Results 21 to 30 of about 5,834 (266)

Efficient diffractive phase optics for electrons

open access: yesNew Journal of Physics, 2014
Electron diffraction gratings can be used to imprint well-defined phase structure onto an electron beam. For example, diffraction gratings have been used to prepare electron beams with unique phase dislocations, such as electron vortex beams, which hold ...
Tyler R Harvey   +5 more
doaj   +1 more source

Diffraction properties of azimuthally symmetric gratings in a hollow circular dielectric waveguide

open access: yesResults in Physics, 2020
Diffraction gratings can be used in cavities of terahertz lasers for generating wave beams with special polarization. Adequate using of such gratings needs preliminary theoretical investigation of their diffraction properties.
Jihong Cui   +5 more
doaj   +1 more source

RETRACTED: Hu, H.; Bayanheshig. Exploration of a Flexible Metasurface for Strain Sensors: A Perspective from 2D Grating Fabrication to Spectral Characterization. Appl. Sci. 2022, 12, 10007

open access: yesApplied Sciences
The journal retracts and remove the article “Exploration of a Flexible Metasurface for Strain Sensors: A Perspective from 2D Grating Fabrication to Spectral Characterization” [...]
Hao Hu, Bayanheshig
doaj   +1 more source

Recording of the Multiplexed Bragg Diffraction Gratings for Waveguides Using Phase Mask

open access: yesPhotonics, 2020
The paper describes a stable method for multiplexed recording of the Bragg diffraction gratings for waveguides using a phase mask. Diffraction waveguides in this experiment were made of photo-thermo-refractive glass.
Maria Shishova   +3 more
doaj   +1 more source

Properties of Holographic Elements Based on Periodic Structures in a Wide Range of Angles of Incidence

open access: yesPhotonics, 2021
An experimental study is carried out on the diffraction and angular selectivity properties of gratings for a wide range of angles of incidence in three-dimensional space.
Nadezhda Vorzobova, Pavel Sokolov
doaj   +1 more source

High Efficiency Polarization-Independent Slanted Grating for RGB Bands

open access: yesIEEE Photonics Journal, 2021
We proposed a slanted grating suitable for RGB bands which is polarization-independent and has a high diffraction efficiency of −1st order under normal incidence.
Ge Jin   +5 more
doaj   +1 more source

Broadband spectropolarimeter based on spatial heterodyne spectroscopy and channeled polarimetric technique

open access: yesResults in Physics
A spectropolarimeter based on spatial heterodyne spectroscopy and the channeled polarimetric technique (SSHSCP) is introduced. The SSHSCP uses a polarization grating for channel modulation, meaning that the Stokes parameter is no longer dependent on the ...
Jun Chen   +7 more
doaj   +1 more source

Highly efficient multicolor multifocus microscopy by optimal design of diffraction binary gratings

open access: yesScientific Reports, 2017
Multifocus microscopy (MFM) allows sensitive and fast three-dimensional imaging. It relies on the efficient design of diffraction phase gratings yielding homogeneous intensities in desired diffraction orders. Such performances are however guaranteed only
Bassam Hajj   +4 more
doaj   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

open access: yesAdvanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus   +8 more
wiley   +1 more source

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