Results 71 to 80 of about 1,516 (173)

Imaging Nanoscale Magnetic Structures With Polarized Soft X-Ray Photons

open access: yesIEEE Photonics Journal, 2010
Imaging nanoscale magnetic structures and their fast dynamics is scientifically interesting and technologically of highest relevance. The combination of circularly polarized soft X-ray photons, which provide a strong X-ray magnetic circular dichroism ...
Peter Fischer, Mi-Young Im
doaj   +1 more source

High‐Resolution 3‐D Lithospheric Structure of the Subducting Carnegie Ridge and the Ecuadorian Margin Imaged From Teleseismic Receiver Functions

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Ecuadorian margin is a forearc‐arc system shaped by oceanic terrane accretion and Carnegie Ridge subduction, yet the accretion mechanism and ridge subduction extent remain poorly constrained. Using teleseismic P‐wave receiver functions from dense seismic arrays, we image velocity discontinuities within the overriding plate and subducting ...
Cong Li   +11 more
wiley   +1 more source

Three‐Dimensional Array Multicasting of Cylindrical Vector Beams Using Spin‐Multiplexed Dammann Vortex Metasurface

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
This study demonstrates, for the first time, a 3D volumetric cylindrical vector beam (CVB) multicasting architecture that employs multichannel array modes with an operational dimension of 3 × 3 × 5 as information carriers. This approach offers substantial potential for high‐capacity information dissemination in mode‐multiplexed communication networks ...
Zhiqiang Xie   +8 more
wiley   +1 more source

Nonlinear fresnel zone plate reflector [PDF]

open access: yes2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016
This paper describes a nonlinear Fresnel zone plate reflector designed to operate at 2.8GHz. The alternating Fresnel zones of the reflector are made from two different nonlinear metamaterials: one that reflects like a short circuit at low incident power levels and another that reflects like an open circuit.
openaire   +2 more sources

STUDY OF KINOFORM LENS AS A ZONE PLATE

open access: yesВестник Кемеровского государственного университета, 2015
The described laboratory work is devoted to studying one of modern optical elements – diffractive lens – at universities. The description of the work and guidance for its implementation are provided.
G. I. Zaitsev, G. I. Kolesnikov
doaj  

Improvement of Fresnel zone plate beam-profile monitor and application to ultralow emittance beam profile measurements

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2007
We describe the improvements of a Fresnel zone plate (FZP) beam-profile monitor, which is being developed at the KEK-ATF damping ring to measure ultralow emittance electron-beam profiles.
Hiroshi Sakai   +10 more
doaj   +1 more source

Scalable fabrication of single- and multi-layer planar lenses on fiber imaging probes

open access: yesAPL Photonics
We present a novel, scalable method for fabricating single- and multi-layer planar lenses on 125 μm-diameter fiber imaging probes, demonstrating preliminary capabilities for both lateral imaging (e.g., confocal microscopy) and axial imaging, using ...
Fei He   +7 more
doaj   +1 more source

Experimental study on subwavelength focusing optical field detection methods for micro-Fresnel zone plate

open access: yesAIP Advances
In this paper, the detection methods and detection systems for the subwavelength focusing optical field of the micro-Fresnel zone plate (FZP) are experimentally studied. First, a comparison is made between the micro/nanofabrication methods for micro-FZP,
Qiang Liu   +5 more
doaj   +1 more source

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