Results 11 to 20 of about 2,748,623 (319)

Study on the Thermal Environment Inside a Fully-Enclosed Subway Noise Barrier [PDF]

open access: yesE3S Web of Conferences, 2020
The thermal environment inside a fully-enclosed subway noise barrier shall be designed according to underground section tunnel standards. This article constructs a model using practical examples, simulates calculations on fully-enclosed noise barrier ...
Liu Lei   +3 more
doaj   +1 more source

Obstacles Affect Perceptions of Egocentric Distances in Virtual Environments

open access: yesFrontiers in Virtual Reality, 2021
Distance perception in humans can be affected by oculomotor and optical cues and a person’s action capability in a given environment, known as action-specific effects.
Daisuke Mine   +2 more
doaj   +1 more source

Design and Performance Analysis of Three Phase Line Start Synchronous Reluctance Motor Using Finite Element Analysis

open access: yesU.Porto Journal of Engineering, 2023
Three-phase Induction Motors (TPIM) are popular in industrial applications due to their numerous advantages. However, TPIM has comparatively lower efficiency than modern motor technologies like permanent magnet synchronous motor(PMSM), synchronous ...
Mandar Chaudhari, Anandita Chowdhury
doaj   +1 more source

Above-barrier resonances: analytical expressions for energy and width [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2002
Summary: We construct a smooth realistic barrier potential that can generate resonances above the top of the barrier provided a parameter \(\lambda\) controlling the flatness of the barrier is larger than the critical value \(\lambda= \sqrt 2\). The energies and widths of resonances are expressed analytically in terms of the characteristics of the ...
Sahu, B.   +2 more
openaire   +1 more source

Investigation on a novel SiC Schottky barrier diode hydrogen sensor with trench-insulator structure

open access: yesMaterials Research Express, 2021
A novel SiC Schottky barrier diode (SBD) hydrogen gas sensor with trench-insulator structure was proposed in this paper. A physical model is built for this hydrogen sensor based on 4H-SiC SBD thermionic emission theory, tunneling effect of carriers ...
Yonglan Qi   +4 more
doaj   +1 more source

Multiple Fano Resonances in Dynamic Resonant Tunneling Processes

open access: yesApplied Sciences, 2023
The existence of Fano resonances in dynamic resonant tunneling (RT) systems has been investigated. Fano resonances are characterized by the appearance of a 100% reflection coefficient in proximity to a high transmission coefficient.
Gilad Zangwill, Er’el Granot
doaj   +1 more source

Theoretical study of electronic properties of resonant tunneling diodes based on double and triple AlGaAs barriers

open access: yesResults in Physics, 2020
In this paper, we investigated the effect of the central AlGaAs barrier width Lb2 in a resonant tunneling diode (RTD) composed by triple barriers on the current-voltage characteristics, and electronic density of free carriers.
Shaffa Almansour
doaj   +1 more source

Characterization of external potential for field emission resonances and its applications on nanometer-scale measurements

open access: yesNew Journal of Physics, 2018
The form of the external potential (FEP) for generating field emission resonance (FER) in a scanning tunneling microscopy (STM) junction is usually assumed to be triangular.
Shin-Ming Lu   +5 more
doaj   +1 more source

Comparison of a direct measure of barrier crossing times with indirect measures such as the Larmor time

open access: yesNew Journal of Physics, 2021
Different approaches for considering barrier crossing times are analyzed, with special emphasis on recent experiments which attempt to measure what is commonly referred to as the Larmor tunneling time.
Tom Rivlin, Eli Pollak, Randall S Dumont
doaj   +1 more source

Supercontinuum Generation from Airy-Gaussian Pulses in Photonic Crystal Fiber with Three Zero-Dispersion Points

open access: yesPhotonics, 2023
The supercontinuum generation and manipulation of Airy-Gaussian pulses in a photonic crystal fiber with three zero-dispersion points are studied using the split-step Fourier method. Firstly, the spectral evolution of Airy-Gaussian pulses in four photonic
Xinyi Yu   +6 more
doaj   +1 more source

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