Results 171 to 180 of about 1,000,727 (374)

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

On Its Way to the Neutron Star–White Dwarf Binary Graveyard, IGR J16194−2810, A First Ascent M Giant X-Ray Binary

The Astrophysical Journal
A single-lined spectroscopic orbit for the M giant in the X-ray binary IGR J16194−2810 is determined from a time series of optical spectra. The spectroscopic orbital period of 192.5 days is twice that of the photometric period, confirming that the M ...
Kenneth H. Hinkle, Francis C. Fekel, Oscar Straniero, Zachary G. Maas, Richard R. Joyce, Thomas Lebzelter, Matthew W. Muterspaugh, James R. Sowell   +7 more
doaj   +1 more source

The role of the radiation pressure gradient in giant and supergiant star evolution [PDF]

, 1984
W. M. Brunish, A. N. Cox, S. A. Becker, K. H. Despain   +3 more
openalex   +1 more source

Molecular‐Level Dual‐Ionophilic Passivation for High‐Areal‐Capacity Lithium Metal Anodes on Nanostructured Paper Electrodes

Advanced Functional Materials, EarlyView.
The effect of a molecular‐level dual‐ionophilic chitosan passivation layer is investigated on a nanostructured paper electrode featuring an interconnected network structure of highly oxygen‐functionalized single‐walled carbon nanotubes (C‐NPE). This molecular coating enabled a high Coulombic efficiency (>99.0%) and stable cycling over 350 cycles at an ...
Jisoo Kim, Yeong Hoon Heo, Jeonghun Lee, Son Ha, Jimin Park, Jong Chan Hyun, Minhyuck Park, Dong Hyuk Kang, Jung Hoon Kim, Hyoung‐Joon Jin, Joong Tark Han, Young Soo Yun   +11 more
wiley   +1 more source

Amplitudes of solar-like oscillations in red giants: Departures from the quasi-adiabatic approximation

EPJ Web of Conferences, 2013
CoRoT and Kepler measurements reveal us that the amplitudes of solar-like oscillations detected in red giant stars scale from stars to stars in a characteristic way. This observed scaling relation is not yet fully understood but constitutes potentially a
Barban C., Ludwig H.-G., Goupil M.J., Dupret M.-A., Belkacem K., Samadi R., Baudin F., Caffau E.   +7 more
doaj   +1 more source

Giant Planet, Brown Dwarf, and Low-Mass Star Interiors [PDF]

, 1994
W. B. Hubbard
openalex   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

The Impact of Shear on Disk Galaxy Star Formation Rates

The Astrophysical Journal Letters
Determining the physical processes that control galactic-scale star formation rates is essential for an improved understanding of galaxy evolution. The role of orbital shear is currently unclear, with some models expecting reduced star formation rates ...
Xena Fortune-Bashee, Jiayi Sun, Jonathan C. Tan   +2 more
doaj   +1 more source

Star-to-Star Abundance Variations among Bright Giants in the Mildly Metal-poor Globular Cluster M4 [PDF]

, 1999
Inese I. Ivans, C. Sneden, Robert P. Kraft, N. B. Suntzeff, Verne V. Smith, G. E. Langer, J. P. Fulbright   +6 more
openalex   +1 more source

The Swallowing of Planets by Giant Stars

, 1998
We present simulations of the accretion of a massive planet or brown dwarf by an AGB star. In our scenario, close planets will be engulfed by the star, spiral-in and be dissipated in the ``accretion region'' located at the bottom of the convective envelope of the star.
Siess, Lionel, Livio, Mario
openaire   +2 more sources