Results 51 to 60 of about 8,681 (211)

High efficiency and low absorption Fresnel compound zone plates for hard X-ray focusing

, 2005
Circular and linear zone plates have been fabricated on the surface of silicon crystals for the energy of 8 keV by electron beam lithography and deep ion plasma etching methods.
Aristov, V., Ishikawa, T., Isoyan, A., Kondratenkov, M., Kuyumchyan, A., Shulakov, E., Snigirev, A., Snigireva, I., Souvorov, A., Tamasaku, K., Trouni, K., Yabashi, M.   +11 more
core   +1 more source

Focusing performances of high numerical aperture Fresnel zone plates under different immersion media

AIP Advances, 2023
The focusing performances of high-numerical-aperture (NA) Fresnel zone plates (FZP) under different immersion media are investigated by combining the vectorial angular spectrum (VAS) theory and the finite-difference time-domain method.
Qiang Liu, Xianqing Zhou, Peng Cao, Xingming Wu, Wenshuai Liu, Xiaomin Yao, Junli Wang, Longda Wang   +7 more
doaj   +1 more source

Ion beam lithography for Fresnel zone plates in X-ray microscopy

, 2013
Fresnel Zone Plates (FZP) are to date very successful focusing optics for X-rays. Established methods of fabrication are rather complex and based on electron beam lithography (EBL).
Achim Nadzeyka, Baciocchi, Baglin, Bionta, Bourzac, Bruchhaus, Chao, Chao, Cho, Corinne Grévent, Eberhard Goering, Falcone, Fuchs, Gelb, Gerd Schneider, Gierak, Gierak, Gisela Schütz, Guilherme, Hanfei Yan, Ice, Ilinski, Joan Vila-Comamala, Joy, Kahraman Keskinbora, Kaulich, Kuyumchyan, Lloyd Peto, Mangles, Markus Weigand, Maser, Mayer, Michael Bechtel, Nachtrab, Nadzeyka, Popmintchev, Rehbein, Rolf Follath, Rudolph, Sakdinawat, Stefan Rehbein, Stiglian, Surpi, Tseng, Vila-Comamala, Vladimirsky, Wu, Yan, Yi, Zschech   +49 more
core   +1 more source

Study of the Off-Axis Fresnel Zone Plate of a Microscopic Tomographic Aberration

Sensors, 2022
A tomographic microscopy system can achieve instantaneous three-dimensional imaging, and this type of microscopy system has been widely used in the study of biological samples; however, existing chromatographic microscopes based on off-axis Fresnel zone ...
Lin Yang, Zhenyu Ma, Siqi Liu, Qingbin Jiao, Jiahang Zhang, Wei Zhang, Jian Pei, Hui Li, Yuhang Li, Yubo Zou, Yuxing Xu, Xin Tan   +11 more
doaj   +1 more source

Total angular momentum sorting in the telecom infrared with silicon Pancharatnam-Berry transformation optics [PDF]

, 2019
Parallel sorting of orbital angular momentum (OAM) and polarization has recently acquired paramount importance and interest in a wide range of fields ranging from telecommunications to high-dimensional quantum cryptography.
Capaldo, Pietro, Mafakheri, Erfan, Massari, Michele, Romanato, Filippo, Ruffato, Gianluca   +4 more
core   +2 more sources

Switchable resolution in soft x-ray tomography of single cells. [PDF]

, 2020
The diversity of living cells, in both size and internal complexity, calls for imaging methods with adaptable spatial resolution. Soft x-ray tomography (SXT) is a three-dimensional imaging technique ideally suited to visualizing and quantifying the ...
Chao, Weilun, Chen, Jian-Hua, Ekman, Axel A, Guo, Jessica, Hammel, Michal, Larabell, Carolyn A, Le Gros, Mark A, McDermott, Gerry, Oh, Sharon, Remesh, Soumya G, Weinhardt, Venera   +10 more
core   +1 more source

Fabrication of Fresnel plates on optical fibres by FIB milling for optical trapping, manipulation and detection of single cells

Scientific Reports, 2017
The development of economical optical devices with a reduced footprint foreseeing manipulation, sorting and detection of single cells and other micro particles have been encouraged by cellular biology requirements.
Rita S. Rodrigues Ribeiro, Pabitra Dahal, Ariel Guerreiro, Pedro A. S. Jorge, Jaime Viegas   +4 more
doaj   +1 more source

Surface Passivation of HgTe Nanocrystals Enabling EG/2 Open‐Circuit Voltage and Their Coupling to Dielectric Cavity for Narrow Detection

Advanced Materials, EarlyView.
This article explores how the integration of a thin shell, combined with optimized surface chemistry, enables the design of photodiodes based on short‐wave infrared HgTe nanocrystals. These photodiodes achieve an open‐circuit voltage greater than half the optical bandgap, which drastically reduces dark current. The article also explores the integration
Albin Colle, Clement Gureghian, Dario Mastrippolito, Mariarosa Cavallo, Jiho Roh, Marco Paye, Tommaso Gemo, Diogo Almeida, Adrien Khalili, Yoann Prado, Xavier Lafosse, Sandrine Ithurria, Mathieu G. Silly, Pavel Dudin, James K. Utterback, José Avila, Debora Pierucci, Emmanuel Lhuillier   +17 more
wiley   +1 more source

Image Plane Holographic Microscopy With a Table-Top Soft X-Ray Laser

IEEE Photonics Journal, 2015
We demonstrate image plane holographic microscopy in the soft X-ray (SXR) spectral region, combining the coherent output from a 46.9-nm wavelength table-top SXR laser and two Fresnel zone plates.
J. Nejdl, I. D. Howlett, D. Carlton, E. H. Anderson, W. Chao, M. C. Marconi, J. J. Rocca, C. S. Menoni   +7 more
doaj   +1 more source

Development of Ground-testable Phase Fresnel Lenses in Silicon

, 2006
Diffractive/refractive optics, such as Phase Fresnel Lenses (PFL's), offer the potential to achieve excellent imaging performance in the x-ray and gamma-ray photon regimes.
B. Morgan, B. Morgan, Brian Morgan, D. Jerius, G. Skinner, G. Skinner, Gerry Skinner, H. Dammann, J. Kirz, John Krizmanic, Keith Gendreau, Neil Gehrels, Reza Ghodssi, Robert Streitmatter, Zaven Arzoumanian   +14 more
core   +1 more source