Results 41 to 50 of about 56,935 (169)

Fabrication of Tapered 3D Microstructure Arrays Using Dual-Exposure Lithography (DEL)

open access: yesMicromachines, 2020
Three-dimensional (3D) microstructure arrays (MSAs) have been widely used in material science and biomedical applications by providing superhydrophobic surfaces, cell-interactive topography, and optical diffraction.
Venkatakrishnan Rengarajan   +2 more
doaj   +1 more source

Two‐Dimensional Angular Bandwidth Broadening of Metasurface Grating

open access: yesAdvanced Photonics Research, 2022
Waveguide‐type near‐eye displays (NED) have attracted increasing attention in the market of augmented reality (AR) and virtual reality (VR) devices, thanks to their outstanding performance within ultra‐compact size.
Chulsoo Choi   +4 more
doaj   +1 more source

Diffraction at a Curved Grating: Approximation by an Infinite Plane Grating

open access: yesJournal of Mathematical Analysis and Applications, 1996
The effect of curvature of a cylindrical grating on the diffraction of TE and TM polarized electromagnetic plane waves is considered. For every ratio of the wavelength \(\lambda\) to the period \(d\) a local approximation is established in the planar field by a plane infinite grating, when the radius \(R\) of the circular grating goes to infinity ...
Abboud, Toufic, Ammari, Habib
openaire   +2 more sources

Phase retrieval between overlapping orders in coherent Fourier scatterometry using scanning [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
Non-interferometric phase retrieval from the intensity measurements in Coherent Fourier Scatterometry (CFS) is presented using a scanning focused spot.
Kumar N.   +4 more
doaj   +1 more source

Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector

open access: yesNanomaterials, 2020
Utilizing Bragg surface plasmon polaritons (SPPs) on metal nanostructures for the use in optical devices has been intensively investigated in recent years. Here, we demonstrate the integration of nanostructured metal electrodes into an ITO-free thin film
Michael J. Haslinger   +7 more
doaj   +1 more source

Temperature Monitoring in PIC Surface

open access: yesPhotonics
In this work we present the extended work of the previously proposed scheme for in-PIC temperature monitoring. This can be used in any photonic integrated circuitry platform, allowing simplified temperature monitoring and improved independence of the ...
Sushma Pandey   +2 more
doaj   +1 more source

Dosimetric study of the medical Agility grating system in radiotherapy of orbital lymphoma

open access: yesPrecision Radiation Oncology, 2019
Objective The spatial location of the orbital lymphoma target area is special; improving the quality of the orbital lymphoma plan and protecting the eye are important focus areas for doctors and physicists.
Shi Huifeng   +4 more
doaj   +1 more source

A Chirped Subwavelength Grating With Both Reflection and Transmission Focusing

open access: yesIEEE Photonics Journal, 2013
A planar lens composed of a chirped subwavelength grating (CSG) structure with high numerical aperture (NA) was designed and analyzed in this paper. The reflectivity, transmission, and phase were calibrated as a function of the grating dimension using ...
Xiaomin Lv   +7 more
doaj   +1 more source

Guided-Mode Resonance Grating with Self-Assembled Silver Nanoparticles for Surface-Enhanced Raman Scattering Spectroscopy

open access: yesPhotonics, 2014
We designed and fabricated guided-mode resonance (GMR) gratings on indium-tin-oxide (ITO) thin film to generate a significantly enhanced local electric field for surface-enhanced Raman scattering (SERS) spectroscopy.
Jing Yang   +7 more
doaj   +1 more source

Deep neural networks for inverse design of multimode integrated gratings with simultaneous amplitude and phase control

open access: yesNanophotonics
We present a photonic mode converter based on a grating structure, modeled and inversely designed by deep neural networks. The neural network maps the physical parameters of the grating to the grating responses, i.e., complex scattering parameters ...
Mohajer Hejazi Ali, Ginis Vincent
doaj   +1 more source

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