Results 121 to 130 of about 101,447 (298)

Feed particle size evaluation: conventional approach versus digital holography based image analysis

Italian Journal of Animal Science, 2010
The aim of this study was to evaluate the application of image analysis approach based on digital holography in defining particle size in comparison with the sieve shaker method (sieving method) as reference method.
Vittorio Dell’Orto, Alessandro Leone, Vincenzo Chiofalo, Alessandro Agazzi, Matteo Alaimo, Marco Alberto Carlo Potenza, Anna Campagnoli, Giovanni Savoini   +7 more
doaj   +1 more source

Near-Field Radio Holography of Large Reflector Antennas

, 2007
We summarise the mathematical foundation of the holographic method of measuring the reflector profile of an antenna or radio telescope. In particular, we treat the case, where the signal source is located at a finite distance from the antenna under test,
Baars, J. W. M., Lopez-Perez, J. A., Lucas, R., Mangum, J. G.   +3 more
core   +1 more source

Lifshitz holography [PDF]

Classical and Quantum Gravity, 2016
In this article we review recent progress on the holographic modelling of field theories with Lifshitz symmetry. We focus in particular on the holographic dictionary for Lifshitz backgrounds - the relationship between bulk fields and boundary operators, operator correlation functions and underlying geometrical structure.
openaire   +4 more sources

A Holographic Sensor‐Integrated Deep Learning Framework for Noninvasive Assessment of Stored Red Blood Cell Quality

Advanced Sensor Research, EarlyView.
A holographic sensing‐integrated deep learning platform enables real‐time, label‐free assessment of red blood cell (RBC) quality during storage. By combining diffusion model‐based data augmentation and self‐supervised pretraining, the framework achieves high segmentation accuracy with minimal data.
Seonghwan Park, Hyunbin An, Abdur Rehman, Inkyu Moon   +3 more
wiley   +1 more source

Reconstructing Focal Topological Curves through Vortex Spots from Multifocal Metasurfaces

Advanced Science, EarlyView.
Multichannel multifocal silicon metasurfaces are built to reconstruct focal topological curves using an array of vortex spots, and upconverted fluorescence is used to directly visualize the morphology of the near‐infrared focal fields. Abstract Structured light plays an important role in modern photonics.
Hongguang Dong, Raheel Ahmed Janjua, Zhipeng Hu, Yi Jin, Sailing He   +4 more
wiley   +1 more source

Measurement of cavitation in a sliding bearing using digital holography [PDF]

, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014), Arevalo, L, Coupland, J, Tang, T   +3 more
core  

Water‐Wave Pancharatnam‐Berry Phase Induced by 4D Spin‐Orbit State Evolution

Advanced Science, EarlyView.
The first observation of the Pancharatnam‐Berry (PB) phase in water waves is reported, revealing its extraordinary properties including unbounded phase values, spin‐momentum‐locked unidirectional channels, and a Poincaré hypersphere representation. These findings demonstrate the universality of the PB phase across different wave systems and in higher ...
Wanyue Xiao, Shiqi Jia, Tong Fu, Shubo Wang   +3 more
wiley   +1 more source

Limits of Elemental Contrast by Low Energy Electron Point Source Holography

, 2011
Motivated by the need for less destructive imaging of nanostructures, we pursue point-source in-line holography (also known as point projection microscopy, or PPM) with very low energy electrons (-100 eV).
Livadaru, Lucian, Mutus, Josh, Wolkow, Robert A.   +2 more
core   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

Wavelength-multiplexed orbital angular momentum meta-holography

PhotoniX
The field of high-bandwidth holography has been extensively studied over the past decade. Orbital angular momentum (OAM) holography, which utilizes vortex beams with theoretically unbounded OAM modes as information carriers, showcases the large ...
Jaehyuck Jang, Seong-Won Moon, Joohoon Kim, Jungho Mun, Stefan A. Maier, Haoran Ren, Junsuk Rho   +6 more
doaj   +1 more source