Results 41 to 50 of about 5,099,090 (216)

Scaling of Three-Dimensional Computer-Generated Holograms with Layer-Based Shifted Fresnel Diffraction

Applied Sciences, 2019
Holographic three-dimensional (3D) displays can reconstruct a whole wavefront of a 3D scene and provide rich depth information for the human eyes. Computer-generated holographic techniques offer an efficient way for reconstructing holograms without ...
Hao Zhang, Liangcai Cao, Guofan Jin
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Partial Monte Carlo sampling for computer generated holograms

Engineering Reports
CGH is considered as the key technology to integrate synthetic 3D imaging to get best photo‐realistic rendering quality and optimum viewing experience.
Alfonso Blesa, Juan Antonio Magallón, Francisco José Serón   +2 more
doaj   +1 more source

Pointlike Material Accumulation and Displacement in Azopolymer Thin Films Driven by Spatial Light Modulation

Advanced Optical Materials, EarlyView.
A maskless, SLM‐driven approach enables the deterministic inscription of arbitrary topographical features in azopolymer films by mapping complex vectorial light fields onto local viscoplastic stress. This platform allows for the rapid generation and dynamic erasure of high‐aspect‐ratio micro‐spikes, offering a versatile tool for reconfigurable flat ...
Jonas Strobelt, Nikolai Liubimtsev, Marina Saphiannikova, Svetlana Santer   +3 more
wiley   +1 more source

Correction:Femtosecond laser ablation of transparent microphotonic devices and computer-generated holograms [PDF]

, 2017
Correction for 'Femtosecond laser ablation of transparent microphotonic devices and computer-generated holograms' by Tawfiq Alqurashi, et al., Nanoscale, 2017, 9, 13808-13819.
Penchev, Pavel, Alqurashi, Tawfiq, Pavel Penchev, Dimov, Stefan, Dimov, Stefan; id_orcid, Yetisen, Ali K, Butt, Haider, Ali K. Yetisen, Montelongo, Yunuen, Yunuen Montelongo, Tawfiq Alqurashi, Stefan Dimov, Haider Butt   +12 more
core   +1 more source

Interpolation-Filtering Method for Image Improvement in Digital Holography

Applied Sciences
Digital holography is actively used for the characterization of objects and 3D-scenes, tracking changes in medium parameters, 3D shape reconstruction, detection of micro-object positions, etc.
Alexander V. Kozlov, Pavel A. Cheremkhin, Andrey S. Svistunov, Vladislav G. Rodin, Rostislav S. Starikov, Nikolay N. Evtikhiev   +5 more
doaj   +1 more source

Electrochemistry‐Enabled Optical and Plasmonic Programmable Metasurfaces

Advanced Optical Materials, EarlyView.
Electrochemistry is emerging as a promising approach for engineering optical and plasmonic metasurfaces, from the fabrication of nanoscale structures to their dynamic control. This Perspective reviews electrochemical strategies for creating and tuning metasurfaces, examines current challenges and opportunities, and discusses how integration with ...
Charlène Brissaud, Leonardo Scarabelli
wiley   +1 more source

Triplicator phase-only hologram and its use as a snapshot optical convolver and correlator

Journal of the European Optical Society-Rapid Publications
In this work we extend the optimum phase triplicator diffraction grating profile to a phase-only hologram. This modified hologram generates three equally-energetic orders with the highest diffraction efficiency, yielding a direct version and an inverted ...
Gao Shang, Sánchez-López María del Mar, García-Martínez Pascuala, Moreno Ignacio   +3 more
doaj   +1 more source

Proximal Algorithms for Discrete-Level Phase-Shifting Mask Design with Application to Optogenetics

Photonics, 2021
This work studies the problem of designing computer-generated holograms using phase-shifting masks limited to represent only a small number of discrete phase levels. This problem has various applications, notably in the emerging field of optogenetics and
Dimitris Ampeliotis, Aggeliki Anastasiou, Christina (Tanya) Politi, Dimitris Alexandropoulos   +3 more
doaj   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source