Results 111 to 120 of about 171,913 (339)

Ground-based Microlensing Surveys [PDF]

open access: yesarXiv, 2007
Microlensing is a proven extrasolar planet search method that has already yielded the detection of four exoplanets. These detections have changed our understanding of planet formation ``beyond the snowline'' by demonstrating that Neptune-mass planets with separations of several AU are common.
arxiv  

Co‐Enriched High Entropy Oxides for Efficient Continuous Electrochemical Methane Conversion: Catalytic Performance and Sustainability Insights

open access: yesAdvanced Materials, EarlyView.
A Co‐rich high‐entropy oxide (HEO) catalyst enables efficient electrochemical methane‐to‐ethanol conversion at room temperature. By leveraging elemental enrichment, the catalyst achieves high selectivity and stability, outperforming conventional systems.
Heewon Min   +6 more
wiley   +1 more source

Efficient Autonomous Dew Water Harvesting by Laser Micropatterning: Superhydrophilic and High Emissivity Robust Grooved Metallic Surfaces Enabling Filmwise Condensation and Radiative Cooling

open access: yesAdvanced Materials, EarlyView.
Laser micropatterning is presented as a promising technology in the search for autonomous dew water harvesting materials. Laser‐grooved metallic surfaces achieve simultaneously high infrared emissivity and superhydrophilicity, which gives them self‐cooling properties under atmospheric radiative deficit and the ability to condense water in an efficient ...
Pablo Pou‐Álvarez   +7 more
wiley   +1 more source

Disk Evolution, Element Abundances and Cloud Properties of Young Gas Giant Planets

open access: yesLife, 2014
We discuss the chemical pre-conditions for planet formation, in terms of gas and ice abundances in a protoplanetary disk, as function of time and position, and the resulting chemical composition and cloud properties in the atmosphere when young gas giant
Christiane Helling   +5 more
doaj   +1 more source

On the properties of free floating planets originating in circumbinary planetary systems [PDF]

open access: yesarXiv
Free-floating planets are a new class of planets recently discovered. These planets don't orbit within stellar systems, instead living a nomadic life within the galaxy. How such objects formed remains elusive. Numerous works have explored mechanisms to form such objects, but have not yet provided predictions on their distributions that could ...
arxiv  

Challenges and Opportunities of Upconversion Nanoparticles for Emerging NIR Optoelectronic Devices

open access: yesAdvanced Materials, EarlyView.
The special photo‐responsiveness of upconversion nanoparticles has opened up a new path for the advancement of near‐infrared (NIR)‐responsive optoelectronics. However, challenges such as low energy‐conversion efficiency and high nonradiative losses still persist.
Sunyingyue Geng   +7 more
wiley   +1 more source

Highly Heterogeneous Parent Body of the Rare Andesitic Erg Chech 002 Meteorite Revealed by the Revisited Mn–Cr Isotopic Systematics

open access: yesThe Planetary Science Journal
Erg Chech 002 (EC 002), an andesitic meteorite, has been dated to be the oldest magmatic rock in the solar system. However, controversy has arisen due to inconsistent dating results and isotopic compositions in previous studies, which complicates ...
Bing Yang   +5 more
doaj   +1 more source

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