Results 91 to 100 of about 5,099,090 (216)

Computer-generated holograms embedded in bulk silicon with nonlinear laser lithography [PDF]

open access: yes, 2016
Date of Conference: 5-10 June 2016Conference Name: Conference on Lasers and Electro-Optics, CLEO 2016Recently, we have showed a direct laser writing method to form subsurface structures inside silicon by exploiting nonlinear interactions.
Ghaith Makey   +9 more
core   +1 more source

A Compact Resistively Loaded Metamaterial Absorber for 2.4 GHz RF Energy Harvesting With Impedance‐Matched Rectifier Analysis

open access: yesAdvanced Electronic Materials, EarlyView.
A compact resistively loaded metamaterial absorber captures RF energy at 2.4 GHz and directs most of the accepted power to modeled loads. The resonant response is confirmed experimentally for the fabricated absorber, while an impedance‐matched rectifier is evaluated through simulation. The stage‐wise results distinguish absorber, rectifier, and cascade
Md. Murad Kabir Nipun, Md. Jahedul Islam
wiley   +1 more source

Computer generated holograms for optical neural networks [PDF]

open access: yes, 2001
While numerous artificial neural network (ANN) models have been electronically implemented and simulated by conventional computers, optical technology provides a far superior mechanism for the implementation of large-scale ANNs.
Loochan, F., Kaikhah, Khosrow
core   +1 more source

Broadband Near‐Field Computational Microwave Imaging Enabled by Nonperiodic Dispersive Unit‐Cell Loading in a Passive Metasurface

open access: yesAdvanced Electronic Materials, EarlyView.
A compact passive engineered surface converts changes in microwave frequency into many distinct illumination patterns, allowing nearby objects to be imaged without mechanical scanning, active tuning, or a large antenna array. Operating from 18 to 28 GHz, the single‐port system uses measured field patterns to reconstruct metallic targets and distinguish
Mohammed H. Arif   +6 more
wiley   +1 more source

Computer generated volume holograms fabricated on a coreless fiber tip by two photon polymerization [PDF]

open access: yesEPJ Web of Conferences
Computer-generated volume holograms (CGVHs) contain 3D refractive index modulations designed to create complex-shaped wave fields for various optical applications.
Jalili Mansoureh   +3 more
doaj   +1 more source

Physical Unclonable Functions From Microwave Metasurface Fingerprints

open access: yesAdvanced Electronic Materials, EarlyView.
Nominally identical metasurfaces fabricated through standard PCB processes inevitably contain microscopic fabrication imperfections. This work demonstrates that these unavoidable electromagnetic deviations can serve as unique physical unclonable fingerprints for wireless authentication.
Guanxiong Shen   +4 more
wiley   +1 more source

Optimization of computer-generated transmission holograms using different LED wavefront approximations [PDF]

open access: yes, 2017
The reconstruction of computer-generated transmission volume holograms with light-emitting diodes (LEDs) requires the adaptation of the holograms to the specific diodes' wavefronts.
Giehl, Markus   +3 more
core  

Computer-Generated Holograms for 3D Imaging: A Survey

open access: yes, 2020
Holography is usually considered as the ultimate way to visually reproduce a three-dimensional scene. Computer-generated holography constitutes an important branch of holography, which enables visualization of artificially generated scenes as well as ...
Stoykova, Elena   +3 more
core   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

open access: yesAdvanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss   +21 more
wiley   +1 more source

Reduction in the reconstruction error of computer-generated holograms by photorefractive volume holography

open access: yes, 1993
We suggest a method for coding high-resolution computer-generated volume holograms. It involves splitting the computer-generated hologram into multiple holograms, their individual recording as volume holograms by use of the maximal resolution available ...
Joseph Rosen   +3 more
core  

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