Results 181 to 190 of about 4,263,806 (339)

Studying large-scale structure with the 2dF Galaxy Redshift Survey [PDF]

open access: green, 2002
J. A. Peacock   +27 more
openalex   +1 more source

Challenges of II‐VI and III‐V Blue Quantum Dot Light‐Emitting Diodes

open access: yesAdvanced Materials, EarlyView.
Blue‐emitting electroluminescent quantum dot light‐emitting diodes (QD‐LEDs) face critical challenges that limit their practical application, including short operational lifetimes, low color purity, broad spectral linewidths, and unpredictable transient effects like blinking and positive aging.
Shaun Tan   +3 more
wiley   +1 more source

Measuring Galaxy Abundance and Clustering at High Redshift from Incomplete Spectroscopic Data: Tests on Mock Catalogs

open access: yesThe Astrophysical Journal
The number density and correlation function of galaxies are two key quantities to characterize the distribution of the observed galaxy population. High- z spectroscopic surveys, which usually involve complex target selection and are incomplete ...
Jiacheng Meng   +4 more
doaj   +1 more source

A Multi-Colour Survey for High-Redshift Quasars [PDF]

open access: bronze, 1987
S. J. Warren, P. C. Hewett, M. J. Irwin
openalex   +1 more source

Quadruple Helix Inversions of Liquid Crystals Orchestrated by Direct Chirality Transmission of an Intrinsically Chiral Light‐Driven Molecular Machine

open access: yesAdvanced Materials, EarlyView.
A molecular motor with four‐state dynamic chirality is integrated into liquid crystals, enabling quadruple sequential helix inversions and high helical twisting power. Due to high motor efficiency, the supramolecular helicity can be controlled by near‐infrared light via upconversion nanoparticles, resulting in a robust, multistate, photoresponsive soft
Jinyu Sheng   +3 more
wiley   +1 more source

Rainbow Photonic Crystals: Self‐Assembly of Carbohydrate Bottlebrushes Block Copolymers

open access: yesAdvanced Materials, EarlyView.
Full‐color reflective 1D photonic crystals, capable of a tunable, responsive, and reversible color with high repeatability, are created from the self‐assembly of carbohydrate‐based brush block copolymers (BR01‐04). Abstract Tunable and responsive photonic crystal systems are the subject of great research interest owing to their ability to actively ...
Hong Li   +6 more
wiley   +1 more source

Testing General Relativity Using Large-scale Structure Photometric Redshift Surveys and the Cosmic Microwave Background Lensing Effect

open access: yesThe Astrophysical Journal Supplement Series
The E _G statistic provides a valuable tool for evaluating the predictions of general relativity (GR) by probing the relationship between gravitational potential and galaxy clustering on cosmological scales within the observable Universe.
Shang Li, Jun-Qing Xia
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

open access: yesAdvanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella   +3 more
wiley   +1 more source

TiDES: The 4MOST Time Domain Extragalactic Survey

open access: yesThe Astrophysical Journal
The Time Domain Extragalactic Survey (TiDES) conducted on the 4 m Multi-Object Spectroscopic Telescope will perform spectroscopic follow-up of extragalactic transients discovered in the era of the NSF-DOE Vera C. Rubin Observatory. TiDES will conduct a 5
C. Frohmaier   +26 more
doaj   +1 more source

Home - About - Disclaimer - Privacy