Results 81 to 90 of about 1,347 (193)

Adaptive focal lengths in white light focusing Fresnel lenses enabled by reflective-type and phase-only spatial light modulator

Scientific Reports, 2023
Fresnel zone plates (FZPs) are widely used in integrated optical systems to meet new cutting-edge demands for photonic integration and device miniaturizing. However, their use in applications of cross-scale fabrication still faces several obstacles, such
Pravinraj Selvaraj, Sheng-Le Wang, Tsung-Yi Hou, Cheng-Kai Liu, Ko-Ting Cheng   +4 more
doaj   +1 more source

Interlayer‐Catalyst Method for Metal‐Assisted Chemical Etching of Ultra‐High Aspect Ratio Silicon Nanostructures

Small Methods, EarlyView.
An advanced patterning method is presented for metal‐assisted chemical etching. The interlayer replaces the resist and enables catalyst deposition on a clean interface. The prepared samples show improved performance with a more reproducible etching profile, higher aspect ratio, and increased consistency over a larger area.
Bryan Peter Jost Benz, Marco Stampanoni, Lucia Romano   +2 more
wiley   +1 more source

Micro-displacement measurements with moire patterns of fresnel zone plates films [PDF]

, 2007
In this work we propose a technique to measure micro displacements using Moire patterns of Fresnel zone plates films. In this technique the pattern is placed on a mechanical mount and the displacements are measured counting the displaced fringes of an ...
Olivares-Perez, A., Perez-Cortes, M., Becerra-Macias, J., Ortiz-Gutierrez, M., Ibarra, J.C.   +4 more
core   +1 more source

A neutron microscope using a nested Wolter‐I condenser and a bank of diffractive–refractive achromatic objectives

Journal of Applied Crystallography, EarlyView.
A neutron microscope is presented comprising a Wolter‐I nested mirror optic as condenser and a 2D array of neutron achromats as objective.We present a nested Wolter‐I mirror design for a neutron condenser, which is based on established X‐ray telescope technology.
H. F. Poulsen, C. L. Andersen, N. Ravinet, J. Vila-Comamala, M. R. D. Veeraraj, E. B. Knudsen, P. K. Willendrup, S. Massahi, F. E. Christensen, D. D. M. Ferreira, M. Strobl, C. David, L. Theil Kuhn   +12 more
wiley   +1 more source

A beam‐direction cross‐vessel metrology method and error analysis for the ptychography setup at HEPS ID09

Journal of Synchrotron Radiation, EarlyView.
A beamline‐direction cross‐vessel metrology method and error analysis for ptychography setup at HEPS ID09 is proposed and implemented. A 12.3 nm reconstruction resolution of ptychography demonstrates the validity of metrology.A metrology method dedicated to position monitoring and correction for the ptychography setup at the High Energy Photon Source ...
Ruiying Liao, Zina Ou, Haihan Yu, Xuan Wang, Jie Dong, Aiyu Zhou, Wenkai Kang, Liang Zhou, Shanzhi Tang, Ming Li, Weifan Sheng   +10 more
wiley   +1 more source

X-ray and particle microscopy using Fresnel-zone plates [PDF]

, 1980
Fresnel zone plates are being used for x-ray microscopy covering a broad spectra range (.1-100 keV). They are being used as diffractive focusing elements for high resolution ( 1 ..mu..m), hard x-ray (1-100 keV) imaging ...
Ceglio, N.M.
core  

Transmission zone plates as analyzers for efficient parallel 2D RIXS-mapping

Scientific Reports, 2017
We have implemented and successfully tested an off-axis transmission Fresnel zone plate as spectral analyzer for resonant inelastic X-ray scattering (RIXS).
Felix Marschall, Zhong Yin, Jens Rehanek, Martin Beye, Florian Döring, Katharina Kubiček, Dirk Raiser, Sreevidya Thekku Veedu, Jens Buck, André Rothkirch, Benedikt Rösner, Vitaliy A. Guzenko, Jens Viefhaus, Christian David, Simone Techert   +14 more
doaj   +1 more source

A real‐time correction method for sample drift in STXM based on Fourier transform image registration

Journal of Synchrotron Radiation, EarlyView.
This study proposes an online drift‐correction method for scanning transmission X‐ray microscopy that integrates Fourier‐transform image registration with laser‐interferometer feedback, suppressing sample drift in a 100‐image stack scan from over 1 mm to below 120 nm and thereby eliminating redundant scan area while markedly enhancing experimental ...
Yuchen Jiao, Zijian Xu, Tianxiao Sun, Yufei Zhang, Yao Luo, Zhi Guo, Yong Wang, Xiangjun Zhen, Jian He, Renzhong Tai, Xiangzhi Zhang   +10 more
wiley   +1 more source

Nanometer focusing of X-rays with modified reflection zone plates [PDF]

, 2005
Transmission Fresnel zone plates and x-ray waveguides are presently the best high-resolution optical elements used in x-ray microscopy and micro-probing.
Erko, A, Firsov, A, Svintsov, A, Pfauntsch, S J, Michette, A G   +4 more
core   +1 more source

Advances in Floating Solar Desalination Systems

Water and Environment Journal, EarlyView.
This review critically classifies floating solar desalination systems into five main categories and compares their thermal performance, productivity and technological limitations. Membrane‐based and multieffect systems showed the highest efficiencies, while traditional designs remain limited by heat losses and scaling.
Daiane Silva de Abreu Benedito, Kênia Kelly Freitas Sarmento, Vanessa Rosales Conserva, Keila Machado de Medeiros, Carlos Antônio Pereira de Lima   +4 more
wiley   +1 more source