Results 101 to 110 of about 237,261 (271)
Shapeshifting Nanocatalyst for CO2 Conversion
Advanced Materials, EarlyView.A multi‐modal in situ characterization of Ag‐Cu nanoparticles during CO2 photoreduction sheds light on dynamic transformations occurring during reaction. The Cu(core)‐Ag(shell) nanoparticles present the Ag replacement by Cu atoms. Ag is trapped at the subsurface forming a Ag‐Cu‐O phase, and the nanoparticle spreads over the substrate.
Gustavo Zottis Girotto +10 more
wiley +1 more source
Advanced Materials, EarlyView.The ability to grow nanostructures based on inorganic helical crystals with long‐range order will enable a platform to realize physical states that arise from chirality. Herein, it is demonstrated that controlled vapor phase deposition of an atomically precise helical crystal, GaSI, into ultrathin 1D nanowires and quasi‐2D nanoribbons.
Kaitlyn G. Dold +15 more
wiley +1 more source
An Empirical Study On Imaging Sensitivity Of SKA1-LOW Based on Point Source Sensitivity
The Astronomical JournalThe Square Kilometre Array (SKA) radio telescope will achieve unparalleled sensitivity and angular resolution, substantially progressing our research into the formation and development of the early universe.
Zhaotong Xie +4 more
doaj +1 more source
The Origin and Significance of the Twenty-Four Solar Terms in China
Contemporary Social Sciences, 2017 The “Twenty-Four Solar Terms” is an integrated knowledge system and functional social practice initiated and developed by ancient Chinese. Appling to their daily lives and agricultural production, based on records of the periodic motions of the sun ...
Xu Wangsheng
doaj +1 more source
A Search for Neutrino Emission from Fast Radio Bursts with Six Years of IceCube Data [PDF]
, 2018 We present a search for coincidence between IceCube TeV neutrinos and fast radio bursts (FRBs). During the search period from 2010 May 31 to 2016 May 12, a total of 29 FRBs with 13 unique locations have been detected in the whole sky. An unbinned maximum
Andeen, Karen
core +1 more source
Anisotropic cosmological models with two fluids
, 2018 In this paper, aniostropic dark energy cosmological models have been constructed in a Bianchi-V space-time with the energy momentum tensor consisting of two non-interacting fluids namely bulk viscous fluid and dark energy fluid.
Mishra, B. +2 more
core +2 more sources
Advanced Materials, EarlyView.Dielectric dual gradient metasurfaces supporting quasi‐bound‐states‐in‐the‐continuum are leveraged to spatially encode both the spectral and coupling parameter space and demonstrate ultra‐strong coupling to an epsilon‐near‐zero mode in an ultra‐thin SiO2 layer.The platform achieves exceptional mode overlap, reaching a normalized coupling strength of η =
Enrico Baù +7 more
wiley +1 more source
The Orbit and Dynamical Mass of Polaris: Observations with the CHARA Array
The Astrophysical JournalThe 30 yr orbit of the Cepheid Polaris has been followed with observations by the Center for High Angular Resolution Astronomy (CHARA) Array from 2016 through 2021.
Nancy Remage Evans +21 more
doaj +1 more source
Resonant Interlayer Coupling in NbSe2‐Graphite Epitaxial Moiré Superlattices
Advanced Materials, EarlyView.Combining angle‐resolved photoemission spectroscopy and density functional theory derived calculations, this work reveals strong interlayer coupling and moiré replicas of the graphite π states in molecular‐beam epitaxy grown van der Waals heterostructures of monolayer‐NbSe2/graphite, with implications for its collective phases that form. Abstract Moiré
Shu Mo +11 more
wiley +1 more source
The Astrophysical Journal Supplement SeriesDiscovering and characterizing exoplanets at the outer edge of the transit method’s sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines.
Paul A. Dalba +31 more
doaj +1 more source