Results 41 to 50 of about 8,027 (185)

Measurements of the Characteristics of Transparent Material Using Digital Holography

Advances in Materials Science and Engineering, 2013
Digital holography is applied to measure the characteristics of transparent material. A digital hologram recording system to measure the surface of transparent material was established, and the digital holograms of transparent object were obtained in ...
Ding Yu, Shang Wenbin, Yang Hong, Yang Yan   +3 more
doaj   +1 more source

Explicit Compression Degradation Estimations for Low‐Sampling Single‐Pixel Imaging using Hadamard Basis

Advanced Science, EarlyView.
This study proposes a degradation estimation technique to explicitly describe compressive sampling for low‐sampling Hadamard single‐pixel imaging. Blur kernels in explicit degradation models are estimated by the self‐supervised learning method without labeled data and implicit priors.
Haoyu Zhang, Jie Cao, Chang Zhou, Haifeng Yao, Qun Hao   +4 more
wiley   +1 more source

Portable Filter-Free Lens-Free Incoherent Digital Holography System

Photonics
A portable incoherent digital holography system without a polarization filter or a refractive lens was developed. Phase-shifted self-interference incoherent holograms of light diffracted from an object were generated without attenuation due to a ...
Tatsuki Tahara
doaj   +1 more source

Interpretable Deep Learning for Breast Cancer Cell Phenotyping Using Diffraction Images from Lens-Free Digital In-Line Holography [PDF]

, 2021
Tzu‐Hsi Song, Mengzhi Cao, Jouha Min, Hyungsoon Im, Hakho Lee, Kwonmoo Lee   +5 more
openalex   +1 more source

Multi‐Dimensional Acoustic Cascaded Holographic Encryption with Instantaneous Visual Decryption via Particle Manipulation

Advanced Science, EarlyView.
Acoustic holograms act as key tools for information encryption, yet current schemes limit encryption dimensionality/security and require time‐consuming decryption. A compact device integrates multi‐dimensional cascaded acoustic holography with particle manipulation, employs extra secret keys, enables rapid decryption, and is validated via 1D/2D/3D ...
Qin Lin, Feiyan Cai, Yunqing Liu, Zejiao Zhou, Jiayang Li, Rujun Zhang, Hongpeng Chen, Hairong Zheng, Huailing Zhang   +8 more
wiley   +1 more source

Providing a Visual Understanding of Holography Through Phase Space Representations

Applied Sciences, 2020
Digital holograms are a prime example for signals, which are best understood in phase space—the joint space of spatial coordinates and spatial frequencies. Many characteristics, as well as optical operations can be visualized therein with so called phase
Tobias Birnbaum, Tomasz Kozacki, Peter Schelkens   +2 more
doaj   +1 more source

High-speed full-color computer-generated holography using a digital micromirror device and fiber-coupled RGB laser diode [PDF]

, 2023
Shuhei Yoshida
openalex   +1 more source

Polarization‐Multiplexed Metalens Enables Switchable and Compact Chromatic Confocal Sensing with Dual‐Mode Precision Control

Advanced Science, EarlyView.
This work breaks conventional design paradigms by leveraging a polarization‐multiplexed metasurface to create the first chromatic confocal sensor with dynamically switchable measurement performance, achieving 10‐fold miniaturization (Ø1 mm vs cm‐scale conventional probes).
Zhicheng Zhao, Yuting Jiang, Tao Lai, Wenxiang Peng, Yueqiang Hu, Shanyong Chen   +5 more
wiley   +1 more source

Multifunctional Programmable Transmissive Metasurface with Phase and Amplitude Manipulation Capability

Advanced Science, EarlyView.
This work provides a multifunctional programmable transmissive metasurface with phase and amplitude manipulation capability in the sub‐6G band. By applying different coding strategies, the proposed metasurface can realize vortex beam generation, holographic imaging under phase coding mode, and multi‐beam forming in phase‐amplitude joint coding mode ...
Hao Tian Shi, Rui Yuan Wu, Shi He, Xue Yun Guo, Xiao Qing Chen, Yi Ning Zheng, Bing Bing Zhu, Lei Zhang, Tie Jun Cui   +8 more
wiley   +1 more source

Observation of Ultranarrow Band Red Photoluminescence from Pure Organic Self‐Assembled T2T Micro‐Rods: A Route to High‐Resolution Light Sources

Advanced Science, EarlyView.
π‐Conjugated T2T SAMRs display an ultranarrow red PL peak (FWHM = 3.2 nm at 625 nm). Crystalline J‐aggregated domains facilitate STEs that lead to photo‐brightening effect. During exposure, emission from the irradiation spot becomes sharper and more intensely red.
Dayeong Kwon, Sang‐hun Lee, Eunji Lee, Jaejin Hwang, Jaekwang Lee, Jeongyong Kim, Jinsoo Joo   +6 more
wiley   +1 more source