Results 111 to 120 of about 2,557,405 (292)

Reference-Free Single-Point Holographic Imaging and Realization of an Optical Bidirectional Transducer

open access: yes, 2018
One of the fundamental limitations in photonics is the lack of a bidirectional transducer that can convert optical information into electronic signals or vice versa.
Baek, YoonSeok   +3 more
core   +1 more source

Observations and Model Simulations of Phase Heterogeneity in Arctic Clouds

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 13, 16 July 2025.
Abstract Mixed‐phase clouds (MPCs) play a key role in Earth's radiation budget particularly in the Arctic where they are ubiquitous year‐round. An important characteristic of MPCs is how the cloud phases are mixed, which affects interactions between ice and liquid.
Stian Leer‐Salvesen Dammann   +3 more
wiley   +1 more source

Extending the Depth of Field beyond Geometrical Imaging Limitations Using Phase Noise as a Focus Measure in Multiwavelength Digital Holography

open access: yesApplied Sciences, 2018
Digital holography is a well-established technology for optical quality control in industrial applications. Two common challenges in digital holographic measurement tasks are the ambiguity at phase steps and the limited depth of focus.
Tobias Seyler   +5 more
doaj   +1 more source

Single-exposure full-field multi-depth imaging using low-coherence holographic multiplexing

open access: yes, 2018
We present a new interferometric imaging approach that allows for multiple-depth imaging in a single acquisition, using off-axis low-coherence holographic multiplexing. This technique enables sectioned imaging of multiple slices within a thick sample, in
Shaked, Natan T.   +2 more
core   +1 more source

Reconstructing Three‐Dimensional Optical Anisotropy with Tomographic Müller‐Polarimetric Microscopy

open access: yesAdvanced Science, Volume 12, Issue 27, July 17, 2025.
Tomographic Müller polarimetric microscopy is a novel imaging technique that resolves 3D birefringent properties of bulky samples, unveiling hierarchical nanostructures at microscopic resolution. Based on incoherent visible‐light polarimetry, it achieves experimental simplicity by eliminating phase measurements.
Yang Chen   +4 more
wiley   +1 more source

Digital Holography for MEMS Application [PDF]

open access: yesAdvances in Imaging, 2009
Studies on digital holographic microscopy for full field high resolution 3-D profiling of MEMS and micro-devices are presented. Applications for thin film thickness measurement and studies on a MEMS accelerometer are presented.
Anand, Asundi, Singh, Vijay Raj
openaire   +3 more sources

Speckle Reduction in Digital Holography by Fast Logistic Adaptive Non-Local Means Filtering

open access: yesPhotonics
Digital holography is a promising imaging technology. However, there is speckle noise in the reconstructed image of a digital hologram. Speckle degrades the quality of the reconstructed image.
Yiping Fu, Junmin Leng, Zhenqi Xu
doaj   +1 more source

Achromatic 3D Multi‐Color Orbital Angular Momentum Holography

open access: yesAdvanced Science, Volume 12, Issue 26, July 10, 2025.
This work presents an achromatic 3D multicolor orbital angular momentum (OAM) holography based on spatial multiplexing. By integrating wavelength‐specific lens functions onto monochromatic Fourier OAM‐dependent holograms and high‐resolution spatial discretization and interleaving via two‐photon lithography (TPL), the approach addresses axial chromatic ...
Hang Su   +5 more
wiley   +1 more source

Depth-filtered digital holography

open access: yesOptics Express, 2012
We introduce depth-filtered digital holography (DFDH) as a method for quantitative tomographic phase imaging of buried layers in multilayer samples. The procedure is based on the acquisition of multiple holograms for different wavelengths. Analyzing the intensity over wavelength pixel wise and using an inverse Fourier transform leads to a depth-profile
Martin R. Hofmann   +7 more
openaire   +3 more sources

Dissecting Morphological and Functional Dynamics of Non‐Tumorigenic and Triple‐Negative Breast Cancer Cell Lines Using PCA and t‐SNE Analysis

open access: yesCancer Reports, Volume 8, Issue 7, July 2025.
ABSTRACT Background Triple‐negative breast cancer (TNBC) poses significant challenges due to its aggressive nature and lack of targeted therapies. Understanding the cellular behaviors of TNBC is crucial for developing effective treatments. Aims This study aims to compare the morphological characteristics of non‐tumorigenic MCF10A and aggressive MDA‐MB ...
Yazan A. Almahdi   +3 more
wiley   +1 more source

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