Results 81 to 90 of about 2,844,522 (254)

Adaptive Active Illumination Via Translationally and Axially Tunable Cascaded Metasurfaces

open access: yesAdvanced Science, EarlyView.
Active three‐dimensional sensing faces a fundamental trade‐off between seeing farther and covering more of the scene. Translationally and axially tunable cascaded metasurfaces overcome this limitation by continuously adapting beam direction and illumination coverage.
Chi Zhang   +10 more
wiley   +1 more source

Confocal-wavefront-shaping-code

open access: yes
Code for the paper "Non-invasive and noise-robust light focusing using confocal wavefront shaping"
Dror Aizik (18112474)
core   +1 more source

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  

Dynamic Supercooled Crystal–Gels for Ultrafast, Reversible Mechanical Adaptative Materials

open access: yesAdvanced Science, EarlyView.
A dynamic supercooled crystal–gel mimics starfish tissue by storing non‐equilibrium energy in a metastable liquid. A gentle touch triggers templated crystallization, producing a 2596‐fold stiffness increase with negligible volume change. The lattice disintegrates reversibly under humidity or warmth.
Yuesong Lv   +9 more
wiley   +1 more source

Complete measurement of fiber modal content by wavefront analysis

open access: yes, 2012
International audienceWe propose and demonstrate the use of a wavefront analyzer based on lateral shearing interferometry to characterize the modal content of multimode fibers.
Druon, Frédéric   +4 more
core   +2 more sources

Research on Nanometer Precision Measurement Method of High Order Even Aspheres

open access: yesApplied Sciences
Optical aspheres are demanded with extremely high precision to meet functional requirements in space telescopes, extreme ultraviolet lithography, and other modern large optical systems.
Hao Xu, Junfeng Liu, Shanyong Chen
doaj   +1 more source

Variability of wavefront aberration measurements in small pupil sizes using a clinical Shack-Hartmann aberrometer

open access: yesBMC Ophthalmology, 2004
Background Recently, instruments for the measurement of wavefront aberration in the living human eye have been widely available for clinical applications.
Pallikaris Aristophanis   +2 more
doaj   +1 more source

Computer simulation of visual outcomes of wavefront-only corneal ablation

open access: yes, 2006
Purpose. \ud To evaluate the effectiveness, predicted visual outcome, and limitations of a corneal ablation algorithm that uses wavefront aberration measurement alone without the need for corneal shape information.\ud \ud Setting.
Iskander, D. Robert   +7 more
core   +1 more source

Rethinking Cochlear Implants: The Need for Precise Temporal Coding

open access: yesAdvanced Science, EarlyView.
Spatial hearing relies on sensitivity to interaural temporal cues, but this sensitivity is often poorly developed in patients with cochlear implants, particularly those with early‐onset hearing loss. Rats with cochlear implants, however, demonstrate excellent temporal sensitivity, suggesting that this limitation is not inevitable.
Nicole Rosskothen‐Kuhl   +1 more
wiley   +1 more source

Large-Aperture Real-Time Compensated Collimating Wavefront Error Detection Method

open access: yesApplied Sciences, 2019
This paper proposes a real-time compensated pentaprism scanning wavefront detection method to achieve real-time compensation for scanning errors occurring during prism movement along a guide rail.
Xueliang Zhu   +5 more
doaj   +1 more source

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