Results 31 to 40 of about 72,954 (249)

Digital Holographic Microscopy

Microscopy and Microanalysis, 1999
Abstract We applied phase-shifting digital holography to microscopy in this paper. At first lensless microscopy is proposed, in which no optical adjustment is necessary. Then, the method is applied to relax the limitation of focal depth in traditional optical microscopy.
Ichirou Yamaguchi, Hywel Morgan, Tong Zhang   +2 more
openaire   +2 more sources

Digital holographic microscopy for diabetes screening [PDF]

SPIE Newsroom, 2016
A digital holographic microscope operating in telecentric mode could be used to diagnose diabetes and evaluate long-term glycemic control in patients with diabetes.
Doblas Expósito, Ana Isabel, Martínez Corral, Manuel, Saavedra Tortosa, Genaro   +2 more
openaire   +3 more sources

3D differential interference contrast microscopy using polarisation‐sensitive tomographic diffraction microscopy

Journal of Microscopy, Volume 289, Issue 2, Page 128-133, February 2023., 2023
Summary Tomographic diffraction microscopy (TDM) is a generalisation of digital holographic microscopy (DHM), for which the illumination angle onto the sample is fully controlled, which has become a tool of choice for 3D, high‐resolution imaging of unlabelled samples.
Nicolas Verrier, Asemare Mengistie Taddese, Riadh Abbessi, Matthieu Debailleul, Olivier Haeberlé   +4 more
wiley   +1 more source

Diabetes screening by telecentric digital holographic microscopy [PDF]

Journal of Microscopy, 2015
SummaryDiabetes is currently the world's fastest growing chronic disease and it is caused by deficient production of insulin by the endocrine pancreas or by abnormal insulin action in peripheral tissues. This results in persistent hyperglycaemia that over time may produce chronic diabetic complications.
Doblas Expósito, Ana Isabel, Roche, Enrique, Ampudia Blasco, Francisco Javier, Martínez Corral, Manuel, Saavedra Tortosa, Genaro, García Sucerquia, Jorge Iván   +5 more
openaire   +6 more sources

Linearity and Optimum-Sampling in Photon-Counting Digital Holographic Microscopy

Photonics, 2022
In the image plane configurations frequently used in digital holographic microscopy (DHM) systems, interference patterns are captured by a photo-sensitive array detector located at the image plane of an input object.
Nazif Demoli, Denis Abramović, Ognjen Milat, Mario Stipčević, Hrvoje Skenderović   +4 more
doaj   +1 more source

Review on methods of solving the refractive index-thickness coupling problem in digital holographic microscopy of biological cells [PDF]

Optics Communications, Vol. 422, pp. 8-16, 2018, 2019
Digital holographic microscopy is a thriving imaging modality that attracted considerable research interest in quantitative biological cell imaging due to its ability to not only create excellent label-free contrast, but also supply valuable physical information regarding the density and dimensions of the sample with nanometer-scale axial sensitivity ...
arxiv   +1 more source

Image Contrast Improvement in Interference-Dark-Field Digital Holographic Microscopy

Photonics, 2021
Conventional dark-field digital holographic microscopy (DHM) techniques require the use of specialized optics, and, thus, obtaining dark-field images with high contrast has a high cost. Herein, we propose a DHM system that uses an interference-dark-field
Chi-Ching Chang, Yang-Kun Chew, Huang-Tian Chan, Mei-Fang Chou, Je-Chung Wang   +4 more
doaj   +1 more source

Physics-driven learning for digital holographic microscopy [PDF]

EPJ Web of Conferences
Deep neural networks based on physics-driven learning make it possible to train neural networks with a reduced data set and also have the potential to transfer part of the numerical computations to optical processing.
Kieber Rémi, Froehly Luc, Jacquot Maxime   +2 more
doaj   +1 more source

Real-time digital holographic microscopy observable in multi-view and multi-resolution [PDF]

Journal of Optics, 12, 065402 (4pp) (2010), 2010
We propose a real-time digital holographic microscopy, that enables simultaneous multiple reconstructed images with arbitrary resolution, depth and positions, using Shifted-Fresnel diffraction instead of Fresnel diffraction. In this system, we used four graphics processing units (GPU) for multiple reconstructions in real-time. We show the demonstration
arxiv   +1 more source

Study on Quantitative Phase Imaging by Dual-Wavelength Digital Holography Microscopy

International Journal of Optics, 2018
A dual-wavelength digital holographic microscopy with premagnification is proposed to obtain the object surface measurements over the large gradient. The quantitative phase images of specimens are captured in high precision by the processing of filtering
Lin Hu, Yunxiu Shui, Yaohui Dai, Haiyu Wu, Gang Zhu, Yan Yang   +5 more
doaj   +1 more source