Results 51 to 60 of about 64,115 (273)

Active optics: deformable mirrors with a minimum number of actuators [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
We present two concepts of deformable mirror to compensate for first order optical aberrations. Deformation systems are designed using both elasticity theory and Finite Element Analysis in order to minimize the number of actuators.
Laslandes M., Hugot E., Ferrari M.
doaj   +1 more source

Design and modeling of corneal aberration correction with diffractive IOL based on ZEMAX

open access: yesResults in Optics, 2023
This paper estimates a specific detailed diffractive aspheric bifocal intraocular lens (IOL) used to correct and reduce corneal aberration and a patient’s standard surgical implantation.
Halah A. Hashim, Mohammed Fawzi Mohammed
doaj   +1 more source

Topological aberration of optical vortex beams and singularimetry of dielectric interfaces

open access: yes, 2012
The splitting of a high-order optical vortex into a constellation of unit vortices, upon total reflection, is described and analyzed. The vortex constellation generalizes, in a local sense, the familiar longitudinal Goos-H\"anchen and transverse Imbert ...
Dennis, Mark R., Götte, Jörg B.
core   +1 more source

Harmonically matched grating-based full-field quantitative high-resolution phase microscope for observing dynamics of transparent biological samples [PDF]

open access: yes, 2007
We have developed a full-field high resolution quantitative phase imaging technique for observing dynamics of transparent biological samples. By using a harmonically matched diffraction grating pair (600 and 1200 lines/mm), we were able to obtain non ...
Heng, Xin   +3 more
core   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

open access: yesFEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

Automatic Modal Wavefront Estimation and Correction for Optical Aberration

open access: yesIEEE Photonics Journal, 2019
Modal estimation of aberration can quantify the amount of aberration, which plays an important role in optical system optimization, aberration correction, and so on. Here, we propose a simple but effective method to find the modal wavefront of aberration.
Xiaomin Lai   +4 more
doaj   +1 more source

Overcoming the penetration depth limit in optical microscopy: Adaptive optics and wavefront shaping [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2019
Despite the unique advantages of optical microscopy for molecular specific high resolution imaging of living structure in both space and time, current applications are mostly limited to research settings.
Cheolwoo Ahn   +5 more
doaj   +1 more source

Non-dispersive optics using storage of light

open access: yes, 2010
We demonstrate the non-dispersive deflection of an optical beam in a Stern-Gerlach magnetic field. An optical pulse is initially stored as a spin-wave coherence in thermal rubidium vapour.
Leon Karpa   +3 more
core   +1 more source

Exoplanet detection with simultaneous spectral differential imaging: effects of out-of-pupil-plane optical aberrations [PDF]

open access: yes, 2006
Imaging faint companions (exoplanets and brown dwarfs) around nearby stars is currently limited by speckle noise. To efficiently attenuate this noise, a technique called simultaneous spectral differential imaging (SSDI) can be used.
Macintosh, Bruce   +2 more
core   +2 more sources

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

open access: yesFEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino   +7 more
wiley   +1 more source

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