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Numerical and Experimental Analysis of Dual-Beam Laser Polishing Additive Manufacturing Ti6Al4V [PDF]

open access: yesMicromachines, 2023
Laser polishing is an emerging efficient technique to remove surface asperity without polluting the environment. However, the insufficient understanding of the mechanism of laser polishing has limited its practical application in industry. In this study,
Junyong Zeng   +6 more
doaj   +2 more sources

A Wideband Millimeter-Wave Dual-Beam Dielectric Resonator Antenna with Substrate Integration Capability [PDF]

open access: yesMicromachines
A wideband dual-beam dielectric resonator antenna (DRA) with substrate integration capability was proposed for millimeter-wave (mm-wave) applications. The four rows of air vias along the x-direction and two extended rectangular patches could shift the ...
Jin Shi   +4 more
doaj   +2 more sources

Dual-beam X-ray nano-holotomography. [PDF]

open access: yesJ Synchrotron Radiat
Nanotomography with hard X-rays is a widely used technique for high-resolution imaging, providing insights into the structure and composition of various materials. In recent years, tomographic approaches based on simultaneous illuminations of the same sample region from different angles by multiple beams have been developed at micrometre image ...
Flenner S   +4 more
europepmc   +5 more sources

Dual Frequency Multi-Functional via-Less Leaky Wave Antenna Featuring Enhanced Frequency Sensitivity and Dual Beam Scanning Capability [PDF]

open access: goldIEEE Access
In this paper we present a dual band low cross-polarized periodic microstrip leaky wave antenna (LWA) based on the multi mode resonator concept (MMR).
Basudev Majumder   +3 more
doaj   +2 more sources

A dual beam photonic wavelength refernce

open access: yesMeasurement: Sensors, 2021
We present operation of a photonically integrated wavelength reference at 780 nm using a dual beam geometry. The dual beams are generated by a pair of extreme mode converting grating beam expanders that generate a pair of overlapped, counter-propagating ...
Matthew Hummon   +7 more
doaj   +2 more sources

Bandwidth and power enhancement in the MEMS-based piezoelectric energy harvester using magnetic tip mass [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
In this paper, the performance and frequency bandwidth of the piezoelectric energy harvester (PZEH) is improved by introducing two permanent magnets attached to the proof mass of a dual beam structure.
Ashutosh Anand   +2 more
doaj   +1 more source

E‌V‌A‌L‌U‌A‌T‌I‌O‌N O‌F D‌U‌A‌L S‌Y‌S‌T‌E‌M‌S W‌I‌T‌H M‌O‌M‌E‌N‌T-R‌E‌S‌I‌S‌T‌I‌N‌G F‌R‌A‌M‌E A‌N‌D S‌H‌E‌A‌R L‌I‌N‌K F‌R‌A‌M‌E \ [PDF]

open access: yesمهندسی عمران شریف, 2022
This paper puts forward a new dual system to dissipate energy and presents its numerical studies. Though moment-resisting frames have a good ductility performance, they suffer low stiffness; as a matter of fact, engineers try to increase the stiffness by
F. Mahmoudi, A.R. Rahai, F. Hatami
doaj   +1 more source

Highly Efficient Dual-Beam Frequency Scanning Based on SSPPs With Parasitic Patch Array

open access: yesFrontiers in Physics, 2022
A leaky-wave antenna (LWA) realizes radiation of travelling wave along guiding structures. Periodic modulation is an effective approach to turn non-radiating modes into radiating modes.
Bai Cao Pan   +6 more
doaj   +1 more source

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