Results 61 to 70 of about 237,261 (271)

Synthesis and Electronic Structure of the Fractionally Occupied Double Perovskite EuTa2O6 with Ordered Europium Vacancies

open access: yesAdvanced Functional Materials, EarlyView.
Two‐dimensional electronic states are the foundation of modern semiconductor technology. Here, we report molecular‐beam epitaxy growth of fractional double perovskite, EuTa2O6. Reciprocal space mapping and transmission electron microscopy confirm a layered ordering of A‐site cations.
Tobias Schwaigert   +15 more
wiley   +1 more source

A Review of the Characteristics of Light Pollution: Assessment Technique, Policy, and Legislation

open access: yesEnergies
Light pollution from the use of artificial lighting poses significant impacts on human health, traffic safety, ecological environment, astronomy, and energy use.
Ying Hao   +4 more
doaj   +1 more source

Chemical Homogeneity of Wide Binary Systems: An Approach from Near-Infrared Spectroscopy

open access: yesThe Astronomical Journal, 2023
Wide binaries, with separations between the two stars from a few au to more than several thousand au, are valuable objects for various research topics in Galactic astronomy.
Dongwook Lim   +4 more
doaj   +1 more source

Intranight optical variability of radio-quiet BL Lacertae objects

open access: yes, 2015
Aims: Intranight variation (or microvariation) is a common phenomenon of radio-loud BL Lac objects. However, it is not clear whether the recently found radio-quiet BL Lac objects have the same properties.
Liu, Yuan, Zhang, Jin, Zhang, Shuang Nan
core   +1 more source

Superfluid vortices in neutron stars [PDF]

open access: yes, 2001
A microscopic, quantum mechanical model for neutron vortices in the crust of a neutron star is presented. After a brief introduction to the Bogoliubov- de Gennes equations, which form the basis for our calculations, we present results for density ...
Anderson   +22 more
core   +2 more sources

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang   +9 more
wiley   +1 more source

A Catalog of Young Stellar Objects from the LAMOST and ZTF Surveys

open access: yesThe Astrophysical Journal Supplement Series, 2023
As astronomical data sets become too large for traditional analysis approaches, more machine-learning algorithms are employed in astronomy. A wealth of light variation data have been accumulated, which provide rich samples for astronomers to study ...
Jingyi Zhang   +4 more
doaj   +1 more source

The column density towards LMC X-1

open access: yes, 2009
We measure the neutral absorption towards the black hole X-ray binary system LMC X-1 from six archival soft X-ray spectra obtained with the gratings and/or CCD detectors on Chandra, XMM-Newton, and Swift.
Barragan, Laura   +4 more
core   +1 more source

Planck pre-launch status: calibration of the Low Frequency Instrument flight model radiometers [PDF]

open access: yes, 2010
The Low Frequency Instrument (LFI) on-board the ESA Planck satellite carries eleven radiometer subsystems, called Radiometer Chain Assemblies (RCAs), each composed of a pair of pseudo-correlation receivers.
Leahy, John   +74 more
core   +3 more sources

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid   +13 more
wiley   +1 more source

Home - About - Disclaimer - Privacy