Results 111 to 120 of about 113,174 (295)

Lensfree computational microscopy tools for cell and tissue imaging at the point-of-care and in low-resource settings. [PDF]

open access: yes, 2012
The recent revolution in digital technologies and information processing methods present important opportunities to transform the way optical imaging is performed, particularly toward improving the throughput of microscopes while at the same time ...
Bishara, Waheb   +6 more
core  

Roadmap to Nanomedical Applications: Nanotoxicology and In Vitro Guidelines for Lanthanide‐Doped Luminescence Nanothermometers

open access: yesAdvanced NanoBiomed Research, EarlyView.
Lanthanide‐based luminescence nanothermometry holds multifaceted potential for nanomedical applications, yet despite significant research advances, clinical translation of the engineered nanomaterials is still controversial and widely disputed. This is related to crucial nanotoxicological aspects that must be addressed at the preclinical level ...
Simona Premcheska   +2 more
wiley   +1 more source

Exploring shot noise and Laser Doppler imagery with heterodyne holography

open access: yes, 2012
Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators.
Atlan, Michael   +3 more
core   +1 more source

Deconvolution for digital in-line holographic microscopy

open access: yesaot, 2013
Abstract To improve the resolution in point source digital in-line holography, we present two deconvolutions, one for the illumination system (coherent or partially coherent light source such as a laser or diode and pinhole) and one for the finite numerical aperture of the hologram.
Brenden Scott Nickerson   +1 more
openaire   +2 more sources

3D tracking the Brownian motion of colloidal particles using digital holographic microscopy and joint reconstruction [PDF]

open access: yesApplied Optics Vol. 54, Issue 16, pp. 4996-5002 (2015), 2015
In-line digital holography is a valuable tool for sizing, locating and tracking micro- or nano-objects in a volume. When a parametric imaging model is available, Inverse Problems approaches provide a straightforward estimate of the object parameters by fitting data with the model, thereby allowing accurate reconstruction.
arxiv   +1 more source

A simple approach to biophysical profiling of blood cells in extranodal NK/T cell lymphoma patients using deep learning‐integrated image cytometry

open access: yesBMEMat, EarlyView.
We developed a deep learning‐integrated image cytometry technique to profile biophysical attributes of blood cells from ENKTL patients. We demonstrate specific changes in cell size, eccentricity, and refractive index during treatment in a label‐free manner.
Seongcheol Park   +8 more
wiley   +1 more source

Automatic Identification of Malaria-Infected RBC With Digital Holographic Microscopy Using Correlation Algorithms

open access: yesIEEE Photonics Journal, 2012
Diagnosis of malaria is important for its medication and treatment. An automatic compact diagnostic tool will be advantageous especially for healthcare personnel working in developing countries, which lack trained professionals and high-quality ...
A. Anand   +3 more
doaj   +1 more source

Fast‐switchable polarization‐dependent bifocal lenses for AR displays

open access: yesJournal of the Society for Information Display, EarlyView.
Polarization‐dependent bifocal Pancharatnam‐Berry phase lenses, fabricated via photoalignment, integrate bifocal functionality for AR displays. An electrically suppressed helix ferroelectric liquid crystal polarization rotator enables rapid switching (35 μs) between dual depths or field‐of‐views (FOVs) in longitudinal and transverse configurations ...
Ming Cheng   +6 more
wiley   +1 more source

Bendable Fiber Lens for Minimally Invasive Endoscopy

open access: yesLaser &Photonics Reviews, EarlyView.
Translating ex vivo imaging to minimally invasive in vivo applications is of outstanding scientific and socioeconomic relevance. 3D imaging based on tiny lensless fiber endoscopes requires complex setups and computational schemes, so far. Bridging this gap, imaging through a unique optical fiber that mimics the functionality of a lens but is minimally ...
Ronja Stephan   +10 more
wiley   +1 more source

Optical diffraction tomography using a digital micromirror device for stable measurements of 4-D refractive index tomography of cells

open access: yes, 2016
Optical diffraction tomography (ODT) is an interferometric microscopy technique capable of measuring 3-D refractive index (RI) distribution of transparent samples.
Hong, Kihyun   +6 more
core   +1 more source

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