Results 21 to 30 of about 843 (178)

Immersion Microlithography at 193 nm with a Talbot Prism Interferometer [PDF]

SPIE Proceedings, 2004
A Talbot interference immersion lithography system that uses a compact prism is presented. The use of a compact prism allows the formation of a fluid layer between the optics and the image plane, enhancing the resolution.
Smith, Bruce W., Bruce W. Smith, Bourov, Anatoly, Frank C. Cropanese, Zavyalova, Lena V., Yongfa Fan, Lafferty, Neal, Lena V. Zavyalova, Anatoly Bourov, Kang, Hoyoung, Cropanese, Frank, Neal V. Lafferty, Hoyoung Kang, Fan, Yongfa   +13 more
core   +2 more sources

A four-grating interferometer for x-ray multi-contrast imaging. [PDF]

Med Phys
Background: X-ray multi-contrast imaging with gratings provides a practical method to detect differential phase and dark-field contrast images in addition to the x-ray absorption image traditionally obtained in laboratory or hospital environments ...
Miao H, Williams JC, Josell D.
europepmc   +2 more sources

Laboratory-based X-ray phase-imaging scanner using Talbot-Lau interferometer for non-destructive testing

Scientific Reports, 2017
An X-ray Talbot-Lau interferometer scanning setup consisting of three transmission gratings, a laboratory-based X-ray source that emits X-rays vertically, and an image detector on the top has been developed for the application of X-ray phase imaging to ...
Shivaji Bachche, Masahiro Nonoguchi, Koichi Kato, Masashi Kageyama, Takafumi Koike, Masaru Kuribayashi, Atsushi Momose   +6 more
doaj   +2 more sources

An elliptical Talbot interferometer for fiber Bragg grating fabrication

Review of Scientific Instruments, 2005
A simple and easily aligned two-mirror interferometer for fabricating Bragg gratings in optical bulk materials, waveguides, and fibers is presented. The interferometer consists of a simple phase mask splitting element and two dielectric mirrors optimized
Stavros Pissadakis, Pissadakis, Stavros, Reekie, Laurence, Laurence Reekie   +3 more
core   +3 more sources

Beam-hardening correction in clinical x-ray dark-field chest radiography using deep-learning-based bone segmentation. [PDF]

Med Phys
Abstract Background Dark‐field radiography is a novel x‐ray imaging modality that provides complementary diagnostic information by visualising microstructural properties of lung tissue. Implemented via a Talbot–Lau interferometer integrated into a conventional x‐ray system, it permits simultaneous acquisition of perfectly registered attenuation and ...
Kaster L, Lochschmidt ME, Bauer AM, Dorosti T, Demianova S, Koehler T, Pfeiffer D, Pfeiffer F.   +7 more
europepmc   +2 more sources

Look-up table correction for beam hardening-induced signal of clinical dark-field chest radiographs. [PDF]

Med Phys
Abstract Background The microstructure of material at a μm$\,\umu\mathrm{m}$ length scale leads to ultra‐small‐angle scattering of X‐rays, which typically occurs, e.g., for lung tissue or some plastic foams. When using an interferometer, this effect alters the visibility of the fringe pattern, which can be detected and resolved by the detector.
Lochschmidt ME, Urban T, Kaster L, Schick RC, Koehler T, Pfeiffer D, Pfeiffer F.   +6 more
europepmc   +2 more sources

Automated alignment of XFEL nanofocusing mirrors via wavefront optimization. [PDF]

J Synchrotron Radiat
An automated alignment system for nanofocusing Kirkpatrick–Baez mirrors has been developed at SACLA. A wavefront optimization technique routinely provides nanofocused XFEL beams.An automated alignment procedure, based on wavefront measurement with a single‐grating interferometer, has been developed for precise tuning of Kirkpatrick–Baez nanofocusing ...
Yamada J, Yamaguchi G, Inoue I, Osaka T, Inubushi Y, Yabashi M.   +5 more
europepmc   +2 more sources

Experiments with a pulsed Talbot Lau matter-wave interferometer

, 2017
Das quantenmechanische Superpositionsprinzip postuliert, daß massive Teilchen delokalisiert sein können und sich als Materiewellen im Raum ausbreiten. Dieses Verhalten konnte bisher z.B.
Rodewald, Jonas
core   +2 more sources

Simultaneous signal optimization of refraction and attenuation in x-ray grating interferometry: A case study for breast imaging. [PDF]

Med Phys
Abstract Background X‐ray grating interferometry has emerged as a promising imaging technique for breast computed tomography (BCT), offering complementary contrast from refraction beyond conventional absorption imaging. Although it provides higher resolution, the required dose levels remain above those typically used for breast cancer diagnostic ...
Pereira A, Rawlik M, Spindler S, Kaser S, Etter D, Iori G, Stauber M, Romano L, Stampanoni M.   +8 more
europepmc   +2 more sources

Structural properties in ruptured mitral chordae tendineae measured by synchrotron-based X-ray phase computed tomography. [PDF]

J Synchrotron Radiat, 2023
Tissue density measured by synchrotron‐based X‐ray phase computed tomography is shown to be associated with the fragility of the ruptured mitral chordae tendineae.The link between the structural properties and the rupturing of chordae tendineae in the mitral valve complex is still unclear. Synchrotron‐radiation‐based X‐ray phase computed tomography (SR‐
Koda Y, Tsukube T, Hoshino M, Yagi N, Ishibashi-Ueda H, Okada K.   +5 more
europepmc   +2 more sources