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Dual Mechanism for Transient Capacitance Anomaly in Improper Ferroelectrics.
Phys Rev Lett
December 2024
Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
Negative capacitance (NC) effects in ferroelectrics can potentially break fundamental limits of power dissipation known as "Boltzmann tyranny." However, the origin of transient NC of ferroelectrics, which is attributed to two different mechanisms involving free-energy landscape and nucleation, is under intense debate. Here, we report the coexistence of transient NC and an S-shaped anomaly during the switching of ferroelectric hexagonal ferrites capacitor in an RC circuit.
View Article and Find Full Text PDFNonreciprocal Alignment Induces Asymmetric Clustering in Active Mixtures.
Phys Rev Lett
December 2024
Institut für Theoretische Physik, Hardenbergstraße 36, Technische Universität Berlin, D-10623 Berlin, Germany.
Heterogeneity is ubiquitous in biological and synthetic active matter systems that are inherently out of equilibrium. Typically, such active mixtures involve not only conservative interactions between the constituents but also nonreciprocal couplings, whose full consequences for the collective behavior still remain elusive. Here, we study a minimal active nonreciprocal mixture with both symmetric isotropic and nonreciprocal polar interactions.
View Article and Find Full Text PDFNosé-Hoover Integrators at-a-Glance: Barostat Integration Has a Demonstrable Effect on Uniaxial Tension Results of Solid Materials.
J Chem Theory Comput
January 2025
Mechanical and Industrial Engineering Department, Northeastern University, Boston, Massachusetts 02115, United States.
Molecular dynamics is a popular method for evaluating the tensile stress behaviors of many nanomaterials; however, few manuscripts include their thermostat and barostat damping parameters along with their methods. Here, we illustrate the demonstrable effect that barostat integration has on system dynamics during uniaxial testing under a Nosé-Hoover scheme. Three systems are tested: a 2D graphene sheet, a 3D continuous aluminum volume, and a 3D discontinuous polyvinyl alcohol volume.
View Article and Find Full Text PDFNoether and partial Noether approach for the nonlinear (3+1)-dimensional elastic wave equations.
PLoS One
January 2025
Facultad de Ciencias Naturales e Ingenieria, Universidad de Bogota Jorge Tadeo Lozano, Bogota, Colombia.
The Lie group method is a powerful technique for obtaining analytical solutions for various nonlinear differential equations. This study aimed to explore the behavior of nonlinear elastic wave equations and their underlying physical properties using Lie group invariants. We derived eight-dimensional symmetry algebra for the (3+1)-dimensional nonlinear elastic wave equation, which was used to obtain the optimal system.
View Article and Find Full Text PDFFactors affecting behaviors during complementary feeding in infants and children aged 6-24 months.
PLoS One
January 2025
Vitamince Nutrition Counseling, Maltepe/Istanbul, Turkey.
The process that begins around the 6th month of life and continues until the 24th month is called the complementary feeding period. During this period, infants and children start receiving foods that complement breast milk or formula for the first time. The psychosocial factors the infants and children encounter during this period may affect their growth and health in later life.
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