Porosity detection in electron beam-melted Ti-6Al-4V using high-resolution neutron imaging and grating-based interferometry
Sign Up to like & getrecommendations! Published in 2017 at "Progress in Additive Manufacturing"
DOI: 10.1007/s40964-017-0025-z
Abstract: A high-resolution neutron tomography system and a grating-based interferometer are used to explore electron beam-melted titanium test objects. The high-resolution neutron tomography system (attenuation-based imaging) has a pixel size of 6.4 µm, appropriate for detecting voids… read more here.
Keywords: resolution; high resolution; beam melted; grating based ... See more keywords
Imaging characteristics of intravascular spherical contrast agents for grating-based x-ray dark-field imaging – effects of concentrations, spherical sizes and applied voltage
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-66395-x
Abstract: This study investigates the x-ray scattering characteristics of microsphere particles in x-ray-grating-based interferometric imaging at different concentrations, bubble sizes and tube voltages (kV). Attenuation (ATI), dark-field (DFI) and phase-contrast (PCI) images were acquired. Signal-to-noise (SNR)… read more here.
Keywords: contrast; grating based; dark field; size ... See more keywords
Grating-based waveguides for dielectric laser acceleration
Sign Up to like & getrecommendations! Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5045547
Abstract: We propose a chip-scale hollow-core waveguide using high-contrast gratings as reflectors for dielectric laser acceleration. We show that confinement of a specified accelerating mode can be achieved by adjusting the thickness of a matching layer… read more here.
Keywords: core; acceleration; grating based; laser acceleration ... See more keywords
A hybrid simulation framework for computer simulation and modelling studies of grating-based x-ray phase-contrast images.
Sign Up to like & getrecommendations! Published in 2018 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/aaceb8
Abstract: Clinical studies performed using computer simulation are inexpensive, flexible methods that can be used to study aspects of a proposed imaging technique prior to a full clinical study. Typically, lesions are simulated into (experimental) data… read more here.
Keywords: phase; computer simulation; grating based; simulation ... See more keywords
Single spectrum three-material decomposition with grating-based x-ray phase-contrast CT.
Sign Up to like & getrecommendations! Published in 2020 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/ab9704
Abstract: Grating-based X-ray phase-contrast imaging provides three simultaneous image channels originating from a single image acquisition. While the phase signal provides direct access to the electron density in tomography, there is additional information on sub-resolutional structural… read more here.
Keywords: three material; ray phase; based ray; grating based ... See more keywords
Qualitative and Quantitative Evaluation of Structural Myocardial Alterations by Grating-Based Phase-Contrast Computed Tomography
Sign Up to like & getrecommendations! Published in 2018 at "Investigative Radiology"
DOI: 10.1097/rli.0000000000000408
Abstract: Objectives Grating-based phase-contrast computed tomography (gb-PCCT) relies on x-ray refraction instead of absorption to generate high-contrast images in biological soft tissue. The aim of this study was to evaluate the potential of gb-PCCT for the… read more here.
Keywords: absorption; phase; contrast; grating based ... See more keywords
Tunable Optical Grating Based on the Flexoelectric Effect in a Bent-Core Nematic Liquid Crystal
Sign Up to like & getrecommendations! Published in 2017 at "Physical review applied"
DOI: 10.1103/physrevapplied.7.064032
Abstract: Liquid-crystal display technology is ubiquitous, but these materials can also be used to make electrically tunable components for optics and photonics. The authors demonstrate voltage control of the wavelength of flexoelectric domains in a transmissive… read more here.
Keywords: optical grating; grating based; liquid crystal; tunable optical ... See more keywords
Subwavelength Grating Lens With Continuous Phase Shifts
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2021.3076289
Abstract: Planar optical device with continuous phase shifting (CPS) has raised widespread interest recently. Formed by subwavelength micro/nano structures, planar optics are able to control wavefront in multi aspects including phase and polarization. Most phase shifters… read more here.
Keywords: grating lens; grating based; continuous phase; subwavelength grating ... See more keywords
Dose and spatial resolution analysis of grating-based phase-contrast mammography using an inverse Compton x-ray source
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Medical Imaging"
DOI: 10.1117/1.jmi.7.2.023505
Abstract: Abstract Purpose: Although the mortality rate of breast cancer was reduced with the introduction of screening mammography, many women undergo unnecessary subsequent examinations due to inconclusive diagnoses. Superposition of anatomical structures especially within dense breasts… read more here.
Keywords: resolution; grating based; mammography; spatial resolution ... See more keywords
Low-dose and fast grating-based x-ray phase-contrast imaging
Sign Up to like & getrecommendations! Published in 2017 at "Optical Engineering"
DOI: 10.1117/1.oe.56.9.094110
Abstract: Abstract. X-ray phase-contrast imaging has experienced rapid development over the last few decades, and, in this technology, the phase modulation strategy of phase stepping (PS) is used most widely to measure the sample’s phase signal.… read more here.
Keywords: phase; contrast imaging; ray phase; grating based ... See more keywords
Design and development of a field deployable packaged fiber Bragg grating-based accelerometer
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.1.014104
Abstract: Abstract. Experimental realization of a fiber Bragg grating-based compact, high-sensitive, and fully packaged single-axis accelerometer has been demonstrated. To verify experimentally observed results, simulation has been carried out for the performance comparison of packaged single-axis… read more here.
Keywords: grating based; fully packaged; fiber bragg; bragg grating ... See more keywords