Results 51 to 60 of about 3,360 (241)

Off-axis digital hologram reconstruction: some practical considerations

, 2011
International audienceHolographic rendering of off-axis intensity digital holograms is discussed. A review of some of the main numerical processing methods, based either on the Fourier transform interpretation of the propagation integral or on its linear
Verrier, Nicolas, Michael Atlan, Nicolas Verrier, Atlan, Michael   +3 more
core   +1 more source

Kilohertz dynamic Fourier filter for synthetic-aperture binary hologram reconstruction

, 2022
Art. 109440U, 8 S.Synthetic-aperture holography is a powerful tool for off-axis holographic imaging because it can fill the entire illumination aperture of the object under observation and provide super resolution.
Hartmann, Peter, Taudt, Christopher, Baselt, Tobias, Nelsen, Bryan, Kabardiadi-Virkovski, Alexander   +4 more
core   +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

A Programmable Multi‑Modal Information Encryption System Based on the Dynamic Wetting Behavior of Liquid Metal

Advanced Science, EarlyView.
This work presents a programmable multimodal information encryption device that harnesses the dynamic wetting behavior of liquid metal to achieve secure, reconfigurable, and high‐precision encryption and decryption of diverse data types, including text and images.
Xuedong Qiang, Min Mao, Yihao Wang, Nan Li, Mengyu Jiang, Chenkun Sun, Bangdeng Du, Jifei Ye, Linyan Wang, Fei Zhan, Lei Wang   +10 more
wiley   +1 more source

Super‐Resolution and High‐Data‐Density Acoustic Meta‐Hologram via Amplitude and Phase Coupling

Advanced Science, EarlyView.
A super‐resolution acoustic meta‐hologram utilizes amplitude‐phase coupling under energy conservation constraints to overcome the traditional diffraction limit. This conceptually advanced approach achieves high‐fidelity acoustic field reconstruction and dense information transmission, unlocking new potentials for high‐resolution acoustic imaging and ...
Xiao Guo, Xinzong Wang, Guoshen Tang, Haohan Zeng, Siqi Fan, Xinghao Hu, Youyu Mo, Zhenyu He, Tingting Li, Hui Xu, Jiao Shen, Haiyan Fan, Xiaoxiang Gao, Yifan Zhu, Hui Zhang, Badreddine Assouar   +15 more
wiley   +1 more source

Zero order synthetic hologram with a sinusoidal phase carrier for generation of multiple beams [PDF]

, 2009
We discuss a phase synthetic hologram, for encoding arbitrary complex fields, whose design is based on a sinusoidal phase grating with a spatially modulated phase depth.
VICTOR MANUEL ARRIZON PEÑA, MARIA GUADALUPE MENDEZ VAZQUEZ, ULISES RUIZ CORONA   +2 more
core  

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Real-time three-dimensional object reconstruction by use of a phase-encoded digital hologram [PDF]

, 2002
A three-dimensional (3D) object reconstruction technique that uses only phase information of a phase-shifting digital hologram and a phase-only spatial-light modulator is proposed.
Bertaux, Nicolas, Matoba, Osamu, Naughton, Thomas J., Frauel, Yann, Javidi, Bahram   +4 more
core   +1 more source

Machine Learning‐Assisted Design and Performance Prediction of a Compact Dual‐Band Polarization‐Insensitive THz Metamaterial Absorber for Skin‐Cancer‐Related Refractive‐Index Sensing

Advanced Electronic Materials, EarlyView.
A compact QASRR‐based THz metamaterial absorber enables polarization‐insensitive dual‐band absorption and skin‐cancer‐related refractive‐index sensing through measurable resonance shifts. Field, surface‐current, and circuit analyses clarify the dual‐resonance mechanism, while StackNet‐assisted prediction accurately estimates the simulated absorption ...
Md. Murad Kabir Nipun, S. M. Rifatur Rana, Md. Golam Morshed, Imrose Jahan, F. A. Sabbir Ahamed, Md. Jahedul Islam   +5 more
wiley   +1 more source

HoloGaussian Digital Twin: Reconstructing 3D Scenes with Gaussian Splatting for Tabletop Hologram Visualization of Real Environments

Remote Sensing
Several studies have explored the use of hologram technology in architecture and urban design, demonstrating its feasibility. Holograms can represent 3D spatial data and offer an immersive experience, potentially replacing traditional methods such as ...
Tam Le Phuc Do, Jinwon Choi, Viet Quoc Le, Philippe Gentet, Leehwan Hwang, Seunghyun Lee   +5 more
doaj   +1 more source