Results 11 to 20 of about 5,322 (221)
Wavefront division digital holographic microscopy
Biomedical 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 +4 more sources
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
openaire +3 more sources
Photorefractive digital holographic microscopy: an application in the microdevices surfaces
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsIn this work, we present a Photorefractive Digital Holographic Microscopy (PRDHM) technique based on the writing-reading holographic process in photorefractive Bi12TiO20 (BTO) crystal using the numerical reconstruction of the phase and amplitude image ...
Marcos R. R. Gesualdi +5 more
doaj +2 more sources
Digital Holographic Microscopy and Python
, 2019 Holograms are Interference, circular pattern of bright and dark lines surrounding an object due to light passage over it in 2D plane. The Hungarian-British physicist Dennis Gabor was awarded with Nobel Prize for inventing and applying this phenomenon for improving electron microscopy in 1971.
Nishadh K A, Nishadh K A (8197689)
openaire +3 more sources
Digital Holographic Microscopy [PDF]
Imaging and Applied Optics 2016, 2011 Digital holographic microscopy (DHM) is an interferometric technique that measures 3D topography from a single image, acquired in a few microseconds. With these features, DHM performs real-time measurements, up to twenty frames per second in live mode, and is only limited by the camera acquisition rate in post processing mode.
Tristan Colomb, Jonas Kühn
+5 more sources
Digital Holographic Microscopy [PDF]
PhotonicsViews, 2020 AbstractImaging without labeling has received increasing attention during the last few years as a minimally invasive modality to observe proteins, cells, and tissues, and to study biological specimens with minimized modification and sample preparation requirements.
Björn Kemper, Elizabeth Illy
openaire +2 more sources
Digital Holographic Microscopy [PDF]
Optik & Photonik, 2007 AbstractDigital holographic microscopy provides quantitative phase contrast imaging that is suitable for high resolving investigations on reflective surfaces as well as for marker‐free analysis of living cells. Results from engineered surfaces and living cells demonstrate applications of digital holographic microscopy for technical inspection and life ...
Björn Kemper +2 more
openaire +1 more source
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
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
doaj +1 more source
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 ...
Park, Y Park, YongKeun +5 more
openaire +4 more sources