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   Articles with "hologram" as a keyword



Three-dimensional hologram printing by single beam femtosecond laser direct writing

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recommendations! Published in 2018 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2017.08.033

Abstract: Abstract This article demonstrates three-dimensional (3D) hologram printing in polymethyl methacrylate (PMMA) and linthum niobate (LiNbO 3 ) samples by means of single beam femtosecond laser direct writing technique. We have printed double-layer 3D hologram,… read more here.

Keywords: femtosecond laser; dimensional hologram; hologram; three dimensional ... See more keywords

Doctors in Star Trek: The emergency medical hologram in Star Trek: Voyager.

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recommendations! Published in 2020 at "Early human development"

DOI: 10.1016/j.earlhumdev.2020.104993

Abstract: Doctors are important characters in Star Trek. After a disaster that strands the starship Voyager on the other side of the galaxy and kills all of the medical personnel, the ship is forced to rely… read more here.

Keywords: hologram; medical hologram; star trek; doctor ... See more keywords

Embedding intensity image into a binary hologram with strong noise resistant capability

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recommendations! Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2017.07.028

Abstract: Abstract A digital hologram can be employed as a host image for image watermarking applications to protect information security. Past research demonstrates that a gray level intensity image can be embedded into a binary Fresnel… read more here.

Keywords: image; image binary; hologram; intensity image ... See more keywords

Computer generated full-parallax synthetic hologram based on frequency mosaic

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recommendations! Published in 2019 at "Optics Communications"

DOI: 10.1016/j.optcom.2018.08.002

Abstract: Abstract In this study, we demonstrate a practical synthetic hologram with a size of 30 mm  ×  30 mm at resolution of 94340  ×  94340. The high-definition large-scale computer-generated full-parallax synthetic hologram is achieved through frequency mosaic… read more here.

Keywords: parallax synthetic; frequency; synthetic hologram; full parallax ... See more keywords

Single-random-phase holographic encryption of images

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recommendations! Published in 2017 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2016.01.017

Abstract: Abstract In this paper, a method is proposed for encrypting an optical image onto a phase-only hologram, utilizing a single random phase mask as the private encryption key. The encryption process can be divided into… read more here.

Keywords: phase; image; hologram; source image ... See more keywords

Photonic Encryption Platform via Dual-Band Vectorial Metaholograms in the Ultraviolet and Visible.

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recommendations! Published in 2022 at "ACS nano"

DOI: 10.1021/acsnano.1c10100

Abstract: Metasurface-driven optical encryption devices have attracted much attention. Here, we propose a dual-band vectorial metahologram in the visible and ultraviolet (UV) regimes for optical encryption. Nine polarization-encoded vectorial holograms are observed under UV laser illumination,… read more here.

Keywords: band; encryption; dual band; hologram ... See more keywords

Acoustic holograms in contactless ultrasonic power transfer systems: Modeling and experiment

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recommendations! Published in 2018 at "Journal of Applied Physics"

DOI: 10.1063/1.5048601

Abstract: Contactless ultrasonic acoustic energy transfer (UAET) is a new technology that eliminates risks or impracticalities associated with wired electrical connections or batteries that need to be replaced on a regular basis. This technology, which is… read more here.

Keywords: power transfer; hologram; power; physics ... See more keywords

H2HSR: Hologram-to-Hologram Super-Resolution With Deep Neural Network

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recommendations! Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3421349

Abstract: In holography, the resolution of the hologram significantly impacts both display size and angle-of-view, yet achieving high-resolution holograms presents formidable challenges, whether in capturing real-world holograms or in the computational demands of Computer-Generated Holography. To… read more here.

Keywords: h2hsr; hologram; hologram hologram; hologram super ... See more keywords

Multiplane Diffractive Acoustic Networks

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recommendations! Published in 2023 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2023.3255992

Abstract: Acoustic holograms are able to control pressure fields with high spatial resolution, enabling complex fields to be projected with minimal hardware. This capability has made holograms attractive tools for applications, including manipulation, fabrication, cellular assembly,… read more here.

Keywords: acoustic networks; control; hologram; multiplane diffractive ... See more keywords

Feasibility of Hologram-Assisted Bilateral Blood–Brain Barrier Opening in Non-Human Primates

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recommendations! Published in 2024 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2024.3451289

Abstract: Focused ultrasound (FUS) and microbubbles facilitate blood-brain barrier opening (BBBO) noninvasively, transiently, and safely for targeted drug delivery. Unlike state-of-the-art approaches, in this study, we demonstrate for the first time the simultaneous, bilateral BBBO in… read more here.

Keywords: barrier opening; bbbo; hologram; brain barrier ... See more keywords

Motion Hologram: Jointly optimized hologram generation and motion planning for photorealistic 3D displays via reinforcement learning

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recommendations! Published in 2025 at "Science Advances"

DOI: 10.1126/sciadv.ads9876

Abstract: Holography is capable of rendering three-dimensional scenes with full-depth control and delivering transformative experiences across numerous domains, including virtual and augmented reality, education, and communication. However, traditional holography presents 3D scenes with unnatural defocus and… read more here.

Keywords: motion hologram; hologram; jointly optimized; reinforcement learning ... See more keywords