Results 51 to 60 of about 26,265 (227)

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

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee   +4 more
wiley   +1 more source

Aerial Projection 3D Display Based on Integral Imaging

open access: yesPhotonics, 2021
We proposed an aerial projection 3D display based on integral imaging. It is composed of a projector, a lens-array holographic optical element (HOE), and two parabolic mirrors.
Wu-Xiang Zhao   +4 more
doaj   +1 more source

Expanding the toolbox for nanoparticle trapping and spectroscopy with holographic optical tweezers [PDF]

open access: yes, 2012
We have developed a workstation based on holographic tweezers to optically trap, move and characterize metal nanoparticles. Our advanced darkfield imaging system allows us to simultaneously image and take spectra of single trapped metal nanoparticles. We
Dienerowitz, F.   +3 more
core   +1 more source

Phototunable Polarization Volume Gratings Driven by Chiral Hydrazone Switches

open access: yesAdvanced Optical Materials, EarlyView.
Chiral hydrazone photoswitches incorporated into polarization volume gratings enable light‐driven, reversible modulation of optical properties. UV and blue light irradiation reversibly alter the hydrazone isomer ratio, leading to tunable diffraction efficiency and spectral response across the visible spectrum.
Artem Boichuk   +4 more
wiley   +1 more source

Holographic mensuration of suspended particles in aquatic systems [PDF]

open access: yes, 1995
The distribution and dynamics of aggregates in the aquatic environment play an important role in the modelling of biogeochemical processes. Previous work on aggregates in the ocean (e.g.
Hobson, PR   +4 more
core  

Method for controlling the shift invariance of optical correlators [PDF]

open access: yes, 1999
Holographic correlators can implement many correlations in parallel. For most systems shift invariance limits the number of correlation templates that can be stored in one correlator.
Levene, Michael   +2 more
core   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna   +4 more
wiley   +1 more source

Foveated Retinal Optimization for See-Through Near-Eye Multi-Layer Displays

open access: yesIEEE Access, 2018
In order to implement 3-D displays with focus cues, several technologies, including multi-layer displays, have been introduced and studied. In multi-layer displays, a volumetric 3-D scene is represented by 2-D layer images via optimization process ...
Seungjae Lee   +6 more
doaj   +1 more source

Multi-Illumination Single-Holographic-Exposure Lensless Fresnel (MISHELF) Microscopy: Principles and Biomedical Applications

open access: yesSensors, 2023
Lensless holographic microscopy (LHM) comes out as a promising label-free technique since it supplies high-quality imaging and adaptive magnification in a lens-free, compact and cost-effective way.
José Ángel Picazo-Bueno   +4 more
doaj   +1 more source

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