Results 21 to 30 of about 99,715 (244)
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
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Sensors, 2021 Nowadays the development of automated inspection systems based on six degrees of freedom robotic manipulators is a highly relevant topic in ultrasonic non-destructive testing. One of the issues associated with such development is the problem of acquiring
Dmitry O. Dolmatov +4 more
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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
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Amplitude Zone Plate in Adaptive Optics: Proposal of the Principle
Photonics, 2022 One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance.
Vasily Matkivsky +3 more
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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 efficiency and scalable fabrication of fresnel zone plates using holographic femtosecond pulses
Nanophotonics, 2022 To meet the growing demand for photonic integration and device miniaturization, planar diffractive Fresnel zone plates (FZPs) are widely applied in integrated optical systems.
Wang Zhipeng +8 more
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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
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Linearly modulated multi-focal diffractive lens for multi-sheet excitation of flow-driven samples in a light-sheet fluorescence microscope [PDF]
EPJ Web of Conferences, 2022 Light-sheet fluorescence microscopy (LSFM) with single light-sheet illumination enables rapid 3Dimaging of living cells. In this paper we show the design, fabrication and characterization of a diffractive optical element producing several light sheets ...
Hofmann Meike +5 more
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Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020 The feasibility of beam-shaping of a Ku-Band horn as a transmitting (Tx) antenna by mounting two different versions of lenses which are kind of Fresnel Zone Plates (FZP) is studied.
Ahmet Teber
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