Results 81 to 90 of about 957,509 (334)
, 2005 The Nikolaev Astronomical Observatory (NAO) was founded in 1821. In the initial “naval” time of its growth the observatory also carried out some works of an astronomical character.
Shulga, A.V. +2 more
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Advanced Science, EarlyView.We demonstrate that the inverse relationship between viscosity and conductivity in structured electrolytes can be circumvented by leveraging their hydrogen bonding networks for Grotthuss proton transport. Using a mixture of imidazole and levulinic acid, we show that the existence of extended hydrogen‐bonded chains that can rapidly reorient result in ...
Benworth B. Hansen +15 more
wiley +1 more source
A Hierarchical Point-spread Function Reconstruction Method
The Astrophysical JournalReconstruction of the point-spread function (PSF) plays an important role in many areas of astronomy, including photometry, astrometry, galaxy morphology, and shear measurement.
Pedro Alonso, Jun Zhang, Cong Liu
doaj +1 more source
Freestanding PZT Films for Integrated Wearable Sensing and Intelligent Acoustic Recognition
Advanced Science, EarlyView.A freestanding epitaxial PZT/LaNiO3/Pt heterostructure is achieved via water‐assisted delamination from mica, effectively eliminating substrate‐induced clamping and releasing intrinsic ferroelectricity. The released film exhibits substantially enhanced remanent polarization and piezoelectric response, delivering excellent mechanical flexibility and ...
Hailong Pan +6 more
wiley +1 more source
Optical Access to Dark Excitons Via Spin–Phonon Fano Interference
Advanced Science, EarlyView.Dark excitons in quantum dots neither absorb nor emit light and stay hidden from optical spectroscopy. Quantum interference now reveals them: light scattered by acoustic phonons interferes with a phonon‐assisted spin flip between bright and dark exciton, carving a Fano dip into the spectrum whose position gives the bright–dark splitting. Magnetic field,
Janina J. Schindler +7 more
wiley +1 more source
The Astrophysical Journal Supplement SeriesRecently we had reported commissioning of a prototype for pulsar observations at low radio frequencies (
Kshitij S. Bane +4 more
doaj +1 more source
Open Astronomy, 2011 Technological and scientific developments during the past century made a new branch of astronomy flourish, i.e. astrophysics, and resulted in our present deep understanding of the whole Universe.
Høg E.
doaj +1 more source
Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications
Advanced Science, EarlyView.Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin +6 more
wiley +1 more source
Design and Performance of a 30/40 GHz Diplexed Focal Plane for the BICEP Array
The Astrophysical Journal Supplement SeriesWe demonstrate a wideband diplexed focal plane suitable for observing low-frequency foregrounds that are important for cosmic microwave background polarimetry.
Corwin Shiu +13 more
doaj +1 more source
A laser cleaning system for astronomical mirrors
, 2022 SPIE Astronomical Telescopes + Instrumentation 2022SPIE Astronomical Telescopes + Instrumentation 2022, 17 - 22 July 2022, Montréal, Québec, CanadaReflectivity loss due to dust deposition over primary mirrors is a key issue for ground-based astronomical ...
Gonzalo de los Reyes, J. +4 more
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