Results 111 to 120 of about 2,506 (304)

From Behavior to Dynamics: Decoding Carrier Roles in Cu‐based Photocathodes for Solar‐Driven CO2 Reduction

Advanced Materials, EarlyView.
The performance of Cu‐based photocathodes in photoelectrochemical CO2 reduction is not governed by catalytic sites alone, but by the dynamic journey of photogenerated carriers. This review decodes how carrier generation, recombination, transport, accumulation, extraction, and electrolyte coupling shape catalytic activity, selectivity, and stability ...
Yi‐Cheng Wang, Chenyu Xu, Peng‐Fei Sui, Yi Liu, Xiaolei Wang, Jing‐Li Luo   +5 more
wiley   +1 more source

Stellar wind variations during the X-ray high and low states of Cygnus X-1 [PDF]

, 2008
We present results from Hubble Space Telescope ultraviolet spectroscopy of the massive X-ray and black hole binary system, HD 226868 = Cyg X-1. The spectra were obtained at both orbital conjunction phases in 2002 and 2003, when the system was in the X ...
Gies, D.R., McSwain, M.V., Huang, W., Crenshaw, D. M., Caballero-Nieves, S.M., Howell, S.B., Kaper, L., Koubský, P., Blake, R.M., Blake, R. M., Howell, S. B., Hillwig, T.C., Caballero-Nieves, S. M., Hillwig, T. C., Bolton, C.T., Bolton, C. T., McSwain, M. V., Gies, D. R., Crenshaw, D.M., Hadrava, P., Herrero, A.   +20 more
core   +1 more source

Sub‐Diffraction Nanolithography of Halide Perovskite via Reversible All‐Optical Crystallization–Decomposition

Advanced Materials, EarlyView.
A reversible, all‐optical modulation strategy enables resist‐free, sub‐diffraction nanolithography of halide perovskite films. Leveraging 800 nm fs laser‐induced crystallization and 365 nm laser driven decomposition, reconfigurable patterning achieves feature sizes down to 93.5 nm. This chemistry‐free approach offers dynamic control over optoelectronic
Zhengfen Wan, Xiao Huang, Fangyi Zhang, Qiming Zhang, Min Gu   +4 more
wiley   +1 more source

X-ray emission from star-forming galaxies [PDF]

, 2011
In this dissertation we study the properties of high-mass X-ray binaries (HMXBs) and hot inter-stellar medium in star-forming galaxies and their relation with the star formation rate (SFR), based on the data from Chandra, Spitzer, GALEX and 2MASS public ...
Mineo, S., Mineo, Stefano
core  

Sometimes They Come Back: Pulsations in A 0538–66 at 69 ms Rediscovered with NICER

The Astrophysical Journal
We report on Neutron Star Interior Composition Explorer (NICER) X-ray observations of the Be X-ray binary A 0538–66 located in the Large Magellanic Cloud. Fast pulsations (69 ms) in this source were discovered in 1980 during a bright outburst in which it
Lorenzo Ducci, Sandro Mereghetti
doaj   +1 more source

Does High-density or Mass Help Star Clusters Produce X-Ray Binaries in Star-forming Galaxies?

The Astrophysical Journal, 2019
Abstract It is now widely accepted that many X-ray binaries (XRBs) form in compact star clusters. Therefore, it follows that there may be a link between the properties of star clusters and the production of XRBs. We study the masses and densities of compact clusters with different ages found in the merging Antennae galaxies and in the ...
P. Johns Mulia, R. Chandar, B. Rangelov
openaire   +1 more source

An Ion‐Based Strategy Toward Synergistic Surface Functionalization Combining the Osteogenic Properties and NIR‐Mediated Antibacterial Activity of PEEK

Advanced Materials, EarlyView.
A multifunctional bioactive PEEK‐based implant (Mn@p/MBG‐SPEEK) is engineered to combat implant‐associated infections while promoting osteogenesis. The hybrid surface activates PI3K/Akt/mTOR and AP‐1 signaling pathways for osteogenic differentiation, while Mn coordination induces electronic coupling that narrows the HOMO‐LUMO energy gap and enhances ...
Zhiyan Xu, Ondřej Adam, Marek Doubrava, Ana M. Beltrán, Ivo Dlouhý, Xin Liu, Baiyan Sui, Aldo R. Boccaccini   +7 more
wiley   +1 more source

Discovery of a New Spectral Transition in Swift J0243.6+6124 in the Sub-Eddington Regime

The Astrophysical Journal
We have conducted a detailed spectral analysis of Swift J0243.6+6124 in its sub-Eddington regime, as observed by Insight-HXMT and NICER during a series of outbursts including the giant one in 2018, and discovered a new transition at L _t  ∼ 4.5 × 10 ^37 ...
Bo-Yan Chen, Shu Zhang, Qing-Cang Shui, Peng-Ju Wang, Long Ji, Ling-Da Kong, Shuang-Nan Zhang, Hua Feng, Yu-Peng Chen, Ming-Yu Ge, Jing-Qiang Peng, Wen-zhong Li   +11 more
doaj   +1 more source

Design Principles for Fluid Molecular Ferroelectrics

Advanced Materials, EarlyView.
A major challenge for soft condensed matter is predicting whether a fluid molecular material will form ferroelectric phase with nematic or smectic order. Through systematic synthesis, and by analogy to solid molecular ferroelectrics, it is shown that subtle hydrogen–fluorine (H/F) substitution(s) allows for tuneable syn‐parallel pairing motifs ...
Calum J. Gibb, Jordan Hobbs, William C. Ogle, Richard. J. Mandle   +3 more
wiley   +1 more source

Periodicities in the high-mass X-ray binary system RXJ0146.9+6121/LSI+61 235 [PDF]

, 2009
The high-mass X-ray binary RX J0146.9+6121, with optical counterpart LS I+61°235 (V831 Cas), is an intriguing system on the outskirts of the open cluster NGC 663. It contains the slowest Be type X-ray pulsar known with a pulse period of around 1400 s and,
Grzybowski, TA, David J. Lane, Balam, D, Thomas A. Grzybowski, Catalan, LJJ, Huziak, R, Crawford, TR, Kiss, L, Roger D. Pickard, Luciuk, D, Closas, P, Richard Huziak, Kinwah Wu, Pickard, RD, David Balam, László L. Kiss, Timothy R. Crawford, Sarty, GE, Johnston, H, Wu, K, Lane, DJ, Gordon E. Sarty, Helen Johnston, Diane Luciuk, Pere Closas, Lionel J. J. Catalan   +25 more
core   +1 more source