Results 21 to 30 of about 1,160,757 (195)

Deep-ultraviolet ptychographic pocket-scope (DART): mesoscale lensless molecular imaging with label-free spectroscopic contrast [PDF]

open access: yeseLight
The mesoscale characterization of biological specimens has traditionally required compromises between resolution, field-of-view, depth-of-field, and molecular specificity, with most approaches relying on external labels.
Ruihai Wang   +13 more
doaj   +2 more sources

Continuous Live-Cell Culture Monitoring by Compact Lensless LED Microscopes

open access: yesProceedings, 2018
A compact lensless microscope comprising a custom-made LED engine and a CMOS imaging sensor has been developed for live-cell culture imaging inside a cell incubator environment.
Gregor Scholz   +13 more
doaj   +3 more sources

Enhanced detection of malaria infected red blood cells through phase driven classification [PDF]

open access: yesScientific Reports
Digital holographic microscopy (DHM) has emerged as a powerful, label-free technique for visualizing and analyzing biological samples. By extracting the intrinsic optical properties of red blood cells (RBCs), DHM enables the detection of infection ...
Charlotte Kyeremah   +4 more
doaj   +2 more sources

Lensless Fluorescent Microscopy on a Chip [PDF]

open access: yesJournal of Visualized Experiments, 2011
On-chip lensless imaging in general aims to replace bulky lens-based optical microscopes with simpler and more compact designs, especially for high-throughput screening applications. This emerging technology platform has the potential to eliminate the need for bulky and/or costly optical components through the help of novel theories and digital ...
Ahmet F, Coskun   +3 more
openaire   +2 more sources

Self-calibration for lensless color microscopy [PDF]

open access: yesApplied Optics, 2017
Lensless color microscopy (also called in-line digital color holography) is a recent quantitative 3D imaging method used in several areas including biomedical imaging and microfluidics. By targeting cost-effective and compact designs, the wavelength of the low-end sources used is known only imprecisely, in particular because of their dependence on ...
Flasseur, Olivier   +6 more
openaire   +2 more sources

Robust object characterization from lensless microscopy videos [PDF]

open access: yes2017 25th European Signal Processing Conference (EUSIPCO), 2017
Publication in the conference proceedings of EUSIPCO, Kos island, Greece ...
Flasseur, Olivier   +3 more
openaire   +3 more sources

Speckle-Correlation Scattering Matrix Approaches for Imaging and Sensing through Turbidity

open access: yesSensors, 2020
The development of optical and computational techniques has enabled imaging without the need for traditional optical imaging systems. Modern lensless imaging techniques overcome several restrictions imposed by lenses, while preserving or even surpassing ...
YoonSeok Baek   +3 more
doaj   +1 more source

Active metasurface designs for lensless and detector-limited imaging. [PDF]

open access: yesNanophotonics
Abstract The emergence of metasurfaces has enabled lightweight, compact imaging with degrees of freedom which previously required complex optical setups to achieve, such as polarization, wave vector, and spectrum. To date, most metasurface‐enabled imaging systems have thus far been ‘passive’, and therefore subject to fundamental information and ...
Belleville J, Thureja P, Atwater HA.
europepmc   +2 more sources

Pixel Super-Resolution Phase Retrieval for Lensless On-Chip Microscopy via Accelerated Wirtinger Flow

open access: yesCells, 2022
Empowered by pixel super-resolution (PSR) and phase retrieval techniques, lensless on-chip microscopy opens up new possibilities for high-throughput biomedical imaging.
Yunhui Gao, Feng Yang, Liangcai Cao
doaj   +1 more source

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