Results 61 to 70 of about 9,355,325 (300)

An experimental Rayleigh laser guide star ground layer adaptive optics system for the William Herschel telescope [PDF]

open access: yes, 2005
The design of an experimental ground layer adaptive optics (GLAO) system that uses a low altitude Rayleigh laser guide star as a wavefront reference source is presented.
Morris, T J, Morris, T. J.
core  

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

open access: yesAdvanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son   +20 more
wiley   +1 more source

High quality factor metasurfaces for two-dimensional wavefront manipulation

open access: yesNature Communications, 2023
The strong interaction of light with micro- and nanostructures plays a critical role in optical sensing, nonlinear optics, active optical devices, and quantum optics.
Claudio U. Hail   +4 more
doaj   +1 more source

Wavefront-Guided and Wavefront-Optimised Laser Treatments

open access: yes, 2012
Optical aberrations of the eye are the errors of the optical system that limit the resolution, contrast and amount of detail in the image formed on the retina. Wavefront technology allows us to measure these optical aberrations, calculate mathematically,
Canan Aslı Utine, YILDIRIM, CANAN ASLI
core   +1 more source

Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures

open access: yesAdvanced Materials, EarlyView.
A uniaxial moiré potential in misfit (MS)1+δTaS2 heterostructures selectively reshape charge order: the embedded 1H‐TaS2 layer hosts an incommensurate charge‐density wave, fragmented into nanometer domains and stripped of threefold symmetry. Superconductivity, however, remains uniform and fully gapped, revealing heterosymmetry stacking as a selective ...
Sandra Sajan   +12 more
wiley   +1 more source

Modern approaches to cataract surgery with high visual acuity based on wavefront analysis

open access: yesОфтальмохирургия, 2023
Relevance. Until recently, visual acuity was the main criterion for determining the timing of surgery, but already in the early stages of cataract development, patients may suffer from reduced image quality, which affects the quality of life (“night ...
O.V. Shilovskikh   +3 more
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja   +9 more
wiley   +1 more source

A clock and wavefront mechanism for somite formation [PDF]

open access: yes, 2006
Somitogenesis, the sequential formation of a periodic pattern along the antero-posterior axis of vertebrate embryos, is one of the most obvious examples of the segmental patterning processes that take place during embryogenesis and also one of the major ...
Maini, P. K.   +8 more
core   +1 more source

FPGA-accelerated adaptive optics wavefront control part II

open access: yes, 2022
Paper 93430Y, 13 S.We present progressive work that is based on our recently developed rapid control prototyping system (RCP), designed for the implementation of high-performance adaptive optical control algorithms using a continuous deformable mirror ...
Reger, Johann   +5 more
core   +1 more source

ELT METIS wavefront control strategy

open access: yesAdaptive Optics Systems VIII, 2022
EPIC
Correia, Carlos M.   +10 more
openaire   +1 more source

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