Results 171 to 180 of about 2,275,942 (365)

Radial velocities and membership of stars in the old, distant open cluster Berkeley 29

open access: yes, 2004
Multi slit spectroscopy at the Telescopio Nazionale Galileo was employed to measure radial velocities for 20 stars in the direction of the old open cluster Berkeley 29, the farthest known in our Galaxy.
A. Bragaglia   +25 more
core   +1 more source

Bismuthene Under Cover: Graphene Intercalation of a Large Gap Quantum Spin Hall Insulator

open access: yesAdvanced Materials, EarlyView.
Bismuthene, a quantum spin Hall insulator with a massive 800 meV topological gap, holds great potential for room‐temperature devices but rapidly degrades in air. This study demonstrates that intercalating bismuthene between SiC and a graphene sheet preserves its structure and topology while preventing oxidation, enabling ex‐situ experiments and ...
Lukas Gehrig   +7 more
wiley   +1 more source

Red Giant Stars in NGC 5128 [PDF]

open access: yes, 2006
I present a selection of results obtained from VLT FORS1 and ISAAC photometric monitoring of late-type giants in NGC 5128 (=Centaurus A). The combination of optical and near-IR photometry allows to probe the full metallicity range of the stars on the upper red giant branch, thanks to combined low-metallicity sensitivity of the optical and high ...
openaire   +2 more sources

A Photonastic Prototissue Capable of Photo‐Mechano‐Chemical Transduction

open access: yesAdvanced Materials, EarlyView.
Mimicking energy transduction in prototissue assemblies remains a challenge of bottom‐up synthetic biology. In this work, prototissues integrating protocells with photothermal gold nanoparticle proto‐organelles and a thermoresponsive polymeric proto‐cortex are developed.
Agostino Galanti   +7 more
wiley   +1 more source

Tailoring Robust Quantum Anomalous Hall Effect via Entropy‐Engineering

open access: yesAdvanced Materials, EarlyView.
Bandstructure renormalization, without (w/o) spin‐orbit interaction (SOI) (left) and with SOI (right), in the low‐energy Dirac bands of zero‐entropy (purple) and entropic (green) VCl3 monolayer (ML) with long‐range ordering (LRO). Abstract The development of quantum materials and the tailoring of their functional properties is of fundamental interest ...
Syeda Amina Shabbir   +3 more
wiley   +1 more source

Suppressing Metal Dissolution in Multi‐Grained Catalysts Through Intragrain Atomic Ordering for Stable Fuel Cells

open access: yesAdvanced Materials, EarlyView.
This study presents a novel approach room‐temperature ultrasound assisted atomic ordering method using to fabricate multi‐grained NiPt nanoalloys with an intermetallic Ni3Pt5 phase. The resulting catalyst exhibits state‐of‐the‐art durability and activity in all operational condition of proton exchange membrane fuel cells. Structural and electrochemical
Eungjun Lee   +20 more
wiley   +1 more source

Flippase‐Mediated Hybrid Vesicle Division

open access: yesAdvanced Materials, EarlyView.
The successful reconstitution of Drs2p–Cdc50p flippase in small and giant polymer lipid hybrid vesicles is illustrated. The hybrid vesicles show adenosine 5′‐triphosphate consumption and flipping of 2‐dioleoyl‐sn‐glycero‐3‐phospho‐l‐serine lipids from the inner to the outer leaflet.
Paula De Dios Andres   +5 more
wiley   +1 more source

Testing the Breakdown of the Asteroseismic Scaling Relations in Luminous Red Giants

open access: yesThe Astrophysical Journal
Nearly all cool, evolved stars are solar-like oscillators, and fundamental stellar properties can be inferred from these oscillations with asteroseismology.
Amanda L. Ash   +3 more
doaj   +1 more source

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