Results 11 to 20 of about 56,935 (169)
Optics Express, 2023 We propose the concept of a Dirac grating, where periodic permittivity perturbations approach a train of Dirac functions. We show that Dirac gratings can yield identical spectral characteristics for higher-order gratings compared to first-order gratings of the same length. Using an inverse Fourier transform technique, we design different types of Dirac
Saeidi, Shayan +3 more
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A processing method for rough cutting hourglass worm on general NC lathe
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019 The manufacturing method of two spatial-orthogonal rotary axis linkage is usually used to cut hourglass worm. However, the traditional processing method of roughing tooth groove depends on the special machine, specific tool, and its processing efficiency
Xinyang QIU +3 more
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Theoretical Investigation on Microcavity Coupler for Terahertz Quantum-Well Infrared Photodetectors
IEEE Access, 2020 Resonant behaviors and absorption enhancement of metallic grating-dielectric-metal (GDM) microcavity are theoretically investigated. The GDM structure is treated as periodic unit cells of two serially-connected metal-dielectric-metal (MDM) and air ...
Xuguang Guo +5 more
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EP Europace, 2007 A 72-year-old man presented with advanced symptoms of heart failure due to an idiopathic dilated cardiomyopathy was diagnosed. He presented with sinus rhythm and a left bundle branch block pattern on the electrocardiogram. The echocardiogram showed a severely depressed left ventricular …
Máximo, Rivero-Ayerza +3 more
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Recent Progress in X-ray and Neutron Phase Imaging with Gratings
Quantum Beam Science, 2020 Under the JST-ERATO project in progress to develop X-ray and neutron phase-imaging methods together, recent achievements have been selected and reviewed after describing the merit and the principle of the phase imaging method.
Atsushi Momose +6 more
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Biosensors, 2021 Guided-mode resonance (GMR) sensors are widely used as biosensors with the advantages of simple structure, easy detection schemes, high efficiency, and narrow linewidth. However, their applications are limited by their relatively low sensitivity (
Chengrui Zhang +5 more
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Fabrication of X-ray Gratings for Interferometric Imaging by Conformal Seedless Gold Electroplating
Micromachines, 2021 We present a method to produce small pitch gratings for X-ray interferometric imaging applications, allowing the phase sensitivity to be increased and/or the length of the laboratory setup to be minimized.
Konstantins Jefimovs +7 more
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Dataset for SERS Plasmonic Array: Width, Spacing, and Thin Film Oxide Thickness Optimization
Data, 2018 Surface-enhanced Raman spectroscopy (SERS) improves the scope and power of Raman spectroscopy by taking advantage of plasmonic nanostructures, which have the potential to enhance Raman signal strength by several orders of magnitude, which can allow for ...
Christopher M. Klenke +5 more
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Aptamer Functionalized Lipid Multilayer Gratings for Label-Free Analyte Detection
Nanomaterials, 2020 Lipid multilayer gratings are promising optical biosensor elements that are capable of transducing analyte binding events into changes in an optical signal.
Plengchart Prommapan +4 more
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Binary Amplitude Reflection Gratings for X-ray Shearing and Hartmann Wavefront Sensors
Sensors, 2021 New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics.
Kenneth A. Goldberg +2 more
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