Results 181 to 190 of about 4,188,611 (364)

Cloud Inspired White and Grey Plasmonic Metasurfaces for Camouflaged Thermal Management

open access: yesAdvanced Materials, EarlyView.
Inspired by clouds' role in Earth's thermal management, this work presents disordered plasmonic metasurfaces that mimic their radiative effects. The white metasurface enhances backscattering, acting as a cooling layer with camouflage properties.
Mhd Adel Assad   +6 more
wiley   +1 more source

Photometric Redshift Estimation of Quasars by a Cross-modal Contrast Learning Method

open access: yesThe Astronomical Journal
Estimating photometric redshifts (photo- z ) of quasars is crucial for measuring cosmic distances and monitoring cosmic evolution. While numerous point estimation methods have successfully determined photo- z , they often struggle with the inherently ill-
Chen Zhang   +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

Unlocking NIR‐II Photoluminescence in 2D Copper Tetrasilicate Nanosheets through Flame Spray Synthesis

open access: yesAdvanced Materials, EarlyView.
A flame‐spray‐pyrolysis method is presented to synthesize ultra‐bright CTS nanosheets with tunable NIR‐II emission. Achieving quantum yields up to 34%, these materials support high‐speed imaging and enable super‐resolution in vivo applications such as transcranial microcirculation mapping and macrophage tracking.
Robert Nißler   +12 more
wiley   +1 more source

Redshift surveys [PDF]

open access: yesAstronomy and Geophysics, 2004
Sarah Bridle, Alan Heavens
openaire   +2 more sources

Atomically Precise Ruddlesden–Popper Faults Induced Enhanced Emission in Ligand Stabilized Mixed Halide Perovskites

open access: yesAdvanced Materials, EarlyView.
This study overcomes challenges in visualizing atomic‐level defects in perovskite nanocrystals, promising to significantly improve the stability and performance of quantum dot‐based light‐emitting devices. Using double‐Cs‐corrected transmission electron microscopy, the study enables atomic‐resolution imaging of elusive RuddlesdenPopper faults hidden ...
Somnath Mahato   +6 more
wiley   +1 more source

On the Feasibility of Deriving Pseudo-redshifts of Gamma-Ray Bursts from Two Phenomenological Correlations

open access: yesThe Astrophysical Journal
Accurate knowledge of gamma-ray burst (GRB) redshifts is essential for studying their intrinsic properties and exploring their potential applications in cosmology. Currently, only a small fraction of GRBs have independent redshift measurements, primarily
Emre S. Yorgancioglu   +5 more
doaj   +1 more source

Power spectrum analysis of one-dimensional redshift surveys

open access: yes, 1991
We consider the statistical properties of power spectra obtained from «pencil-beam» redshift surveys, with particular attention to the recent study by Broadhurst T.J. et al. (1990, Nature, 343).
N. Kaiser, J. Peacock
semanticscholar   +1 more source

Direct Laser Writing of Polymer Nanocomposites for Tunable Structural Color

open access: yesAdvanced Materials, EarlyView.
Herein, direct laser writing is used to polymerize self‐assembled nanocomposite materials. Using fabrication parameters, the interparticle spacing is finely tuned beyond the thermodynamically stable state. This is exploited to generate wide gamut structural color in water.
Teodora Faraone   +5 more
wiley   +1 more source

Topological Approach to Void Finding Applied to the SDSS Galaxy Map

open access: yesThe Astrophysical Journal
The structure of the low redshift Universe is dominated by a multiscale void distribution delineated by filaments and walls of galaxies. The characteristics of voids, such as morphology, average density profile, and correlation function, can be used as ...
Manu Aggarwal   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy