Results 11 to 20 of about 55,400 (265)

A processing method for rough cutting hourglass worm on general NC lathe

open access: yesJournal 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
doaj   +1 more source

Performance Analysis of an Experimental Linear Encoder’s Reading Head under Different Mounting and Dynamic Conditions

open access: yesEnergies, 2022
The performance of an optical linear encoder is described and evaluated by certain parameters such as its resolution, accuracy and repeatability. The best encoder for a particular application, just like other sensors, is usually selected according these ...
Donatas Gurauskis   +6 more
doaj   +1 more source

Miniaturized Optical Encoder with Micro Structured Encoder Disc

open access: yesApplied Sciences, 2019
A novel optical incremental and absolute encoder based on an optical application-specific integrated circuit (opto-ASIC) and an encoder disc carrying micro manufactured structures is presented.
Jonathan Seybold   +6 more
doaj   +1 more source

Phenomenon of Electromagnetic Field Resonance in Metal and Dielectric Gratings and Its Possible Practical Applications

open access: yesCondensed Matter, 2020
Calculations of the field distribution in the structure of the dielectric substrate/buffer layer/volume phase grating/analyzed medium were performed.
Stefano Bellucci   +3 more
doaj   +1 more source

Technology Maturation Efforts for the Next Generation of Grating Spectrometer Hyperspectral Infrared Sounders

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
As we look forward to the next generation of hyperspectral infrared (IR) atmospheric sounders, grating spectrometers hold promise for improved performance (e.g., horizontal and spectral resolutions) and more rapid revisit while reducing the size and ...
Thomas S. Pagano   +4 more
doaj   +1 more source

Nano-Focusing and Leveling System Based on Improved Phase Analysis

open access: yesIEEE Photonics Journal, 2016
A nano-focusing and leveling system (FLS) based on improved phase analysis is proposed to measure the wafer height in lithography. Different from traditional methods, this paper applies a grating-based mark to conduct the measurement according to the ...
Yan Tang   +5 more
doaj   +1 more source

Laser Direct Writing of Silver Clusters‐Based Subwavelength Periodic Structures Embedded in Mid‐Infrared Gallo‐Germanate Glass

open access: yesAdvanced Photonics Research, 2022
The direct laser writing (DLW) using femtosecond lasers allows for the inscription of 3D microstructures embedded inside optical materials. Based solely on the silver ions photochemistry, the DLW in silver‐containing glasses enables to locally induce ...
Théo Guérineau   +7 more
doaj   +1 more source

High Performance Dual-Core D-Shaped PCF Refractive Index Sensor Coated with Gold Grating

open access: yesPhotonics, 2023
In this study, a dual−core D-shaped photonic crystal fiber (PCF) surface plasmon resonance sensor coated with gold grating is designed and analyzed using the finite-element method (FEM).
Yu Ying   +6 more
doaj   +1 more source

A Mid-Infrared Narrowband Absorber Based on a Subwavelength Fine-Structured Silicon–Gold Metagrating

open access: yesApplied Sciences, 2019
A subwavelength fine-structured silicon−gold metagrating was designed for realizing mid-infrared (mid-IR) narrowband absorbers. The metagrating consisted of a silicon grating on the stack of a gold film and a quartz substrate.
Xin He   +4 more
doaj   +1 more source

Dual Tunable Electromagnetically Induced Transparency Based on a Grating-Assisted Double-Layer Graphene Hybrid Structure at Terahertz Frequencies

open access: yesNanomaterials, 2022
We propose a graphene plasmonic structure by applying two graphene layers mingled with a thin gold layer in a silicon grating. By utilizing the finite-difference time-domain (FDTD) method, we investigate the optical response of the system, and observe ...
Xu Zhong   +7 more
doaj   +1 more source

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