Results 11 to 20 of about 151,823 (305)

Timing Planning Knowledge Representation for Micro Assembly Based on Ontology

open access: yesIEEE Access
Micro assembly is a focal point in assembly research because of its high assembly accuracy requirements and high assembly difficulty. Current micro assembly techniques focus on precision and consistency, yet face a significant efficiency obstacle due to ...
Jiahui Qian, Yigang Wang, Zhijing Zhang
doaj   +2 more sources

The role of even longitudinal electric field distribution in optimizing carrier transport efficiency of field-effect transistors

open access: yesResults in Physics, 2022
Longitudinal electric field (EL) optimization is a frequent method to enhance the carrier transport efficiency of semiconductor devices including field-effect transistors (FETs).
Maolin Zhang   +8 more
doaj   +1 more source

STAR‐RIS‐assisted scheme for enhancing physical layer security in NOMA systems

open access: yesIET Communications, 2022
Simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR‐RIS) is capable of achieving full coverage area compared with conventional reflection‐only reconfigurable intelligent surface (RIS).
Shu Xu   +4 more
doaj   +1 more source

A microwave detector based on spoof surface plasmon polaritons structure

open access: yesAIP Advances, 2021
In this paper, a Schottky diode detector based on spoof surface plasmon polariton (SPP) structure is reported. The detector consists of an input matching network, a Schottky diode, and an output filtering network.
Leilei Liu, Dingwei Jiang
doaj   +1 more source

Automatic assembly of micro-miniature parts based on coaxial alignment and ORB feature matching [PDF]

open access: yesMATEC Web of Conferences, 2021
Aiming at the problems of low manual assembly process efficiency and low yield of micro-miniature parts. A vision system based on ORB feature matching for fast coaxial alignment of micro-miniature parts automated assembly is proposed.
Shi Mingkuan   +4 more
doaj   +1 more source

A Product Development Approach in The Field of Micro-Assembly with Emphasis on Conceptual Design

open access: yesApplied Sciences, 2019
Faster product lifecycles make long-term investments in machines for micro assembly riskier. Therefore, reconfigurable manufacturing systems gain more and more attention.
Christoph Gielisch   +3 more
doaj   +1 more source

Hybrid universal handling systems for micro component assembly

open access: yes, 2022
S.1855-1860Highly sophisticated machining techniques make it possible to manufacture ultra precise micro components as small as 100 mu. These micro components are normally mounted onto larger macroscopic components before being incorporated into, e.g ...
Brecher, Christian   +2 more
core   +1 more source

Simulation Study of the Double-Gate Tunnel Field-Effect Transistor with Step Channel Thickness

open access: yesNanoscale Research Letters, 2020
Double-gate tunnel field-effect transistor (DG TFET) is expected to extend the limitations of leakage current and subthreshold slope. However, it also suffers from the ambipolar behavior with the symmetrical source/drain architecture.
Maolin Zhang   +4 more
doaj   +1 more source

Toolchain concept for the automated assembly of micro-optical systems

open access: yes, 2022
Paper 91300SIn micro-optical assembly, the mastering of the steps of passive and active alignment, bonding, and part feeding as well as their interdependencies are crucial to the success of an automation solution. Process development is therefore complex
Brecher, Christian   +2 more
core   +1 more source

Sensing performance of β-Ga2O3 metal–semiconductor-metal deep ultraviolet photodetectors with refractory TiW electrodes at high temperatures

open access: yesResults in Physics, 2023
Given the critical impact of high-temperature environments on the detection performance and stability of deep ultraviolet (DUV) photonic devices, especially in urgent demands from fields including high-temperature industries and flame detection, the ...
Maolin Zhang   +6 more
doaj   +1 more source

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