Results 71 to 80 of about 38,080 (271)

Holographic Whole‐Object Photopolymerization Preserving Director Alignment in Liquid Crystalline Actuators

open access: yesAdvanced Materials, EarlyView.
Holographic microlithography enables the fabrication of fully connected 3D liquid crystalline structures in a single exposure. The process maintains precise control over the director orientation within the entire object, preventing local director distortions typically observed in sequential printing.
Lovish Gulati   +8 more
wiley   +1 more source

Verification of the accommodative responses in viewing an on-axis analog reflection hologram

open access: yesOpen Physics, 2021
Vergence and accommodation responses of human vision are very important factors when a 3D image is observed, and a vergence-accommodation conflict (VAC) causes perceptual distortion, visual discomfort, and fatigue for an observer.
Lee Seunghyun   +4 more
doaj   +1 more source

Recent Advances on Thermochromic Inks for Security Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira   +5 more
wiley   +1 more source

3D visualization through the Hologram for the Learning of Area and Volume Concepts

open access: yesMathematics, 2019
This study aims to implement and evaluate a methodological proposal using the hologram as a teaching medium for the learning of concepts related to areas and volumes of geometrical bodies.
Lara Orcos   +2 more
doaj   +1 more source

Case‐specific three‐dimensional hologram with a mixed reality technique for tumor resection in otolaryngology

open access: yesLaryngoscope Investigative Otolaryngology, 2021
Objective We report our first experience of using a case‐specific three‐dimensional (3D) hologram for tumor resection in otolaryngology to show the proof of concept.
Sohei Mitani   +8 more
doaj   +1 more source

Analysis and interpretation of the Seidel aberration coefficients in digital holography [PDF]

open access: yes, 2011
Peer reviewedPublisher ...
Champagne   +10 more
core   +1 more source

Use of Computer-Generated Holograms in Security Hologram Applications [PDF]

open access: yesLatvian Journal of Physics and Technical Sciences, 2016
Abstract The article discusses the use of computer-generated holograms (CGHs) for the application as one of the security features in the relief-phase protective holograms. An improved method of calculating CGHs is presented, based on ray-tracing approach in the case of interference of parallel rays.
Bulanovs, A.   +2 more
openaire   +2 more sources

Programmable Dimensional Lithography with Digital Micromirror Devices for Multifunctional Microarchitectures

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee   +5 more
wiley   +1 more source

Holo-U2Net for High-Fidelity 3D Hologram Generation

open access: yesSensors
Traditional methods of hologram generation, such as point-, polygon-, and layer-based physical simulation approaches, suffer from substantial computational overhead and generate low-fidelity holograms.
Tian Yang, Zixiang Lu
doaj   +1 more source

Design and Fabrication of a Holographic Radial Polarization Converter

open access: yesPhotonics, 2020
Radial polarization converters can convert an incident light into a radially polarized light, which is beneficial in a variety of applications. In this paper, a new design of holographic radial polarization converter is proposed which consists of eight ...
Jing-Heng Chen   +6 more
doaj   +1 more source

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