Results 51 to 60 of about 228,090 (281)

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Photometric Study of Contact Binary AW UMa [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1995
BVRI observations of AW UMa were made from March to April during 13 nights in 1994 using the 35cm schmidt-Cassegrain telescope of Department of Astronomy and Space Science, Chungbuk National University.
Jo Ryeong Yim, Jang Hae Jeong
doaj  

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

Circular Polarization in Pulsar Integrated Profiles: Updates

open access: yes, 2006
We update the systematic studies of circular polarization in integrated pulse profiles by Han et al (1998). Data of circular polarization profiles are compiled.
Biggs J D   +30 more
core   +1 more source

An estimate of the time variation of the O/H radial gradient from planetary nebulae [PDF]

open access: yes, 2002
Radial abundance gradients are a common feature of spiral galaxies, and in the case of the Galaxy both the magnitude of the gradients and their variations are among the most important constraints of chemical evolution models.
Alibés   +47 more
core   +2 more sources

Discovery of an Intrinsic Antiferromagnetic Semiconductor EuSc2Te4 With Magnetism‐Driven Nonlinear Transport

open access: yesAdvanced Functional Materials, EarlyView.
EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee   +15 more
wiley   +1 more source

Stability of the mixed phase in hybrid stars

open access: yes, 2004
The transition from hadronic matter to quark matter in the core of neutron stars is likely to be associated with the appearance of a mixed phase, leading to a smooth variation of the star density profile.
Akmal   +30 more
core   +1 more source

Self‐Poled Halide Perovskite Ruddlesden‐Popper Ferroelectric‐Photovoltaic Semiconductor Thin Films and Their Energy Harvesting Properties

open access: yesAdvanced Functional Materials, EarlyView.
Low‐dimensional halide perovskite thin films, (BA)2(MA)n‐1PbnBr3n+1 (n = 1, 2), exhibit both semiconducting and ferroelectric properties, enabling mechanical and light energy harvesting. Using Cr/Cr₂O₃ or PCBM as barrier layers ensures reproducible ferroelectricity.
Raja Sekhar Muddam   +8 more
wiley   +1 more source

The Colour of the Night Sky

open access: yesJournal of Imaging, 2020
The measurement of night sky quality has become an important task in night sky conservation. Modern measurement techniques involve mainly a calibrated digital camera or a spectroradiometer.
Zoltán Kolláth   +3 more
doaj   +1 more source

Visible-IR Colors and Lightcurve Analysis of Two Bright TNOs: 1999 TC36 and 1998 SN165

open access: yes, 2002
We report on observations of two bright Trans-Neptunian Objects (TNOs) - 1999 TC36 and 1998 SN165}- during two observational campaigns, as part of the Meudon Multicolor Survey of Outer Solar System Objects. V-J color was measured for 1999 TC36 (V-J=2.34+/
Doressoundiram, A.   +2 more
core   +2 more sources

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