Results 51 to 60 of about 1,750,058 (245)

Optimized Iterative Algorithm to Generate Computer-Generated Holograms Based on the Intermediate Angular-Spectrum Method

open access: yesIEEE Photonics Journal, 2022
The intermediate angular-spectrum method is an efficient way to calculate computer-generated holograms without zero-padding and cropping operation. In this paper, we present an optimized iteration algorithm to improve the reconstruction quality in the ...
Dapu Pi, Juan Liu, Yongtian Wang
doaj   +1 more source

A new, sensitive diffractive optic angle meter

open access: yes, 2002
A sensitive diffractive optic angle meter scheme, based on coherent imaging of two laterally shifted phase gratings onto a third, their periods matched, is presented and experimentally investigated.
Kazemi Moud, Kamyar   +8 more
core   +1 more source

A Multi-Plane Augmented Reality Head-Up Display System Based on Volume Holographic Optical Elements With Large Area

open access: yesIEEE Photonics Journal, 2021
The traditional head-up display (HUD) system has the disadvantages of a small area and a single display plane, here we propose and design an augmented reality (AR) HUD system with multi-plane, large area, high diffraction efficiency and a single picture ...
Zhenlv Lv, Juan Liu, Liangfa Xu
doaj   +1 more source

Autoindexing diffraction images withiMosflm [PDF]

open access: yesActa Crystallographica Section D Biological Crystallography, 2013
An overview of autoindexing diffraction images based on one-dimensional fast Fourier transforms is presented. The implementation of the algorithm in theMosflm/iMosflmprogram suite is described with a discussion of practical issues that may arise and ways of assessing the success or failure of the procedure.
Powell, Harold R.   +2 more
openaire   +2 more sources

Potential of Attosecond Coherent Diffractive Imaging [PDF]

open access: yesPhysical Review Letters, 2020
14 pages, 4 ...
Arjun Rana   +7 more
openaire   +3 more sources

Design of infrared diffractive telescope imaging optical systems

open access: yes, 2015
Diffractive telescope is an updated imaging technology, it differs from conventional refractive and reflective imaging system, which is based on the principle of diffraction image. It has great potential for developing the larger aperture and lightweight
Kang, Fuzeng   +11 more
core   +1 more source

Hybrid Space Calibrated 3D Network of Diffractive Hyperspectral Optical Imaging Sensor

open access: yesSensors
Diffractive multispectral optical imaging plays an essential role in optical sensing, which typically suffers from the image blurring problem caused by the spatially variant point spread function.
Hao Fan   +7 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

The advantages of metalenses over diffractive lenses

open access: yesNature Communications, 2020
Optical elements play a crucial role in many modern systems, from cellphones to missiles. The miniaturization trend poses a challenge to optics, since classical lenses and mirrors tend to be bulky.
Jacob Engelberg, Uriel Levy
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

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