring periodic and soliton structures. The effects of spectral indices r and q on periodic structures are studied, with findings indicating an increase in amplitude of rarefactive periodic waves with higher r and q values. Additionally, external perturbations are considered, leading to discussions on quasi-periodic and chaotic structures of Alfven waves. It is observed that decreasing the beta value gradually shifts periodic structures to chaotic structures via quasi-periodic ones.
PHYSICS OF PLASMAS
(2022)
Article
Multidisciplinary Sciences
W. F. El-Taibany, P. K. Karmakar, A. A. Beshara, M. A. El-Borie, S. A. Gwaily, A. Atteya
Summary: This study focuses on the solitary waves that emerge from the nonlinear properties of plasmas. A nonlinear homogeneous quantum Zakharov-Kuznetsov equation is derived for a three-component collisionless quantum plasma consisting of electrons, positrons, and ions in the presence of an external static magnetic field. The dependence of the solitary wave structures on various parameters, such as the Bohm potential, magnetic field, obliqueness, species Fermi temperatures, and densities, is investigated. The study also examines the soliton's electric field, energy, and instability growth rate. Comparison of system parameters to the behavior of energy and instability growth rate is performed. The findings contribute to the understanding of dynamics in magnetic white dwarfs, pulsar magnetospheres, semiconductor plasma, and high-intensity laser-solid matter interaction experiments involving e-p-i plasma.
SCIENTIFIC REPORTS
(2022)
Editorial Material
Physics, Fluids & Plasmas
S. K. El-Labany, W. F. El-Taibany, A. A. El-Tantawy, A. M. Abdelghany
PHYSICS OF PLASMAS
(2023)
