Results 41 to 50 of about 858,901 (185)

Preprocessing methods for quantitative phase image stitching

open access: yesBiomedical Optics Express, 2021
Quantitative phase imaging of cell cultures and histopathological slides often requires measurements in large fields of view which is realized through the stitching of multiple high resolution phase maps. Due to the characteristic properties of phase images, careful preprocessing is crucial for maintaining the metrological value of the stitched phase ...
Piotr Stȩpień   +2 more
openaire   +2 more sources

Interferometric time-stretch microscopy for ultrafast quantitative cellular and tissue imaging at 1 μm [PDF]

open access: yes, 2014
Quantitative phase imaging (QPI) has been proven to be a powerful tool for label-free characterization of biological specimens. However, the imaging speed, largely limited by the image sensor technology, impedes its utility in applications where high ...
CHAN, ACS   +9 more
core   +1 more source

Simultaneous off-axis multiplexed holography and regular fluorescence microscopy of biological cells

open access: yes, 2018
We present a new technique for obtaining simultaneous multimodal quantitative phase and fluorescence microscopy of biological cells, providing both quantitative phase imaging and molecular specificity using a single camera.
Barnea, Itay   +3 more
core   +1 more source

A 4-D dataset for validation of crystal growth in a complex three-phase material, ice cream [PDF]

open access: yes, 2015
Four dimensional (4D, or 3D plus time) X-ray tomographic imaging of phase changes in materials is quickly becoming an accepted tool for quantifying the development of microstructures to both inform and validate models.
Clarke C   +12 more
core   +1 more source

Multispectral Quantitative Phase Imaging Using a Diffractive Optical Network

open access: yesAdvanced Intelligent Systems, 2023
As a label‐free imaging technique, quantitative phase imaging (QPI) provides optical path length information of transparent specimens for various applications in biology, materials science, and engineering.
Che-Yung Shen   +3 more
doaj   +1 more source

Quantitative phase contrast imaging with a nonlocal angle-selective metasurface

open access: yesNature Communications, 2022
The authors present an approach to phase imaging by using the non-local optical response of a guided-moderesonator metasurface. They demonstrate that this metasurface can be added to a conventional microscope to enable quantitative phase contrast imaging.
Anqi Ji   +10 more
doaj   +1 more source

Local Optimization of Wave-fronts for high sensitivity PHase Imaging (LowPhi)

open access: yes, 2019
Phase microscopy is an invaluable tool in the biosciences and in clinical diagnostics. The sensitivity of current phase microscopy techniques is optimized for one specific mean phase value and varies significantly across a given sample.
Gigan, Sylvain   +2 more
core   +3 more sources

Time-resolved quantitative multiphase interferometric imaging of a highly focused ultrasound pulse [PDF]

open access: yes, 2010
Interferometric imaging is a well established method to image phase objects by mixing the image wavefront with a reference one on a CCD camera. It has also been applied to fast transient phenomena, mostly through the analysis of single interferograms. It
Abraham   +18 more
core   +3 more sources

Deep Phase Shifter for Quantitative Phase Imaging

open access: yes, 2020
A single intensity-only holographic interferogram can records the full amplitude and phase information of optical field. However, current digital holography technologies cannot recover the lossless phase information from a single interferogram. In this paper, we provide an entirely new approach for the full-field quantitative phase imaging technology ...
Zhang, Qinnan   +7 more
openaire   +2 more sources

Suppression of Octahedral Tilts and Associated Changes of Electronic Properties at Epitaxial Oxide Heterostructure Interfaces [PDF]

open access: yes, 2010
Epitaxial oxide interfaces with broken translational symmetry have emerged as a central paradigm behind the novel behaviors of oxide superlattices. Here, we use scanning transmission electron microscopy to demonstrate a direct, quantitative unit-cell-by ...
Borisevich, A.   +12 more
core   +5 more sources

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