Results 131 to 140 of about 31,465 (210)

Learning Adaptive Filtering in the Fourier Domain for Fringe Pattern Analysis: A New Reconstruction Paradigm in Digital Holographic Interferometry

open access: yesNanophotonics, Volume 15, Issue 20, 27 October 2026.
The object beam and the reference beam interfere at the camera sensor surface and multi‐angle tomographic recording based on off‐axis digital holography. ABSTRACT Single‐frame fringe pattern analysis in digital holographic interferometry (DHI) is essential for precision phase measurement under dynamic conditions. Recent advances in deep learning within
Youxing Li   +6 more
wiley   +1 more source

Using a Dual‐wavelength Source for Depth Resolution Enhancement in Optical Scanning Holography

open access: yes, 2011
We use a wavelength selectable source to demonstrate depth resolution enhancement in an optical scanning holography system. Sectional objects separated by 2.5μm in the axial direction are reconstructed with a Fourier‐domain conjugate gradient ...
Edmund Y. Lam, Ke, J, Lam, EYM, Jun Ke
core   +1 more source

Twisted holography

open access: yesJournal of High Energy Physics
A bstract We derive and test a novel holographic duality in the B-model topological string theory. The duality relates the B-model on certain Calabi-Yau three-folds to two-dimensional chiral algebras defined as gauged βγ
Kevin Costello, Davide Gaiotto
openaire   +3 more sources

Interferometric Near‐Field Scanning Optical Microscopy via Phase Conjugation of a Multimode Fiber Probe

open access: yesNanophotonics, Volume 15, Issue 20, 27 October 2026.
A multimode fiber probe collects far more of the near field than a single‐mode one, but scrambles the phase into speckle. Phase conjugation on a spatial light modulator restores the wavefront, concentrating the signal up to 165‐fold at a single detector pixel and recovering the full phase of propagating surface plasmon polaritons where conventional ...
Juntaek Oh   +4 more
wiley   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

open access: yesAdvanced Engineering Materials, Volume 28, Issue 20, 21 October 2026.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ   +19 more
wiley   +1 more source

Toward a consistent definition of holographic entanglement entropy in de Sitter space

open access: yesJournal of High Energy Physics
We investigate a new definition of holographic entanglement entropy in the framework of static patch holography for de Sitter space. Using the replica trick and twist operator formalism, we derive an entropy functional in dS3 expressed through de Sitter ...
Shan-Ming Ruan, Yu-ki Suzuki
doaj   +1 more source

Measurements of the Size and Physical Properties of Marine Particles Using Atomic Force Microscopy: Implications for Marine Biogeochemical Cycles

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Particle size and physical properties such as stiffness and adhesiveness affect sinking velocity and flux in the ocean, yet conventional two‐dimensional measurements lack accuracy and mechanical information. In this study, we applied atomic force microscopy (AFM) to quantify three‐dimensional size and physical properties of marine particles ...
Y. Yamada   +4 more
wiley   +1 more source

Multi-lambda digital holography with auto calibration of temporal phase-shifts and synthetic wavelengths

open access: yes, 2009
Art. DWD6A fast auto calibration method for (lensless) multi-wavelength digital holography with arbitrary temporal phase-shifts is presented. The calibration algorithm is simple to calculate and needs just one additional image acquisition per ...
Fratz, M.   +9 more
core   +1 more source

Programmable Multidimensional Diffraction Engineering via an Optically Addressed Nested Fourier Metasurface

open access: yesNanophotonics, Volume 15, Issue 19, 13 October 2026.
An optically addressed nested Fourier metasurface is presented for programmable multidimensional diffraction routing without electrical interconnects. Local Fourier‐mode engineering combined with global superlattice diffraction enables on‐demand reconfigurable routing.
Jing Guo   +11 more
wiley   +1 more source

Extended depth of field with absolute position detection in multi-wavelength digital holography

open access: yes, 2022
We present a novel approach for detecting the absolute position of surfaces in multi-wavelength holography. We extent the depth of field from ~0.08 mm to ~3 mm and get the absolute position with accuracies better than 10 ...
Carl, Daniel   +4 more
core  

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