Results 31 to 40 of about 701 (192)

Visualization_3(refocusing_NHLFH_chessboard).mp4

open access: yes, 2020
Numerical propagation results of the 25Kx17K resolution hologram of the chessboard object to different depths.
Jae-Hyeung Park (3971228)
core   +1 more source

Visualization_1(rofocusing_HS_usaf).mp4

open access: yes, 2020
Numerical propagation results of the 25Kx25K resolution hologram of 4x4 resolution target objects to different depths.
Jae-Hyeung Park (3971228)
core   +1 more source

Visualization_2(refocusing_NHLFH_usaf).mp4

open access: yes, 2020
Numerical propagation results of the 25Kx25K resolution hologram of 4x4 resolution target objects to different depths.
Jae-Hyeung Park (3971228)
core   +1 more source

Visualization_4(parallax_NHLFH_chessboard).mp4

open access: yes, 2020
Reconstructions of the 25Kx17K resolution hologram of the chessboard object observed at different virtual camera position.
Jae-Hyeung Park (3971228)
core   +1 more source

Sparse reconstruction for integral Fourier holography using dictionary learning method

open access: yes, 2022
A simplified (i.e., single shot) method is demonstrated to generate a Fourier hologram from multiple two-dimensional (2D) perspective images (PIs) under low light level imaging conditions.
Chinnadurai, Sunil   +6 more
core   +1 more source

Millimeter-Wave Holographic Metasurface Leaky-Wave Multi-Beam Antennas with Gain and Polarization Control

open access: yes, 2023
This paper introduces a holographic multiple-beam leaky-wave antenna (LWA) synthesized by metasurfaces with controllable polarization and amplitude of the radiated beams.
Ivashina, Marianna   +7 more
core   +1 more source

Novel Non‐Cytotoxic Acylphosphinates and Acylphosphine Oxides Photoinitiators

open access: yesAngewandte Chemie, EarlyView.
Novel acylphosphine oxide (APO) and acylphosphinate photoinitiators based on DPO and DOPO were designed to investigate structure–property relationships including photochemical performance, polymerization efficiency and cytotoxicity. While DPO derivatives showed excellent reactivity, DOPO‐based systems also displayed good efficiency and significantly ...
Jiansong Yin   +13 more
wiley   +2 more sources

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

open access: yesAdvanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg   +5 more
wiley   +1 more source

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

Computer-generated holograms of three-dimensional objects synthesized from their multiple angular viewpoints [PDF]

open access: yesJournal of the Optical Society of America A, 2003
Synthesizing computer-generated holograms (CGHs) of a general three-dimensional (3D) object is usually a heavy computational task. We propose and demonstrate a new algorithm for computing CGHs of 3D objects. In our scheme, many different angular projections of computer-designed 3D objects are numerically processed to yield a single two-dimensional ...
David, Abookasis, Joseph, Rosen
openaire   +2 more sources

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