Results 21 to 30 of about 29,331 (339)
Hollow Electron Ptychographic Diffractive Imaging [PDF]
Physical Review Letters, 2018 We report a method for quantitative phase recovery and simultaneous electron energy loss spectroscopy analysis using ptychographic reconstruction of a data set of "hollow" diffraction patterns. This has the potential for recovering both structural and chemical information at atomic resolution with a new generation of detectors.
Song, B +8 more
openaire +3 more sources
Micro and Nano Engineering, 2022 Diffractive lenses can replicate the optical functions of their refractive counterparts using an equivalent surface relief phase profile, enabling more compact optical assemblies and microsystem integration.
Diogo E. Aguiam +7 more
doaj +1 more source
Applied Sciences, 2022 Diffractive optical elements (DOEs) are difficult to apply in natural scenes imaging covering the visible bandwidth-spectral due to their strong chromatic aberration and the decrease in diffraction efficiency.
Kai Liu +8 more
doaj +1 more source
Color imaging using a system based on 3 diffractive lenses
Компьютерная оптика, 2023 The possibility of essentially reducing the weight and production cost of computer vision systems has led to the publication of a large number of research works dealing with the development of new imaging systems based on diffractive optics.
S. Stepanenko +4 more
doaj +1 more source
Wide Field-of-View Imaging With Wavefront Coded Diffractive Photon Sieves
IEEE Photonics Journal, 2016 We report a demonstration of a wide field-of-view (FOV) imaging with a wavefront coded diffractive photon sieves. In conventional diffractive photon sieves (or other diffractive optical elements), clear imaging can only be achieved within near-zero FOV ...
Xiaonan Zhao +4 more
doaj +1 more source
Diffractive X-ray Telescopes [PDF]
, 2010 Diffractive X-ray telescopes using zone plates, phase Fresnel lenses, or related optical elements have the potential to provide astronomers with true imaging capability with resolution several orders of magnitude better than available in any other ...
Skinner, Gerald K.
core +3 more sources
IEEE Photonics Journal, 2019 Novel diffractive elements are presented to produce zero-order Bessel beams in the terahertz (THz) band. First, diffractive elements are designed as phase plates to change the direction of the incident Gaussian beam.
Liting Niu +7 more
doaj +1 more source
Rapid sensing of hidden objects and defects using a single-pixel diffractive terahertz sensor
Nature Communications, 2023 Terahertz waves offer advantages for nondestructive detection of hidden objects/defects in materials, as they can penetrate most optically-opaque materials.
Jingxi Li +8 more
doaj +1 more source
IEEE Photonics Journal, 2022 Considering that the driver and passengers need different display content in the vehicle display, we propose a dual-view and multi-content head-up display (HUD).
Zhenlv Lv, Juan Liu, Yan Yang
doaj +1 more source
Deep-Learning Electron Diffractive Imaging [PDF]
Physical Review Letters, 2023 We report the development of deep-learning coherent electron diffractive imaging at subangstrom resolution using convolutional neural networks (CNNs) trained with only simulated data. We experimentally demonstrate this method by applying the trained CNNs to recover the phase images from electron diffraction patterns of twisted hexagonal boron nitride ...
Dillan J. Chang +8 more
openaire +3 more sources