Results 31 to 40 of about 282,349 (73)

Optimized thermoelectric performance of the n-type half-Heusler material TiNiSn by substitution and addition of Mn

open access: yesAIP Advances, 2017
Alloys based on the half-Heusler compound TiNiSn with the addition of Mn or with a substitution of Ti by Mn are investigated as high-temperature thermoelectric materials.
Enkhtaivan Lkhagvasuren   +6 more
doaj   +1 more source

The thin film bulk acoustic wave resonator based on single-crystalline 43○Y-cut lithium niobate thin films

open access: yesAIP Advances, 2020
43°Y-cut lithium niobate (LiNbO3, LN) single-crystalline thin films, which are integrated with two types of Bragg reflectors of W/SiO2 and Mo/SiO2, respectively, are fabricated by means of the crystal-ion-slicing technique.
Xiaoyuan Bai   +8 more
doaj   +1 more source

Structural, elastic, thermoelastic and electronic properties of M2O3 (M = Cr, Fe, Al) compounds: Experimental and theoretical study

open access: yesResults in Physics, 2019
We derived the chemical compositions and the micro hardness of the two studied steels Fe20Mn5Cr and Fe9S28Mn. The contamination of these two compounds by oxygen gives the series M2O3 (M = Fe, Cr, Al). Rhombohedral crystal structure of these compounds was
T. Chihi   +3 more
doaj  

Band gaps in phononic crystals: Generation mechanisms and interaction effects

open access: yesAIP Advances, 2011
A wide range of mesoscopic phononic materials can exhibit frequency bands where transmission is forbidden, i.e. band gaps. Three different mechanisms for their origin can be distinguished, namely Bragg, hybridization and weak elastic coupling effects ...
C. Croënne   +3 more
doaj   +1 more source

Micromagnetic simulation of the temperature dependence of the switching energy barrier using string method assuming sidewall damages in perpendicular magnetized magnetic tunnel junctions

open access: yesAIP Advances, 2020
The influence of magnetic damages at the sidewall of perpendicular magnetic tunnel junctions (p-MTJs), which are the core devices of spin-transfer-torque magnetoresistive random-access memory (STT-MRAM), is discussed based on the thermal stability factor,
Hiroshi Naganuma   +3 more
doaj   +1 more source

Doping the bismuth into the host’s Cu2ZnSnS4 semiconductor as a novel material for thin film solar cell

open access: yesResults in Physics, 2019
In this report for the first time, the Cu2Zn1-xBixSnS4 (CZBiTS) semiconductor at (0 ≤ x ≤ 1) has been synthesized using the solvothermal and spin coating methods.
Hussein Hussein, Ahmad Yazdani
doaj  

Taming electromagnetic metamaterials for isotropic perfect absorbers

open access: yesAIP Advances, 2015
Conventional metamaterial absorbers, which consist of a dielectric spacer sandwiched between metamaterial resonators and a metallic ground plane, have been inherently anisotropic.
Doan Tung Anh   +7 more
doaj   +1 more source

Fast heart rate extraction using CW Doppler radar with interpolated discrete Fourier transform algorithm

open access: yesAIP Advances, 2020
Doppler radar-based fast heart rate (HR) extraction has great application potential in stress and emotion recognition, anxiety treatments, etc.
Zi-Kai Yang   +4 more
doaj   +1 more source

Synthesis of cobalt-rich alloys with high saturation magnetization: A novel synthetic approach by hydrazine reduction method

open access: yesResults in Physics, 2019
Cobalt-rich alloys of various compositions (Co33Fe33Ni33, Co40Fe40Ni20, Co50Fe25Ni25 and Co60Fe20Ni20) were synthesized from their respective precursor salts using a novel hydrazine reduction method.
G. Srinivas Reddy   +3 more
doaj  

Study on W-band sheet-beam traveling-wave tube based on flat-roofed sine waveguide

open access: yesAIP Advances, 2018
A W-band sheet electron beam (SEB) traveling-wave tube (TWT) based on flat-roofed sine waveguide slow-wave structure (FRSWG-SWS) is proposed. The sine wave of the metal grating is replaced by a flat-roofed sine wave around the electron beam tunnel.
Shuanzhu Fang   +10 more
doaj   +1 more source

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