Results 101 to 110 of about 8,441 (216)

Pupil Plane Multiplexing for Vectorial Fourier Ptychography

Laser &Photonics Reviews, EarlyView.
This study proposes a cost‐effective, modality‐adaptive multichannel microscopy framework using pupil‐plane multiplexing. A custom pupil aperture at the Fourier plane encodes channel‐specific transfer functions with spectral or polarization filters, and model‐based reconstruction with channel‐dependent priors decodes them.
Hyesuk Chae, Kyungwon Lee, Yong Guk Kang, Hansol Yoon, Kyung Chul Lee, Seung Ah Lee   +5 more
wiley   +1 more source

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

Displaying real 3-D object images using a computer-generated hologram : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Computer Science at Massey University [PDF]

, 1998
The magic of an optical hologram that produced by optical system offer us a never ending sense of wonderment. The images reconstructed from an optical hologram exhibit all of the three dimensional properties with full, rich perspective effects, enabling ...
Yuan, Jingzhou
core  

Metasurface Optics for Full-color Computational Imaging

, 2018
Conventional imaging systems comprise large and expensive optical components which successively mitigate aberrations. Metasurface optics offers a route to miniaturize imaging systems by replacing bulky components with flat and compact implementations ...
Colburn, Shane, Majumdar, Arka, Zhan, Alan   +2 more
core   +1 more source

Hydroxyl‐Terminated Polybutadiene‐Based Molding Powders as an Alternative Route for Manufacturing Pressed Polymer‐Bonded Explosives

Propellants, Explosives, Pyrotechnics, EarlyView.
This study presents an alternative method to manufacture polymer‐bonded explosives by partially curing an HTPB‐based molding powder prior to compaction. The study shows that the length of partial cure time before compaction directly influenced the geometric fidelity, homogeneity, compressive strength, density, and internal microstructure.
Ismar L. Chew, Cole Stephens, Ellen Ma, Julio Hernandez, Monique S. McClain   +4 more
wiley   +1 more source

Phase and amplitude simultaneously coding metasurface with multi-frequency and multifunctional electromagnetic modulations

Scientific Reports
The integration of multiple functionalities into a single, planar, ultra-compact metasurface has presented significant opportunities for enhancing capacity and performance within compact 5G/6G communication systems.
Chengxin Cai, Yinfei Li, Mingxing Li, Yao Qin, Yangyang Zhou   +4 more
doaj   +1 more source

Critical point drying of brain tissue for X‐ray phase‐contrast imaging

Journal of Synchrotron Radiation, EarlyView.
X‐ray phase contrast tomography can efficiently image brain tissue at subcellular resolution. Critical point drying allows a gentle replacement of interstitial material by air, enhancing X‐ray phase contrast of the ultrastructural features.X‐ray phase‐contrast tomography can efficiently image brain tissue at subcellular resolution.
Safe Khan, Jonas Albers, Artem Vorobyev, Yuxin Zhang, Jakob Reichmann, Angelika Svetlove, Fabio De Marco, Ksenia Denisova, Yikai Yang, Florent Seichepine, James O. Douglas, Elizabeth Duke, Peter Cloetens, Alexandra Pacureanu, Andreas T. Schaefer, Carles Bosch   +15 more
wiley   +1 more source

Wavefront Reconstruction from Noisy Fringe Observations via Sparse Coding [PDF]

, 2014
In this paper, we use sparse modeling for processing phase-shifting interferometry measurements. The proposed approach takes into full consideration the Poissonian (photon counting) measurements. In this way we are targeting at optimal sparse reconstruction both phase and magnitude taking into consideration all details of the observation formation ...
Vladimir Katkovnik, José Bioucas-Dias, Hongxing Hao   +2 more
openaire   +1 more source

On the optimization of the geometric pattern for structured illumination based X‐ray phase contrast and dark‐field imaging: a simulation study and its experimental validation

Journal of Synchrotron Radiation, EarlyView.
Single‐mask phase contrast and dark‐field imaging methods offer the great advantage of being simple to implement, translating most of the complexity to the numerical side. In this work, we study the impact of the modulation topology on the image quality retrieved both on numerical simulation and experiments.Phase contrast and dark‐field imaging are ...
Clara Magnin, Laurene Quénot, Dan Mihai Cenda, Blandine Lantz, Bertrand Faure, Emmanuel Brun   +5 more
wiley   +1 more source

Achiral light-controlled coding metasurfaces with multi-channel electromagnetic control

Light: Advanced Manufacturing
Programmable digital coding metasurfaces (PDCMs) can manipulate electromagnetic waves with high degrees of freedom, significantly enriching metasurface designs.
Yuxi Li, Ruichao Zhu, Sai Sui, Yajuan Han, Aixia Wang, Yuxiang Jia, Shaojie Wang, Cunqian Feng, Shaobo Qu, Jiafu Wang   +9 more
doaj   +1 more source