Results 51 to 60 of about 4,678 (262)
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
An étude on global vacuum energy sequester
Journal of High Energy Physics, 2017 Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections.
Guido D’Amico +5 more
doaj +1 more source
Classical and quantum cosmology in f(T)-gravity theory: A Noether symmetry approach
International Journal of Geometric Methods in Modern Physics, 2021 In the framework of [Formula: see text]-gravity theory, classical and quantum cosmology has been studied in this work for Friedmann Lemaitre Robertson Walker Metric (FLRW) space-time model. The Noether symmetry, a point-like symmetry of the Lagrangian, is used to the physical system and a specific functional form of [Formula: see text] is determined ...
Roshni Bhaumik +2 more
openaire +2 more sources
Advanced Materials, EarlyView.Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim +5 more
wiley +1 more source
Advanced Materials, EarlyView.Magnetic particles are organized into layered architectures by combining shear flow and magnetic fields, with the resulting structures governed by appropriate Mason numbers. The programmed assemblies provide spatial guidance for cell placement, linking field‐controlled self‐assembly, flow‐induced structuring and biological organization.
Guillermo Camacho +5 more
wiley +1 more source
Scattering angle at 3PM in scalar-tensor theories using the PM-EFT formalism
Journal of High Energy PhysicsIn this work, we derive the conservative dynamics of non-spinning binaries in the massless scalar-tensor theories using the post-Minkowskian Effective Field Theory (EFT) approach.
Laura Bernard +2 more
doaj +1 more source
Small free field inflation in higher curvature gravity
Journal of High Energy Physics, 2021 Within General Relativity, a minimally coupled scalar field governed by a quadratic potential is able to produce an accelerated expansion of the universe provided its value and excursion are larger than the Planck scale.
José D. Edelstein +3 more
doaj +1 more source
Gravity waves in classical string theory
Nuclear Physics B, 1992 Abstract Gravity waves that serve as conformally invariant bavkgrounds for the string sigma model can create space-time singularities when they collide. We describe some of the properties and pathologies of these waves, and compute the O(α′) perturbation to the metric for the space-time with two colliding plane waves.
openaire +1 more source
A2: Mathematical relativity and other progress in classical gravity theory—a session report [PDF]
General Relativity and Gravitation, 2014 13 pages, some minor ...
Chrusciel, Piotr T., Paetz, Tim-Torben
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Advanced Materials Interfaces, EarlyView.Reversible light‐induced gradients at solid–liquid interfaces enable controllable interfacial transport via light‐driven diffusioosmosis. We demonstrate directed particle manipulation based on dynamically generated concentration gradients. The mechanism is broadly applicable to cationic, anionic, and non‐ionic surfactants with varying hydrophobicity ...
Maren Umlandt +3 more
wiley +1 more source