Results 11 to 20 of about 32,600 (191)

High-contrast, speckle-free, true 3D holography via binary CGH optimization

open access: yesScientific Reports, 2022
Holography is a promising approach to implement the three-dimensional (3D) projection beyond the present two-dimensional technology. True 3D holography requires abilities of arbitrary 3D volume projection with high-axial resolution and independent ...
Byounghyo Lee   +4 more
doaj   +1 more source

Surface-Plasmon Holography

open access: yesiScience, 2020
Summary: Holography was originally invented for the purpose of magnifying electron microscopic images without spherical aberration and has been applied to photography for recording and reconstructing three-dimensional objects.
Satoshi Kawata, Miyu Ozaki
doaj   +1 more source

UV-VIS Curable PEG Hydrogels for Biomedical Applications with Multifunctionality

open access: yesGels, 2022
Multifunctional biomedical materials capable of integrating optical functions are highly desirable for many applications, such as advanced intra-ocular lens (IOL) implants.
Tina Sabel-Grau   +3 more
doaj   +1 more source

Modelling and Design of Holographic Optical Elements for Beam-Coupling Applications for a Range of Incident Beam Angles

open access: yesPhotonics, 2022
Theoretical modelling has been used to calculate the holographic recording beam angles required in air (at any recording wavelength) to produce a Volume Holographic Optical Element (VHOE) for any defined input and output beam angles. The approach is used
Dipanjan Chakraborty   +6 more
doaj   +1 more source

Geometric and physical configurations of meta‐atoms for advanced metasurface holography

open access: yesInfoMat, 2021
Metasurfaces consisting of subwavelength structures, so‐called meta‐atoms, have steadily attracted considerable attention for advanced holography due to their advantages in terms of high‐resolution holographic images, large field of view, and compact ...
Joohoon Kim   +5 more
doaj   +1 more source

A Review of Holography in the Aquatic Sciences: In situ Characterization of Particles, Plankton, and Small Scale Biophysical Interactions

open access: yesFrontiers in Marine Science, 2021
The characterization of particle and plankton populations, as well as microscale biophysical interactions, is critical to several important research areas in oceanography and limnology. A growing number of aquatic researchers are turning to holography as
Aditya R. Nayak   +6 more
doaj   +1 more source

Krylov Complexity in Quantum Field Theory

open access: yesNuclear Physics B, 2023
In this paper, we study the Krylov complexity in quantum field theory and make a connection with the holographic “Complexity equals Volume” conjecture.
Kiran Adhikari   +2 more
doaj   +1 more source

Particle Size Measurement Using a Phase Retrieval Holography System with a GPU-Equipped SBC

open access: yesKONA Powder and Particle Journal, 2023
We have developed a phase retrieval holography system using a single-board computer (SBC) with a graphics processing unit (GPU) for particle size measurement.
Yohsuke Tanaka, Dai Nakai
doaj   +1 more source

Volume holographic interconnections with maximal capacity and minimal cross talk [PDF]

open access: yes, 1989
Optical interconnections utilizing volume holography are described. Intrinsic cross-talk effects that limit the number of independent interconnections are identified and analyzed by applying coupled-wave analysis.
Gu, Xiang-guang   +2 more
core   +1 more source

The Holography Hypothesis and Pre-Big Bang Cosmology [PDF]

open access: yes, 1998
The consequences of holography hypothesis are investigated for the Pre-big-bang string cosmological models. The evolution equations are obtained from the tree level string effective action. It is shown that $S/A$ is bounded by a constant in each case, $S$
A.K. Biswas   +3 more
core   +2 more sources

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