Results 91 to 100 of about 9,035 (308)
Optical Windows for Transcranial Brain Imaging in Living Mice: Skull Thinning, Clearing, and Beyond
Advanced Science, EarlyView.Longitudinal, noninvasive in vivo imaging is crucial for studying brain physiology. Advances in transcranial optical windows and multiphoton microscopy have improved imaging depth, but their performance often deteriorates over time. This work investigated various transcranial window approaches and found that skull regrowth limits image quality.
Yiming Fu +5 more
wiley +1 more source
PhotonicsNd:glass has become the predominant gain medium for achieving high-energy laser outputs to the order of hundreds of joules, owing to its high energy storage capacity, capacity for large apertures, and excellent optical homogeneity.
Yangyang Chen +8 more
doaj +1 more source
Wavefront aberrations of high numerical aperture X-ray optics
, 2021 The achievable resolution in hard X-ray microscopy is limited by inherent lensaberrations, which makes the characterization of wavefront aberrations a criticaltask for pushing the limits of microscopy. The main goal of this thesis is to developand employ
Murray, Kevin
core +1 more source
Advanced Electronic Materials, EarlyView.A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen +8 more
wiley +1 more source
OftalʹmologiâThe cornea is the most powerful refractive element of the eye and plays a fundamental role in the quality of vision. Imperfection of corneas shape leads to the focusing errors formation, known as optical aberrations, which are responsible for visual ...
D. A. Khvan, G. A. Fedyashev
doaj +1 more source
Microfluctuations of Wavefront Aberrations of the Eye
, 2005 The human eye suffers various optical aberrations that degrade the retinal image. These aberrations include defocus and astigmatism, as well as the higher order aberrations that also play an important role in our vision.
Zhu, Mingxia
core
Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
An experimental Rayleigh laser guide star ground layer adaptive optics system for the William Herschel telescope [PDF]
, 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
Holographic Mapping of Orbital Angular Momentum using a Terahertz Diffractive Optical Neural Network
Advanced Intelligent Discovery, EarlyView.A compact six‐layer diffractive optical neural network enables direct recognition and spatial mapping of terahertz (THz) orbital angular momentum (OAM) beams. Fabricated by 3D printing, the system distinguishes nine OAM modes and their superpositions with high fidelity, good efficiency, and low crosstalk, offering a scalable solution for THz ...
Wei Jia +3 more
wiley +1 more source
Arquivos Brasileiros de Oftalmologia, 2012 PURPOSE To evaluate the differences of wavefront aberrations under cycloplegic, scotopic and photopic conditions. METHODS A total of 174 eyes of 105 patients were measured using the wavefront sensor (WaveScan® 3.62) under different pupil conditions ...
Rong Fan +5 more
semanticscholar +1 more source