Results 71 to 80 of about 22,331 (301)
AI–Guided 4D Printing of Carnivorous Plants–Inspired Microneedles for Accelerated Wound Healing
Advanced Materials, EarlyView.This work presents an artificial intelligence (AI)‐guided 4D‐printed microneedle platform inspired by carnivorous plants for wound healing. A thermo‐responsive shape memory polymer enables body temperature–triggered self‐coiling for autonomous wound closure.
Hyun Lee +21 more
wiley +1 more source
Some aspects of reconstruction using a scalar field in f(T) gravity
European Physical Journal C: Particles and Fields, 2017 General relativity characterizes gravity as a geometric property exhibited on spacetime by massive objects, while teleparallel gravity achieves the same results at the level of equations, by taking a torsional perspective of gravity.
Soumya Chakrabarti +2 more
doaj +1 more source
Extended Theories of Electrodynamics in $f(R)$ Gravity
12 Pages; Accepted for publication in Annals of ...
Bajardi, Francesco +3 more
openaire +3 more sources
Cosmography of the f(R,T) gravity theory
, 2021 Currently, in order to explain the accelerated expansion phase of the universe, several alternative approaches have been proposed, among which the most common are dark energy models and alternative theories of gravity. Although these approaches rest on very different physical aspects, it has been shown that both are in agreement with the data in the ...
Farias, I. S., Moraes, P. H. R. S.
openaire +2 more sources
Junction Conditions in f(R) Theories of Gravity [PDF]
Progress of Theoretical Physics, 2008 18 ...
Deruelle, N., Sasaki, M., Sendouda, Y.
openaire +4 more sources
Geometrical approach to strong gravitational lensing in f(R) gravity
, 2011 We present a framework for the study of lensing in spherically symmetric spacetimes within the context of f(R) gravity. Equations for the propagation of null geodesics, together with an expression for the bending angle, are derived for any f(R) theory ...
Goswami R. +3 more
core +1 more source
Advanced Materials, EarlyView.We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park +11 more
wiley +1 more source
Local gravity constraints and power law f(R) theories [PDF]
Gravitation and Cosmology, 2010 There is a conformal equivalence between power law $f(R)$ theories and scalar field theories in which the scalar degree of freedom evolves under the action of an exponential potential function. In the scalar field representation there is a strong coupling of the scalar field with the matter sector due to the conformal transformation.
openaire +2 more sources
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
Wormholes in exponential f(R, T) gravity
European Physical Journal C: Particles and Fields, 2019 Alternative gravity is nowadays an extremely important tool to address some persistent observational issues, such as the dark sector of the universe. They can also be applied to stellar astrophysics, leading to outcomes one step ahead of those obtained ...
P. H. R. S. Moraes, P. K. Sahoo
doaj +1 more source