Results 61 to 70 of about 22,174 (256)

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

open access: yesAdvanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak   +4 more
wiley   +1 more source

AdS/QCD, Light-Front Holography, and the Nonperturbative Running Coupling

open access: yes, 2010
The combination of Anti-de Sitter space (AdS) methods with light-front (LF) holography provides a remarkably accurate first approximation for the spectra and wavefunctions of meson and baryon light-quark bound states.
Brodsky, Stanley J.   +2 more
core   +1 more source

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

open access: yesAdvanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee   +7 more
wiley   +1 more source

Ultrahigh-fidelity full-color holographic display via color-aware optimization

open access: yesPhotoniX
Holographic display offers the capability to generate high-quality images with a wide color gamut since it is laser-driven. However, many existing holographic display techniques fail to fully exploit this potential, primarily due to the system’s ...
Chun Chen   +5 more
doaj   +1 more source

Electronic Tabletop Holographic Display: Design, Implementation, and Evaluation

open access: yesApplied Sciences, 2019
Most of the previously-tried prototype systems of digital holographic display are of front viewing flat panel-type systems having narrow viewing angle, which do not meet expectations towards holographic displays having more volumetric and realistic 3 ...
Jinwoong Kim   +8 more
doaj   +1 more source

Unstable horizons and singularity development in holography

open access: yes, 2017
In holographic applications one can encounter scenarios where a long-wavelength instability can arise. In such situations, it is often the case that the dynamical end point of the instability is a new equilibrium phase with a nonlinear scalar hair ...
Bosch, Pablo, Buchel, Alex, Lehner, Luis
core   +1 more source

S-Wave Superconductivity in Anisotropic Holographic Insulators [PDF]

open access: yes, 2015
Within gauge/gravity duality, we consider finite density systems in a helical lattice dual to asymptotically anti-de Sitter space-times with Bianchi VII symmetry. These systems can become an anisotropic insulator in one direction while retaining metallic
Erdmenger, Johanna   +4 more
core   +4 more sources

Foveated holographic near-eye 3D display

open access: yesOptics Express, 2020
We present a foveated rendering method to accelerate the amplitude-only computer-generated hologram (AO-CGH) calculation in a holographic near-eye 3D display. For a given target image, we compute a high-resolution foveal region and a low-resolution peripheral region with dramatically reduced pixel numbers.
Chenliang Chang, Wei Cui, Liang Gao
openaire   +2 more sources

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

Study of Non-Periodic Pinhole Array Filter for Decreasing High-Order Noise for Compact Holographic Display

open access: yesApplied Sciences, 2020
The non-periodic pinhole array filtering of a spatial light modulator (SLM) is proposed for filtering the high-order noise and DC noise of a holographic display.
Yoo Kwang Kim, Won Jong Ryu, Jin Su Lee
doaj   +1 more source

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