Materials Literature
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Recently, the applications in biotechnological and medical fields using nonequilbrium atmospheric pressure-plasmas (NEAPPs) have been intensively studied. The inactivation of microorganisms using NEAPPs has been attracted much attention due to the low temperature processing and high speed treatment. We inactivated Pen…
We have explored a novel technique for producing transparent volumetric nanocrystalline sitall by means of intensive plastic deformation. This material is intended to be used for components of fiber optic devices, including various applications in all-optical networks. We have examined properties of the material exper…
Summary form only given. ZnO based nanomaterials attract tremendous interest for applications in optoelectronics and sensors. Among the various chemical and physical deposition methods, laser produced plasma enable the deposition at relatively low or room temperature because of the capability to produce vapor/species…
The paper is devoted to correction of wavefront distortion in large aperture YAG:Nd active elements in oblique geometry by means of conformal correctors.
Tris(8-hydroxyquinoline) aluminum (Alq3) powders were synthesized under controlled 8-Hq partial pressure. It was shown that the P8-Hqincrease resulted to changes in the photoluminescence characteristics and the life-time of the Alq3phosphor.
Summary form only given. It has been shown that field emission is an important mechanism in emerging microplasma devices. Ions formed by electron impact ionization that are very close to the cathode may bring significant enhancement to the emission current by both resonant and non-resonant processes. In this work, we…
In this study, we investigated the influences of potassium fluoride(KF) addition on the surface characteristics of plasma electrolytic oxidation(PEO) coating produced on Al alloy. The PEO of marine grade Al alloy(5083 grade) was conducted in KOH 1g/L solution adding different concentrations of KF(0, 1 and 2 g/L) under…
Sandia National Laboratories and General Atomics are pleased to respond to the Advanced Research Projects Agency-Energy (ARPA-e)’s request for information on innovative developments that may overcome various current reactor-technology limitations. The RFI is particularly interested in innovations that enable ultra-saf…
The evolution of Cr4+, Cr3+and Cr2+contents in Cr:Mg2SiO4crystals during those prolonged high-temperature oxidizing annealing have been studied. The concentration of Cr4+increases by factor of 1, 5-2, 5, whereas the parasitic Cr2+ions practically disappear during such annealing. Therefore this post-growth treatment of…
Measurements results of spectra of permittivity, permeability, reflection, transmission and absorption coefficients of polymer composite with nanosized filler are presented. Material absorbs electromagnetic waves intensively at superhigh and extremely high frequencies.
We show that nanoscale metal contacts (constrictions) can serve as an efficient sources of plasmons for future nanoplasmonic integrated circuits. Electron, passing ballistically through nanoscale contact, can emit plasmons with the probability ~0.1 due to multiple collisions with walls of the constriction.
Extension of the 2-flux Kubelka-Munk approach to a 2D radiative transfer problem was studied. New transport equation of the 4-th order for the case of orthogonal-scattering approximation and its strict analytical solution were derived.
A method for measuring leakage current in LDPE insulated miniature cables containing volatile additives is presented. It is shown that with the presented method the volatiles are sufficiently contained in the test object even at temperatures up to 90 °C. This is achieved through non permeable encapsulation around the…
Laser cladding technology was used to conduct experiments on production of wear-resistant coatings with additive nanoparticles of refractory metals (WC, TaC). Mechanical testing of coating abrasion was made using Brinell-Howarth method. The obtained data was compared with wear-resistance of commercial powder containin…
Graphene is leading the charge in the drive to develop the next generation of electronics and optoelectronics. The applications for which it is ideally suited as a 2D conductor have been complemented by further domains where it can function as a semiconductor or a magnetic metamaterial. These, however, depend on the a…
A new negative refractive index (NRI) metamaterial unit cell is presented in this study. The negative refractive index property is being displayed by the unit cell of metamaterial in the four distinct microwave frequency bands. Finite integration technique was adopted to evaluate the property of the material. More tha…
A new and radically simplified construction of the vertical-cavity surface-emitting laser (VCSEL) with monolithic high-index contrast grating will be investigated. Instead of hundreds of epitaxial layers as in conventional VCSELs, the proposed design consists of a thin active zone capturing and recombining the carrier…
We investigated the influences of Ag nanoparticle (NP) arrays and surface nanohole (NH) patterns on the optical characteristics of 10-μm-thick c-Si wafers using finite-difference time-domain (FDTD) simulations. In particular, we comparatively studied the plasmonic effects of both monomer arrays (MA) and heptamer array…
In the antiferromagnetic single crystal of iron borate the effect of electromagnetic generation of the sound of transverse polarization is studied. In an external magnetic field the acoustic birefringence is detected. Data on the magnitude of magnetoelastic gap are obtained.
A fully automated remote control system for the gas filling system has been developed for the ESTHER shock-tube using technologies and software tools, e.g. PLC, EPICS, CS-STUDIO, similar to the ITER CODAC I&C architecture for slow control. The system also comprises also a fast data acquisition for the combustion chamb…