Results 41 to 50 of about 16,591 (234)

Wavefront division digital holographic microscopy

open access: yesBiomedical Optics Express, 2018
Digital holographic microscopy is the state of the art quantitative phase imaging of micro-objects including living cells. It is an ideal tool to image and quantify cell thickness profiles with nanometer thickness resolution. Digital holographic techniques usually are implemented using a two-beam setup that may be bulky and may not be field portable ...
Nimit Patel   +7 more
openaire   +3 more sources

Characterizing and tracking single colloidal particles with video holographic microscopy

open access: yes, 2007
We use digital holographic microscopy and Mie scattering theory to simultaneously characterize and track individual colloidal particles. Each holographic snapshot provides enough information to measure a colloidal sphere's radius and refractive index to ...
Grier, David G.   +7 more
core   +1 more source

Single-shot digital holographic microscopy based on computational telecentricity using a single-arm off-axis interferometer

open access: yesICT Express, 2018
We propose a single-shot digital holographic microscopy based on computational telecentricity with a single-arm off-axis interferometer (SA-OAI), which is composed of optical recording, computational compensation and retrieving processes.
Seong-Jin Park   +2 more
doaj   +1 more source

Automatic cross filtering for off-axis digital holographic microscopy

open access: yesResults in Physics, 2020
Off-axis digital holographic microscopy (DHM) is a significant quantitative phase imaging (QPI) modality in a single shot. However, the reconstructed quality of the image in the off-axis DHM is governed by the spatial filtering in the spectral domain of ...
Zhi Zhong   +6 more
doaj   +1 more source

Automatic Spatial Filtering by Combining Wavelet-Transform Modal Maxima and Mathematical Morphology in Digital Holographic Microscopy

open access: yesPhotonics, 2023
Digital holographic microscopy has significant advantages over traditional 3D measurements. In order to obtain a reconstructed image of superior quality, the zero-order-term spectrum and the −1 term spectrum must be eliminated during the digital ...
Hu Xiong, Dawei Zhang
doaj   +1 more source

Imaging Gold Nanoparticles in Living Cells Environments using Heterodyne Digital Holographic Microscopy

open access: yes, 2009
This paper describes an imaging microscopic technique based on heterodyne digital holography where subwavelength-sized gold colloids can be imaged in cell environment.
Absil   +34 more
core   +1 more source

Multicascade-linked synthetic wavelength digital holography using an optical-comb-referenced frequency synthesizer [PDF]

open access: yes, 2018
Digital holography (DH) is a promising method for non-contact surface topography because the reconstructed phase image can visualize the nanometer unevenness in a sample.
ABRAHAM, Emmanuel   +14 more
core   +2 more sources

Imaging in digital holographic microscopy

open access: yesOptics Express, 2007
We present a theoretical formalism for three dimensional (3D) imaging properties of digital holographic microscopy (DHM). Through frequency analysis and visualization of its 3D optical transfer function, an assessment of the imaging behavior of DHM is given. The results are compared with those from other types of interference microscopy.
Shan S, Kou, Colin J, Sheppard
openaire   +2 more sources

Opposite-view digital holographic microscopy with autofocusing capability

open access: yesScientific Reports, 2017
Digital holographic microscopy (DHM) has its intrinsic ability to refocusing a sample by numerically propagating an object wave from its hologram plane to its image plane.
Juanjuan Zheng, Peng Gao, Xiaopeng Shao
doaj   +1 more source

Early cell death detection with digital holographic microscopy.

open access: yesPLoS ONE, 2012
BackgroundDigital holography provides a non-invasive measurement of the quantitative phase shifts induced by cells in culture, which can be related to cell volume changes.
Nicolas Pavillon   +6 more
doaj   +1 more source

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