Results 21 to 30 of about 72,954 (249)
Roadmap on Digital Holography-Based Quantitative Phase Imaging
Journal of Imaging, 2021 Quantitative Phase Imaging (QPI) provides unique means for the imaging of biological or technical microstructures, merging beneficial features identified with microscopy, interferometry, holography, and numerical computations.
Vinoth Balasubramani +16 more
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Blind digital holographic microscopy [PDF]
SPIE Proceedings, 2017 A blind variant of digital holographic microscopy is presented that removes the requirement for a well-characterized, highly divergent reference beam. This is achieved by adopting an off-axis recording geometry where a sequence of holograms is recorded as the reference is tilted, and an iterative algorithm that estimates the amplitudes and phases of ...
Anderson, Patrick N. +9 more
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Advantages of Fresnel biprism-based digital holographic microscopy in quantitative phase imaging. [PDF]
J Biomed Opt, 2020 Hayes-Rounds C +4 more
europepmc +3 more sources
Adaptation of the Standard Off-Axis Digital Holographic Microscope to Achieve Variable Magnification
Photonics, 2021 Traditional microscopy provides only for a small set of magnifications using a finite set of microscope objectives. Here, a novel architecture is proposed for quantitative phase microscopy that requires only a simple adaptation of the traditional off ...
Xin Fan +4 more
doaj +1 more source
4D digital holographic microscopy [PDF]
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017 4D Digital Holographic Microscopy (4D-DHM) is a new technique capable of performing 3D imaging of moving objects. 3D reconstruction is made from a single hologram, but is restricted to sparse objects that occupy only small part of the volume. For a sequence of holograms, 4D-DHM therefore performs 4D (x; y; z and t) imaging.
BRODOLINE, Alexey +2 more
openaire +3 more sources
Speckle-field digital holographic microscopy [PDF]
SPIE Proceedings, 2009 The use of coherent light in conventional holographic phase microscopy (HPM) poses three major drawbacks: poor spatial resolution, weak depth sectioning, and fixed pattern noise due to unwanted diffraction. Here, we report a technique which can overcome these drawbacks, but maintains the advantage of phase microscopy - high contrast live cell imaging ...
Zahid Yaqoob +7 more
openaire +6 more sources
Characterization of microlenses by digital holographic microscopy [PDF]
Applied Optics, 2006 We demonstrate the use of digital holographic microscopy (DHM) as a metrological tool in micro-optics testing. Measurement principles are compared with those performed with Twyman-Green, Mach-Zehnder, and white-light interferometers. Measurements performed on refractive microlenses with reflection DHM are compared with measurements performed with ...
Charrière, Florian +8 more
openaire +4 more sources
Dynamic Speckle Illumination Digital Holographic Microscopy by Doubly Scattered System
Photonics, 2021 The coherent noise always exists in digital holographic microscopy due to the laser source, degrading the image quality. A method of speckle suppression using the dynamic speckle illumination, produced by double-moving diffusers, is presented in digital ...
Yun Liu +7 more
doaj +1 more source
Advances in analytical microfluidic workflows for differential cancer diagnosis
Nano Select, Volume 4, Issue 1, Page 1-47, January 2023., 2023 Microfluidics holds a great potential for an analytical examination of liquid biopsy and the development of point‐of‐care testing devices. This review overviews fundamentals and technological breakthroughs of immunolabeled and label‐free analytical microfluidic devices for screening and examining CTCs, describes engineering‐driven workflows for ...
Morteza Hasanzadeh Kafshgari +1 more
wiley +1 more source
Monitoring Human Neutrophil Differentiation by Digital Holographic Microscopy
Frontiers in Physics, 2021 We report on the usefulness of digital holographic microscopy (DHM) for the assessment of human neutrophil differentiation from myeloid cells. The cell and nuclear regions have been designated by image segmentation of the optical phase function, and the ...
Maria Augusta do R. B. F. Lima +2 more
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