Results 31 to 40 of about 101,447 (298)

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

Ghost Images in Helioseismic Holography? Toy Models in a Uniform Medium [PDF]

open access: yes, 2018
Helioseismic holography is a powerful technique used to probe the solar interior based on estimations of the 3D wavefield. Porter--Bojarski holography, which is a well-established method used in acoustics to recover sources and scatterers in 3D, is also ...
Yang, Dan
core   +2 more sources

Roadmap on holography

open access: yesJournal of Optics, 2020
From its inception holography has proven an extremely productive and attractive area of research. While specific technical applications give rise to 'hot topics', and three-dimensional (3D) visualisation comes in and out of fashion, the core principals involved continue to lead to exciting innovations in a wide range of areas.
Vera Marinova   +57 more
openaire   +5 more sources

RUDIMENTS OF HOLOGRAPHY [PDF]

open access: yesInternational Journal of Modern Physics D, 2003
An elementary introduction to Maldacena's AdS/CFT correspondence is given, with some emphasis in the Fefferman–Graham construction. This is based on lectures given by one of us (E.A.) at the Universidad Autonoma de Madrid.
Enrique Alvarez   +2 more
openaire   +4 more sources

Polarization fields in GaN/AlN nanowire heterostructures studied by Off axis holography [PDF]

open access: yes, 2013
In this work, we present an off-axis holography study of GaN/AlN heterostructured nanowires grown by plasma-assisted molecular-beam epitaxy. We discuss the sample preparation of nanowire samples for electron holography and combine potential profiles ...
Hertog, Martien Den   +2 more
core   +4 more sources

Synthesis and characterization of ZnO thin film by low cost modified SILAR technique

open access: yesAIMS Materials Science, 2016
The ZnO thin film is prepared on Fluorine Tin Oxide (FTO) coated glass substrate by using SILAR deposition technique containing ZnSO4.7H2O and NaOH as precursor solution with 150 deeping cycles at 70 °C temperature.
Haridas D. Dhaygude   +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

Optimally tuned deposition of 3D interconnected ultrathin cobalt oxide nanoflakes on Ni-foam by electrodeposition technique for targeted supercapacitor application

open access: yesResults in Chemistry, 2022
In this work, the 3D interconnected cobalt oxide nanoflakes (CON) were grown successfully on nickel foam (NF) at ambient conditions by the electrodeposition method, further followed by calcination.
Teja M. Patil   +7 more
doaj   +1 more source

Holographic Protection of Chronology in Universes of the Godel Type [PDF]

open access: yes, 2002
We analyze the structure of supersymmetric Godel-like cosmological solutions of string theory. Just as the original four-dimensional Godel universe, these solutions represent rotating, topologically trivial cosmologies with a homogeneous metric and ...
A. A. Tseytlin   +30 more
core   +2 more sources

Color Holography for the Documentation and Dissemination of Cultural Heritage: OptoClonesTM from Four Museums in Two Countries

open access: yesJournal of Imaging, 2019
True-color holograms, as they are the most advanced and realistic three-dimensional images obtainable with current technologies, can become valuable tools for the preservation, documentation and diffusion of cultural heritage.
Andreas Sarakinos, Alkis Lembessis
doaj   +1 more source

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