Results 91 to 100 of about 284,905 (340)

An Embodied Paper‐Based Microfluidic Al‐Air Battery for Enduring Untethered Insect‐Scale Robots

open access: yesAdvanced Science, EarlyView.
This work presents a centimeter‐scale microfluidic aluminum–air battery (MFAAB) with dual‐surface anode and F−‐mediated byproduct decomposition. The design enables a high capacity of 2697.05 mAh/g Al and delivers tens of milliwatts to power LEDs, motors, and a toy car.
Yun Yang   +5 more
wiley   +1 more source

Collapse of Rotating Very Massive Stellar Cores Leading to a Black Hole and a Massive Disk as a Source of Gravitational Waves

open access: yesThe Astrophysical Journal
We derive models of rotating very massive stellar cores with mass ≈10 ^2 –10 ^4 M _⊙ that are marginally stable to the pair-unstable collapse, assuming that the core is isentropic and composed primarily of oxygen.
Masaru Shibata, Sho Fujibayashi
doaj   +1 more source

Unidirectional Evaporation‐Induced Tunable and Continuous Gradient Composite Structure for Absorption‐Dominant Electromagnetic Interference Shielding

open access: yesAdvanced Science, EarlyView.
A continuous conductivity gradient is formed in a porous MXene/melamine foam via directional evaporation, thereby improving impedance matching and enhancing electromagnetic attenuation. The resulting monolithic composite delivers absorption‐dominant EMI shielding with ultralow reflection, offering a simple route toward lightweight EMI shielding ...
Dawei Zhang   +6 more
wiley   +1 more source

Testing the Nature of GW200105 by Probing the Frequency Evolution of Eccentricity

open access: yesThe Astrophysical Journal
GW200105 is a compact binary coalescence event, consisting of a neutron star and a black hole, observed in LIGO–Virgo–KAGRA’s third observing run.
Avinash Tiwari   +3 more
doaj   +1 more source

The Enhanced Population of Extreme Mass-ratio Inspirals in the LISA Band from Supermassive Black Hole Binaries

open access: yesThe Astrophysical Journal Letters, 2023
Extreme mass-ratio inspirals (EMRIs) take place when a stellar-mass black hole (BH) merges with a supermassive BH (SMBH). The gravitational-wave emission from such an event is expected to be detectable by the future Laser Interferometer Space Antenna ...
Smadar Naoz, Zoltán Haiman
doaj   +1 more source

Wearable‐Derived Diurnal Alignment Between Physical Activity and Device Temperature Predicts Future Disease and Mortality Risk

open access: yesAdvanced Science, EarlyView.
Wearable‐derived diurnal alignment between physical activity and device temperature, decomposed into 24 h coupling strength (M24), phase deviation (D24), and 12 h harmonic magnitude (M12), is examined in approximately 90,000 UK Biobank participants.
Han Chen   +6 more
wiley   +1 more source

Evolution of Physical Intelligence Across Scales

open access: yesAdvanced Intelligent Discovery, EarlyView.
By following the evolution of physical intelligence across scales, this article shows how intelligence arises from materials, structures, physical interactions, and collectives. It establishes physical intelligence as the evolutionary foundation upon which embodied intelligence is built.
Ke Liu   +7 more
wiley   +1 more source

Machine Learning for the Characterization of Gravitational Wave Data

open access: yes, 2022
The low-latency characterization of detector noise is a crucial step in the detection of gravitational waves. In particular, a rapid classification and identification of transient noise sources, usually referred to as glitches, is very important when ...
Iess A, Morawski F, Cuoco E, Razzano M
core  

Localizing Dynamically Formed Black Hole Binaries in Milky Way Globular Clusters with LISA

open access: yesThe Astrophysical Journal Letters
The dynamical formation of binary black holes (BBHs) in globular clusters (GCs) may contribute significantly to the observed gravitational-wave (GW) merger rate.
Zeyuan Xuan, Kyle Kremer, Smadar Naoz
doaj   +1 more source

Resonant Relaxation near a Massive Black Hole: The Stellar Distribution and Gravitational Wave Sources [PDF]

open access: yes, 2006
Resonant relaxation (RR) of orbital angular momenta occurs near massive black holes (MBHs) where the potential is spherical and stellar orbits are nearly Keplerian and so do not precess significantly. The resulting coherent torques efficiently change the
Clovis Hopman, T. Alexander
semanticscholar   +1 more source

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