Results 151 to 160 of about 234,039 (316)

Merging history trees of dark matter haloes: a tool for exploring galaxy formation models [PDF]

open access: bronze, 1997
Boudewijn F. Roukema   +3 more
openalex   +1 more source

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

open access: yesAdvanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe   +7 more
wiley   +1 more source

Recent Advances in Single‐Atom Catalyst for Solar Energy Conversion: A Comprehensive Review and Future Outlook

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights the potential of single‐atom catalysts in three key photocatalytic reactions: the hydrogen evolution reaction (HER), nitrogen reduction reaction for ammonia synthesis, and carbon dioxide reduction reaction (CO2RR) for chemical fuels.
Saad Mehmood   +5 more
wiley   +1 more source

Electroplating of Wear‐ and Corrosion‐Resistant CrCoNi Medium‐Entropy Alloys beyond Hard Chromium Coatings

open access: yesAdvanced Functional Materials, EarlyView.
The electroplating of a CrCoNi medium‐entropy alloy is achieved using a mixture of an ionic liquid and an aqueous solution containing metal salts. The CrCoNi medium‐entropy alloy thin film exhibits high wear and corrosion resistance superior to conventional hard chromium coatings. Abstract High‐entropy alloys (HEAs) and medium‐entropy alloys (MEAs) are
Yuki Murakami   +7 more
wiley   +1 more source

Modeling the black holes surrounded by a dark matter halo in the galactic center of M87

open access: yesEuropean Physical Journal C: Particles and Fields
In this paper, the structure of a dark matter halo can be well described by the mass model of M87 and the Einasto profile for the cold dark matter model, i.e., $$\rho _{\text {eina}} (r)=\rho _\text {e} \exp ( -2 \alpha ^{-1} ((r/r_\text {e})^\alpha -1 )
Dong Liu   +3 more
doaj   +1 more source

Excursion set approach to the clustering of dark matter haloes in Lagrangian space [PDF]

open access: bronze, 1998
C. Porciani   +3 more
openalex   +1 more source

Oxidation‐Driven Enhancement of Intrinsic Properties in MXene Electrodes for High‐Performance Flexible Energy Storage

open access: yesAdvanced Functional Materials, EarlyView.
By employing a partial oxidation strategy, nanosized pores are introduced into MXene nanosheets. The resulting holey MXene exhibits faster ionic transport, achieving an aerial capacitance 2.5 times that of unmodified MXene electrodes, and demonstrates excellent cycling stability, retaining 91.7% of its capacitance after 10 000 cycles.
Yongfa Cheng   +7 more
wiley   +1 more source

Shielding of a direct detection experiment and implications for the DAMA annual modulation signal

open access: yesPhysics Letters B, 2019
Previous work has argued that, in the framework of plasma dark matter models, the DAMA annual modulation signal can be consistently explained with electron recoils.
R. Foot
doaj  

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

open access: yesAdvanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin   +11 more
wiley   +1 more source

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