Results 61 to 70 of about 4,727,160 (263)
Angewandte Chemie, EarlyView.A helical polymer whose chain ends are connected through pillar[5]arene‐based host–guest interactions translates molecular helicity into supramolecular morphology. Solvent‐triggered helicity inversion accompanied by changes in chain rigidity switches the supramolecular architecture between cyclic and rigid‐rod nanostructures.
Tatsuya Nishimura +4 more
wiley +2 more sources
Distinct Acceleration Relations of Galaxies and Galaxy Clusters from Hyperconical Modified Gravity
The Astrophysical JournalGeneral relativity (GR) is the most successful theory of gravity, with great observational support on local scales. However, to keep GR valid over cosmic scales, some phenomena require the assumption of exotic dark matter, especially the cosmic expansion
Robert Monjo, Indranil Banik
doaj +1 more source
Gravity from transactions: fulfilling the entropic gravity program
Journal of Physics Communications, 2023 This is a comprehensive review of new developments in entropic gravity in light of the Relativistic Transactional Interpretation (RTI). A transactional approach to spacetime events can give rise in a natural way to entropic gravity (in the way originally
A Schlatter, R E Kastner
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Advanced Materials, EarlyView.A soap‐film inspired strategy enables the fabrication of ultrathin yet robust GelMA‐PAAm membranes for breathing lung culture. The hydrogel membrane supports long‐term cyclic deformation under air‐liquid interface conditions, enabling physiologically relevant breathing motions of engineered lung tissue culture. ABSTRACT Breathing continuously stretches
Yunji Lee +9 more
wiley +1 more source
Newtonian Fractional-Dimension Gravity and the Mass-Dimension Field Equation
UniverseWe resume our analysis of Newtonian Fractional-Dimension Gravity (NFDG), an alternative gravitational model that does not require the dark matter (DM) paradigm.
Gabriele U. Varieschi
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Entropy, 2014 A numerical experiment of ideal stochastic motion of a particle subject to conservative forces and Gaussian noise reveals that the path probability depends exponentially on action.
Qiuping A. Wang, Aziz El Kaabouchiu
doaj +1 more source
Advanced Robotics Research, EarlyView.This review highlights recent advances in material extrusion 3D printing of self‐healing polymers, focusing on the interplay between material chemistry, rheology, hardware customization, and process optimization. Filament‐ and ink‐based extrusion strategies, multimaterial architectures, and postprocessing approaches are discussed for applications in ...
Antonio Pavone +2 more
wiley +1 more source
Modified Newtonian dynamics and hadronic scales [PDF]
Modern Physics Letters A, 2021 In this paper, we use the idea of modified Newtonian dynamics to further support the arguments that important information concerning the nature of space is hidden at hadronic mass and distance scales.
openaire +2 more sources
Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic
Advanced Robotics Research, EarlyView.Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang +5 more
wiley +1 more source
The Formation of Cosmic Structure with Modified Newtonian Dynamics [PDF]
The Astrophysical Journal, 2001 I consider the growth of inhomogeneities in a low-density baryonic, vacuum energy-dominated universe in the context of modified Newtonian dynamics (MOND). I first write down a two-field Langrangian-based theory of MOND (non-relativistic), which embodies several assumptions such as constancy of the MOND acceleration parameter, association of a MOND ...
openaire +3 more sources