Results 21 to 30 of about 87,657 (169)
Single-focus binary Fresnel zone plate
Optics and Laser Technology, 2017 In this work, we propose and analyze a novel kind of binary Fresnel zone plate with single focus. It consists of a Fresnel zone plate whose zones have rough edges.
FRANCISCO JOSÉ Torcal-Milla +1 more
exaly +2 more sources
A compound Kinoform/Fresnel zone plate lens with 15 nm resolution and high efficiency in soft x-ray
Nanotechnology, 2023 X-ray microscope as an important nanoprobing tool plays a prevailing role in nano-inspections of materials. Despite the fast advances of high resolution focusing/imaging reported, the efficiency of existing high-resolution zone plates is mostly around 5%
Xujie Tong +12 more
semanticscholar +1 more source
IEEE Antennas and Wireless Propagation Letters, 2023 Several passive components of fifth-generation (5G) and future sixth-generation (6G) telecommunication devices require substrate materials of very low dielectric permittivity and losses to avoid wave absorption, reflection, and interference.
M. Kokkonen +5 more
semanticscholar +1 more source
Chromatic confocal measurement method using a phase Fresnel zone plate.
Optics Express, 2022 A chromatic confocal measurement method based on a phase Fresnel zone plate (FZP) is described. Strong dispersion of FZP results in significant axial focal shift.
Tao Liu +6 more
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2021 Fresnel zone plate (FZP) lens antenna, consisting of a set of alternative transparent and opaque concentric rings arranged on curvilinear or flat surfaces, have been widely used in various fields for sensing and communications. Nevertheless, the state-of-
Jianfeng Zhu +7 more
semanticscholar +1 more source
Deployable Fresnel Zone Plate Antenna for CubeSats
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023 Earth observation satellite missions are becoming increasingly important and have been also boosted by the appearance of small satellites, affordable to small companies and universities. Technology miniaturization and the reduction in power consumption have been a key point in the reduction of the dimensions of these spacecrafts, being able to ...
Garcia Morilla, Alejandro +7 more
openaire +1 more source
Advanced Optical Materials, 2022 Atomic layers of group‐VI 2D transition metal dichalcogenides (TMDCs) with substantial materials system and unique physicochemical properties have exhibited excellent performances in electronics and optoelectronics. However, photodetectors based on TMDCs
Jie Qiao +7 more
semanticscholar +1 more source
High-energy x-ray nanotomography introducing an apodization Fresnel zone plate objective lens.
Review of Scientific Instruments, 2021 In this study, high-energy x-ray nanotomography (nano-computed tomography, nano-CT) based on full-field x-ray microscopy was developed. Fine two-dimensional and three-dimensional (3D) structures with linewidths of 75 nm-100 nm were successfully resolved ...
A. Takeuchi +7 more
semanticscholar +1 more source
Review of Scientific Instruments, 2021 Being able to provide high-resolution x-ray radiography is crucial in order to study hydrodynamic instabilities in the high-energy density regime at the National Ignition Facility (NIF).
A. Do +8 more
semanticscholar +1 more source
Zoom liquid lens employing a multifocal Fresnel zone plate.
Optics Express, 2021 We propose a zoom liquid lens employing a multifocal Fresnel zone plate. The proposed lens has two optical surfaces: liquid-liquid interface and Fresnel zone plate.
Lei Li +4 more
semanticscholar +1 more source