Results 31 to 40 of about 1,042,373 (295)

Reconstruction of plasma density profiles by measuring spectra of radiation emitted from oscillating plasma dipoles [PDF]

open access: yes, 2020
We suggest a new method for characterising non-uniform density distributions of plasma by measuring the spectra of radiation emitted from a localised plasma dipole oscillator excited by colliding electromagnetic pulses.
Chung, Moses   +10 more
core   +2 more sources

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

open access: yesIEEE Open Journal of Antennas and Propagation
In this paper, a wide-angle linearly scanning leaky-wave antenna (LWA) based on spoof surface plasmon polaritons (SSPPs) with a very high scanning rate is proposed. A sine curve period is introduced to construct the SSPPs transmission line in the form of
Yue Wang   +7 more
doaj   +1 more source

Local Dielectric Measurements of BaTiO3-CoFe2O4 Nano-composites Through Microwave Microscopy

open access: yes, 2006
We report on linear and non-linear dielectric property measurements of BaTiO3 - CoFe2O4 (BTO-CFO) ferroelectro-magnetic nano-composites and pure BaTiO3 and CoFe2O4 samples with Scanning Near Field Microwave Microscopy.
Altshuler   +7 more
core   +1 more source

Mapping the Dirac point in gated bilayer graphene

open access: yes, 2009
We have performed low temperature scanning tunneling spectroscopy measurements on exfoliated bilayer graphene on SiO2. By varying the back gate voltage we observed a linear shift of the Dirac point and an opening of a band gap due to the perpendicular ...
Bao, W.   +4 more
core   +1 more source

Applications of Linear Scanning Magnetostrictive Transducers (MST) for Finding Hard-to-Detect Anomalies in Structural Components

open access: yesResearch and Review Journal of Nondestructive Testing, 2023
Guided wave testing is now a widely accepted method for detection of structural damage in many different types of components, from pipelines to pressure vessels to tanks.
Sergey Vinogradov   +3 more
doaj   +1 more source

Use of Subarrays in Linear Array for Improving Wide Angular Scanning Performance

open access: yesIEEE Access, 2019
The scanning performance of wide-angular scanning linear arrays is primarily degraded by the limited angular profile of the employed elements' patterns.
Fannush S. Akbar   +3 more
doaj   +1 more source

A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder

open access: yesSensors, 2023
Accuracy becomes progressively important in the wake of development in advanced industrial equipment. A key position sensor to such a quest is the optical linear encoder.
Xinji Lu   +3 more
doaj   +1 more source

Modal shape measurement of fiber-reinforced composite plate with high efficiency and precision based on laser linear scanning method

open access: yesMeasurement + Control, 2018
The laser linear scanning method is proposed to measure the modal shape of fiber-reinforced composite thin plate with high efficiency and precision.
Hui Li   +4 more
doaj   +1 more source

Novel Genetic Risk Factor Identified for L‐Asparaginase‐Induced Pancreatitis in Pediatric Patients With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background L‐asparaginase is a critical component in treatment protocols for pediatric acute lymphoblastic leukemia. Acute pancreatitis reactions can necessitate delays and, in some cases, discontinuation of L‐asparaginase, which compromises outcomes.
Edward J. Raack   +39 more
wiley   +1 more source

Linear Antenna Array Sectorized Beam Scanning Approaches Using Element Position Perturbation in the Azimuth Plane

open access: yesSensors, 2023
In this paper, two sector beam scanning approaches (BSAs) based on element position perturbations (EPPs) in the azimuth plane are introduced. In EPP-BSA, the elements’ excitations are kept constant and the elements’ positions in the direction normal to ...
Safaa I. Abd Elrahman   +3 more
doaj   +1 more source

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