Results 11 to 20 of about 1,908,843 (312)

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

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

Micro-Vision Based High-Precision Space Assembly Approach for Trans-Scale Micro-Device: The CFTA Example

open access: yesSensors, 2023
For assembly of trans-scale micro-device capsule fill tube assemblies (CFTA) for inertial confinement fusion (ICF) targets, a high-precision space assembly approach based on micro-vision is proposed in this paper. The approach consists of three modules: (
Juan Zhang, Xi Dai, Wenrong Wu, Kai Du
doaj   +1 more source

A Methodology for the Selection of Micro-Assembly Techniques [PDF]

open access: yesAmerican Journal of Engineering and Applied Sciences, 2010
Problem statement: The study addressed the problem of selecting the appropriate microassembly techniques according to the micro-part features. Actually, in the micro-domain, the choice of the correct assembly technique is highly dependent on the micro-part characteristics such as shape, geometry and material.
ANTONELLI, DARIO   +3 more
openaire   +3 more sources

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

A Volume-Tuning Capillary Gripper That Enhances Handling Capabilities and Enables Testing of Micro-Components

open access: yesMicromachines, 2022
Capillary forces are shown to be extremely effective for micro-assembly and pick-and-place processes, especially for their ability to self-align the handled objects.
Adam Chafaï   +2 more
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

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