Results 51 to 60 of about 705,634 (314)

A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display

open access: yesApplied Sciences, 2019
A fast computer-generated holographic method with multiple projection images for a near-eye VR (Virtual Reality) and AR (Augmented Reality) 3D display is proposed.
Xin Yang, HongBo Zhang, Qiong-Hua Wang
doaj   +1 more source

Interferenceless coded aperture correlation holography with point spread holograms of isolated chaotic islands for 3D imaging

open access: yesScientific Reports, 2022
Interferenceless coded aperture correlation holography (I-COACH) is an incoherent digital holographic technique with lateral and axial resolution similar to a regular lens-based imaging system.
Nitin Dubey, Joseph Rosen
doaj   +1 more source

Arbitrary focusing lens by holographic metasurface

open access: yesPhotonics Research, 2015
In this paper, an ultrathin metalens has been proposed based on a holographic metasurface that consists of elongated apertures in 40 nm gold film, which exhibit intriguing properties such as on- and off-axis focusing and also can concentrate light into multiple, discrete spots for circularly polarized incident lights.
Rongzhen Li   +8 more
openaire   +1 more source

Holographic detection of nanoparticles using acoustically actuated nanolenses

open access: yesNature Communications, 2020
Detection of small, translucent particles is challenging due to their low inherent scattering. Here, the authors present an easy, high-throughput, label-free method for detecting nanoparticles in low volumes of liquids on a disposable chip, using an ...
Aniruddha Ray   +7 more
doaj   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

open access: yesAdvanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey   +12 more
wiley   +1 more source

Lensless Scheme for Measuring Laser Aberrations Based on Computer-Generated Holograms

open access: yesSensors, 2020
All of the existing holographic wavefront sensors are either bulky or have low accuracy of measuring wavefront aberrations. In this paper, we present an improvement of the holographic method of measuring wavefront aberrations using computer-generated ...
George Krasin   +4 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Formation of diffraction gratings in optically patternable hydrogel films

open access: yesNano Select, 2022
Local light‐induced material response forms the basis for volume holographic patterning of light‐responsive materials. This enables applications as multifunctional biomedical materials capable of integrating optical functions, such as for advanced ...
Tina Sabel‐Grau   +3 more
doaj   +1 more source

Manipulation and assembly of nanowires with holographic optical traps

open access: yes, 2005
We demonstrate that semiconductor nanowires measuring just a few nanometers in diameter can be translated, rotated, cut, fused and organized into nontrivial structures using holographic optical traps.
Agarwal, Ritesh   +5 more
core   +1 more source

Resolution Analysis in a Lens-Free On-Chip Digital Holographic Microscope [PDF]

open access: yesIEEE Transactions on Computational Imaging, 2019
Lens-free on-chip digital holographic microscopy (LFOCDHM) is a modern imaging technique whereby the sample is placed directly onto or very close to the digital sensor, and illuminated by a partially coherent source located far above it.
Jialin Zhang   +3 more
semanticscholar   +1 more source

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