Results 51 to 60 of about 49,076 (222)

Fast X-Ray Transients from Magnetar-driven Relativistic Electron–Positron Pair Winds

The Astrophysical Journal
Fast X-ray transients (FXTs) are bright X-ray flashes with durations ranging from minutes to hours, whose physical origins remain uncertain. Observational evidence suggests that at least a subset of FXTs are physically associated with gamma-ray bursts ...
Sen-Lin Pang, Biao Zhang, Zi-Gao Dai
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

Magnetic White Dwarf–M Dwarf Binaries in Pre-mCV Phase as Special Population of Long-period Radio Transients

The Astrophysical Journal
Long-period radio transients (LPTs) are a new class of coherent radio sources with periods ranging from minutes to hours. Recently, two LPT sources, ILT J1101+5521 and GLEAM-X J0704–37, with periods of 2–3 hr have been confirmed to originate from white ...
Yuan-Pei Yang
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

On Fast-radio-burst-associated X-Ray Bursts: Inverse Compton Scattering of Radio Photons by an Extreme Pair Flow During Magnetosphere Activities

The Astrophysical Journal
The Galactic fast radio burst (FRB) FRB 200428 was associated with a short X-ray burst (XRB) from the magnetar SGR J1935+2154 during one of its active phases.
Yue Wu, Yuan-Pei Yang, Fa-Yin Wang, Zi-Gao Dai   +3 more
doaj   +1 more source

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

Advanced Functional Materials, EarlyView.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li, Changshun Dai, He Qi, Jiecheng Liu, Xiaoming Shi, Heng Zhou, Qiong Yang, Mingsheng Long, Lei Shan, Chunchang Wang, Jianli Wang, Zhenxiang Cheng   +11 more
wiley   +1 more source

Constraining the PeV Gamma-Ray Emission Zone of Cygnus X-3 with Contemporaneous GeV Timing and Spectral Observations

The Astrophysical Journal Letters
Cygnus X-3 has recently been established as a variable ultra-high-energy gamma-ray source with photons detected up to 3.7 PeV. Its PeV activity is temporally correlated with Fermi-LAT GeV flares and may also be orbitally modulated, suggesting that the ...
Xing-Fu Zhang, Ruo-Yu Liu, Dmitriy Khangulyan, Cui-Yuan Dai, Xiang-Yu Wang   +4 more
doaj   +1 more source

Numerical Investigation of Thermal Radiation and Viscous Effects on Entropy Generation in Forced Convection Blood Flow over an Axisymmetric Stretching Sheet

Entropy, 2016
Numerical and analytical investigation of the effects of thermal radiation and viscous heating on a convective flow of a non-Newtonian, incompressible fluid in an axisymmetric stretching sheet with constant temperature wall is performed.
Mohammad Yaghoub Abdollahzadeh Jamalabadi, Payam Hooshmand, Ashkan Hesabi, Moon K. Kwak, Isma’il Pirzadeh, Ahmad Jamali Keikha, Mohammadreza Negahdari   +6 more
doaj   +1 more source

Spin Injection Of Exciton–Polaritons With Halide Perovskites At Room Temperature

Advanced Functional Materials, EarlyView.
A monolithic Tamm‐plasmon microcavity embedding a two‐dimensional halide perovskite enables room‐temperature spin injection of exciton‐polaritons under quasi‐resonant optical excitation. Polarization‐resolved spectroscopy reveals partial preservation of the injected spin in the lower polariton branch, while bare excitons remain fully depolarized.
Elena Sendarrubias Arias‐Camisón, Maksim Lednev, Jorge Cuadra, Raúl Gago, Luis Viña, Francisco José García Vidal, Johannes Feist, Ferry Prins, Carlos Antón Solanas   +8 more
wiley   +1 more source

Afterglow Linear Polarization Signatures from Shallow GRB Jets: Implications for Energetic GRBs

The Astrophysical Journal
Gamma-ray bursts (GRBs) are powered by ultrarelativistic jets. The launching sites of these jets are surrounded by dense media, which the jets must cross before they can accelerate and release high-energy emission.
Gal Birenbaum, Ramandeep Gill, Omer Bromberg, Paz Beniamini, Jonathan Granot   +4 more
doaj   +1 more source