Results 61 to 70 of about 4,890 (259)
Life‐Like Ferrous Oxide Microspheres from Kombucha
Advanced Materials Interfaces, EarlyView.Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis +2 more
wiley +1 more source
Kerr-Schild double copy for Kundt spacetimes of any dimension
Journal of High Energy PhysicsWe show that vacuum type N Kundt spacetimes in an arbitrary dimension admit a Kerr-Schild (KS) double copy. This is mostly done in a coordinate-independent way using the higher-dimensional Newman-Penrose formalism.
Marcello Ortaggio +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
Angled Nozzle Aerosol Jet Printing to Streamline Conformal Patterning of Electronics
Advanced Materials Technologies, EarlyView.A modular, angled aerosol jet printhead is demonstrated to streamline patterning on nonplanar surfaces, including 90° step edges and confined internal geometries. A detailed analysis of gravitational settling for a sheathed aerosol flow and deconvolution of oblique deposition and gravitational effects supports the versatility of this approach for ...
Louis O. Morgan +4 more
wiley +1 more source
A unified theory of gravity and electromagnetism: Classical and quantum aspects [PDF]
Pramana, 2019 A unified classical theory of gravity and electromagnetism with a torsion vector $$\Gamma _i \ne 0$$ , proposed by S N Bose in 1952, is introduced.
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
openaire +4 more sources
Low‐Outgassing Liquid Metal–Silicone Composites for Multifunctional Space Applications
Advanced Materials Technologies, EarlyView.Integrating liquid metal microdroplets into a space‐grade silicone creates a multifunctional composite while preserving its inherent flexibility and low‐outgassing behavior. The composite has 11×$\times$ higher thermal conductivity while remaining thermally stable and maintaining a total mass loss of ≤$\le$ 1% under thermal vacuum testing.
Spencer Pak +5 more
wiley +1 more source
Self-dual pp-wave solutions in chiral higher-spin gravity
Journal of High Energy PhysicsWe show that chiral higher-spin gravity with a vanishing cosmological constant admits a class of exact self-dual pp-wave solutions derived from harmonic scalar functions and two principal spinors.
Tung Tran
doaj +1 more source
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source
Toward Mechanical Intelligence in Robotics
Advanced Robotics Research, EarlyView.Robots can use their physical bodies to perform functions usually assigned to electronic sensors and controllers. This perspective defines mechanical intelligence through three core operations: filtering inputs, routing mechanical signals, and switching between states.
Xinyi Yang +5 more
wiley +1 more source