Results 61 to 70 of about 52,830 (299)

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni   +10 more
wiley   +1 more source

Collision Probability Evaluation of LAMOST Robotic Fiber Positioners in the Design Phase

open access: yesThe Astronomical Journal
Multiobject spectroscopic telescopes are crucial for modern astronomy. Among them, the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), with thousands of robotic fiber positioners (RFPs), is the one with the highest spectra acquisition
Baolong Chen   +6 more
doaj   +1 more source

Photonic ring resonator filters for astronomical OH suppression

open access: yes, 2017
Ring resonators provide a means of filtering specific wavelengths from a waveguide, and optionally dropping the filtered wavelengths into a second waveguide. Both of these features are potentially useful for astronomical instruments.
Bland-Hawthorn, J.   +11 more
core   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

open access: yesAdvanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah   +2 more
wiley   +1 more source

Guangqi: A 2D Radiation Hydrodynamic Code with Realistic Equations of State

open access: yesThe Astrophysical Journal Supplement Series
We present Guangqi , a new 2D, finite-volume radiation hydrodynamics code designed for high-performance astrophysical simulations. The code simultaneously resolves the hydrodynamic equations for complex equations of state (EoS) and implicit radiation ...
Zhuo Chen, Xue-Ning Bai
doaj   +1 more source

Optical Design Interim Progress Report, Dec. 1, 1964 - Feb. 28, 1965 [PDF]

open access: yes
Optical instrumentation for use in Orbiting Astronomical Observatory ...
Hochgraf, N., Mostrom, R.
core   +1 more source

A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase

open access: yesAdvanced Science, EarlyView.
Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol   +18 more
wiley   +1 more source

Optical Design of a Near-infrared Spectrograph Prototype for LAMOST

open access: yesThe Astronomical Journal
The Large Sky Area Multi-Object Fiber Spectroscopy Telescope (LAMOST) has demonstrated exceptional capability in optical spectroscopic surveys. To overcome its inherent limitations in observing late-type stars and regions of high extinction, we present ...
Xiaojie Zhang   +4 more
doaj   +1 more source

Liquid Metal Nanotransformers for Drug‐Resistant Pan‐Cancer Therapy in Patient‐Derived Organoids

open access: yesAdvanced Science, EarlyView.
Pan‐cancer therapies are severely limited in drug‐resistance patients due to genetic mutations and other factors, resulting in poor therapeutic outcomes and constrained clinical benefit. Liquid metal nanotransformers, a new class of shape‐transformable nanomaterials capable of dramatic morphological changes, offer a promising physical strategy to ...
Xiaojie Yuan   +19 more
wiley   +1 more source

The growth of interest for astronomical X-ray polarimetry

open access: yes, 2018
Astronomical X-ray polarimetry was first explored in the end of the 60's by pioneering rocket instruments. The craze arising from the first discoveries on stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters on-board
Marin, F.
core   +1 more source

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