Results 71 to 80 of about 143,159 (315)
Action and Entanglement in Gravity and Field Theory [PDF]
Physical Review Letters, 2013 In non-gravitational quantum field theory, the entanglement entropy across a surface depends on the short-distance regularization. Quantum gravity should not require such regularization, and it's been conjectured that the entanglement entropy there is always given by the black hole entropy formula evaluated on the entangling surface. We show that these
openaire +3 more sources
Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction
Advanced Functional Materials, EarlyView.This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia +3 more
wiley +1 more source
Advancements in the gravity field and lithosphere structure of the Moon and Mars
地球与行星物理论评The Moon and Mars are adjacent to Earth and are starting stations for human exploration of the Universe. An in-depth study of the lithospheric structure of the Moon and Mars can reveal the composition and structure of their crust and mantle systems and ...
Shiyu Zhang, Bo Chen, Changyi Xu
doaj +1 more source
Journal of Geodetic Science, 2013 The release of global digital databases for the description of the Earth’s topography and the shape of the Earth’s crust in terms of consistency and geometry initiates a new era in the interpretation and analysis of the observed gravity field of our ...
Tsoulis D.
doaj +1 more source
Quantum Gravity: A Primer for Philosophers. [PDF]
, 2008 ‘Quantum Gravity’ does not denote any existing theory: the field of quantum gravity is very much a ‘work in progress’. As you will see in this chapter, there are multiple lines of attack each with the same core goal: to find a theory that unifies, in ...
Rickles, Dean
core
Reduced Graphene Oxide Transparent Electrodes Enabling Compact Soft Tunable Lenses
Advanced Functional Materials, EarlyView.By spray‐coating an elastomeric membrane with reduced graphene oxide (rGO) at various surface densities, elastomeric actuators are manufactured. Electro‐mechano‐optical characterizations show the suitability of rGO as an effective material for compliant, semi‐transparent electrodes, enabling soft electrically tunable lenses with a compact form factor ...
Giacomo Sasso +4 more
wiley +1 more source
Gauge Gravity and the Unification of Natural Forces [PDF]
, 2001 Physics seems to tell us that there are four fundamental force-fields in nature: the gravitational, the electromagnetic, the weak, and the strong force-field (or interactions).
Liu, Chuang
core
Universal field equations for metric-affine theories of gravity
, 2015 We show that almost all metric-affine theories of gravity yield Einstein field equations with a non-null cosmological constant Lambda. Under certain circumstances and for any dimension, it is also possible to incorporate a Weyl vector field W-mu and ...
Ujevic, M, Tapia, V
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Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]
, 2006 International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066) +14 more
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Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source