Results 21 to 30 of about 2,542 (213)

Aberration correction for low voltage optimized transmission electron microscopy

open access: yesMethodsX, 2018
Further development of low voltage electron microscopy leads to an aberration correction of the device in order to improve its spatial resolution. The integration of a corrector to a desktop transmission electron microscope with exclusively low-voltage ...
Jaromír Bačovský
doaj   +1 more source

Vision is protected against blue defocus

open access: yesScientific Reports, 2021
Due to chromatic aberration, blue images are defocused when the eye is focused to the middle of the visible spectrum, yet we normally are not aware of chromatic blur. The eye suffers from monochromatic aberrations which degrade the optical quality of all
Clara Benedi-Garcia   +5 more
doaj   +1 more source

Broadband Achromatic Metalens in the Long-Wave Infrared Regime

open access: yesIEEE Photonics Journal, 2023
Compared with conventional lenses, metalenses can offer smaller form factor, light weight and new functionality, and have become the focus of the recent investigations of metasurface.
Yongjian Zheng   +6 more
doaj   +1 more source

Multiwavelength Digital Holographic Imaging and Phase Unwrapping of Protozoa Using Custom Fiji Plug-ins

open access: yesFrontiers in Physics, 2019
Multiwavelength digital holographic microscopy (DHM) has been used to improve phase reconstructions of digital holograms by reducing 2π phase ambiguities.
David Cohoe   +3 more
doaj   +1 more source

Optimum design of the hybrid (diffractive/refractive) multifocal intraocular lenses implanted within human eye

open access: yesKuwait Journal of Science, 2020
The human eye natural crystalline lens becomes opaque due to cataract. To improve the eye vision, the crystalline lens was surgically removed and replaced by an Intraocular lens (IOLs).
Ali H. Al-Hamdani   +2 more
doaj   +1 more source

An optimized method for 3D fluorescence co-localization applied to human kinetochore protein architecture

open access: yeseLife, 2018
Two-color fluorescence co-localization in 3D (three-dimension) has the potential to achieve accurate measurements at the nanometer length scale. Here, we optimized a 3D fluorescence co-localization method that uses mean values for chromatic aberration ...
Aussie Suzuki   +2 more
doaj   +1 more source

Correcting the Chromatic Aberration in Barrel Distortion of Endoscopic Images [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2003
Modern endoscopes offer physicians a wide-angle field of view (FOV) for minimally invasive therapies. However, the high level of barrel distortion may prevent accurate perception of image.
Y. M. Harry Ng, C. P. Kwong
doaj  

Diffractive elements for correction of chromatic aberrations of illumination systems

open access: yesEPJ Web of Conferences, 2013
In this paper, the application of synthetic diffractive elements in white light illumination systems is presented. The elements are used for correction of chromatic aberration.
Possolt Martin   +5 more
doaj   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

open access: yesAdvanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

Intelligent design of network multimedia using big data and virtual Artificial Intelligence technology

open access: yesIET Networks, EarlyView., 2023
The topic discussed was the intelligent design of network multimedia using BD and virtual AI technology. First of all, the authors gave a brief overview of its relevant research background, and then comprehensively analysed the advantages and disadvantages of previous scholars' research on network multimedia.
Xin Zhang
wiley   +1 more source

Home - About - Disclaimer - Privacy