Results 21 to 30 of about 272,023 (314)

High-Sensitivity H2 and CH4 SAW Sensors with Carbon Nanowalls and Improvement in Their Performance after Plasma Treatment

open access: yesChemosensors, 2023
We have developed surface acoustic wave (SAW) sensors with high sensitivity and a reversible response at room temperature (RT). The sensitive area of the sensor was prepared from vertically aligned graphene sheets, like carbon nanowalls (CNWs), which ...
Sorin Vizireanu   +4 more
doaj   +1 more source

Quasi-phase-matched laser wakefield acceleration of electrons in an axially density-modulated plasma channel

open access: yesScientific Reports, 2021
Quasi-phase matching in corrugated plasma channels has been proposed as a way to overcome the dephasing limitation in laser wakefield accelerators.
M. Sedaghat, S. Barzegar, A. R. Niknam
doaj   +1 more source

Design and fabrication of multi-layers antireflection coating consisting of MgF2 and SiO2 [PDF]

open access: yesProgress in Physics of Applied Materials, 2023
In this research, MgF2 and SiO2 thin films were prepared by the magnetron sputtering method on glass and ITO substrates. The crystal structure, morphology, and antireflection performance of the coatings were characterized using X-ray diffraction (XRD ...
Hassan Salmaniannezhad   +5 more
doaj   +1 more source

VUV/EUV ionising radiation and atoms and ions: dual laser plasma investigations [PDF]

open access: yes, 2004
The interaction of ionising radiation with atoms and ions is a key fundamental process. This report concentrates on studies of photoexcitation/photoionisation using laser-produced plasmas as continuum sources and synchronised laser plasma plumes to ...
Costello, John T.   +3 more
core   +1 more source

Laser plasma in a magnetic field [PDF]

open access: yesReview of Scientific Instruments, 2010
Laser ion source (LIS) is a candidate among various heavy ion sources. A high density plasma produced by Nd:yttrium aluminum garnet laser with drift velocity realizes high current and high charge state ion beams. In order to obtain higher beam current, we made experiments using the LIS with a magnetic field by which a confinement effect can make higher
Kondo,K.   +4 more
openaire   +2 more sources

The Influence of the Structural and Morphological Properties of WO3 Thin Films Obtained by PLD on the Photoelectrochemical Water-Splitting Reaction Efficiency

open access: yesNanomaterials, 2021
Due to its physical and chemical properties, the n-type tungsten oxide (WO3) semiconductor is a suitable photoanode for water decomposition reaction. The responses of the photoelectrochemical PEC water-splitting properties as an effect of structural and ...
Florin Andrei   +9 more
doaj   +1 more source

Measurement of the sound velocity of shock compressed water

open access: yesScientific Reports, 2021
The sound velocities of water in the Hugoniot states are investigated by laser shock compression of precompressed water in a diamond anvil cell. The obtained sound velocities in the off-Hugoniot region of liquid water at precompressed conditions are used
Hua Shu   +13 more
doaj   +1 more source

Hydrogen atom in a laser-plasma [PDF]

open access: yesLaser Physics Letters, 2016
We scrutinize the behaviour of hydrogen atom's eigenvalues in a quantum plasma as it interacts with electric field directed along $θ=π$ and exposed to linearly polarized intense laser field radiation. Using the Kramers-Henneberger (KH) unitary transformation, which is semiclassical counterpart of the Block-Nordsieck transformation in the quantized ...
Falaye, Babatunde James   +4 more
openaire   +2 more sources

Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy. [PDF]

open access: yes, 2011
Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bioceramic samples. The relationship between sample hardness and LIBS plasma properties was investigated, with comparison to conventional Vickers hardness measurements.
Moser, D.   +23 more
core   +1 more source

Use of X-ray Computed Tomography for Assessing Defects in Ti Grade 5 Parts Produced by Laser Melting Deposition

open access: yesMetals, 2020
Laser Melting Deposition (LMD) is a metal printing technique that allows for the manufacturing of large objects by Directed Energy Deposition. Due to its versatility in variation of parameters, the possibility to use two or more materials, to create ...
Diana Chioibasu   +8 more
doaj   +1 more source

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