Materials Literature
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We report energy transfer (ET) from two dyes: Alexa Fluor 514 (AF514) and Alexa Fluor 532 (AF532) to gold nanoparticles (AuNPs) of three different sizes (10, 30, and 53 nm) employing steady-state and time-resolved fluorescence measurements. The results show that the fluorescence intensity and fluorescence lifetimes of…
Simultaneous saturation of the metallic surface with sulphur, nitrogen and carbon � named sulphonitrocarburizing (SNC) process - may be carried out in a multitude of variants, differ in media state of aggregation which provide the elements in native state, or differ in phase composition. The most commonly used media i…
A surface magneto-electric effect in hybrid multilayer systems consisting of antiferromagnet (Cr2O3) and ferromagnet films is considered using the Landau theory. We show that the antiferromagnetic order parameter in Cr2O3 film can be switched without applying an external magnetic field. Only an electric field is neede…
We present a monolithic hybrid visible-light imager composed of an amorphous selenium (a-Se) photoconductor thin film integrated on a CMOS active pixel sensor (APS) array readout integrated circuit. We achieve more than 14-dB signal-to-noise ratio under monochromatic light at an illuminance of 0.04 lux in one quadrant…
Using the Weeks-Chandler-Andersen separation scheme, we explored equilibrium properties of fully penetrable soft spheres with an attractive tail. When the radial distribution function of the reference system is computed by means of the integral equation theory using the hyper-netted-chain closure, this separation sche…
Abstract Bifunctional catalysis in zeolites possessing both Brønsted and Lewis acid sites offers unique opportunities to tailor shape selectivity and enhance catalyst performance. Here, we examine the impact of framework and extra‐framework gallium species on enriched aromatics production in zeolite ZSM‐5. We compare…
This paper proposes a fast and efficient technique for calculating the scattering from curved metasurfaces. Integral equations based on the extinction theorem in conjunction with the Floquet expansions of electromagnetic fields are used. The metasurface is modelled by the Generalized Sheet Transition Conditions (GSTCs…
A sub-wavelength polarization independent frequency selective surface (FSS) is presented for X-band shielding. The FSS unit cell constructed from a split ring slot on a circular conductive patch with symmetrical axis orientation angle of 45° that coupled to another identical one within a FR4 dielectric substrate to se…
For achieving more multiplexing degrees, a method to generate and multiplex dual-polarized electromagnetic waves carrying orbital angular momentum(OAM) by a single reflective metasurface is proposed in this paper. Base on this method, a dual- polarized reflective metasurface that can generate eight OAM beams combined…
A frequency selective surface (FSS) integrated with a dual-band dual-reflection antenna is designed. The FSS, as the secondary reflection surface of the antenna, has good reflection characteristics for incident electromagnetic waves working at the Ka-band, and has good transmission characteristics for X-band and lower…
In this paper, an ultrathin tri-functional metasurface with PIN diodes and varactors incorporated is proposed. By varying the DC bias voltages, the proposed reconfigurable metasurface can achieve switchable functionalities of perfect reflection, transmission and absorption. The simulation results are presented and the…
Abstract In a light-water reactor, during normal operating condition, the UO2 nuclear fuel pellets undergo fragmentation primarily due to presence of thermal stresses, fission gas development and pellet-clad mechanical interaction. Under Loss of Coolant Accident (LOCA) conditions, a portion of fuel fragments can freel…
Abstract The Chebyshev rational approximation method (CRAM) is an important numerical solution algorithm for the burnup equation. Since high complexity of nuclide depletion calculation, its outputs are almost impossible to predict accurately. Therefore, the traditional testing methods are inapplicable, even invalid. T…
Abstract Thermal-hydraulic experiments to help develop and qualify new fuel designs for advanced liquid metal cooled reactors could use reduced-size triangular pitch, 3 rods within a circular shroud. In such an arrangement, scalloping the shroud wall helps achieve lateral flow uniformity and high velocity, but at the…
Abstract Vessel penetrations are important features of both pressurized water reactors and boiling water reactors. The thermal and structural behaviour of instrumentation guide tubes (IGTs) and control rod guide tubes (CRGTs) during a severe accident is vital in the assessment of the structure integrity of the reactor…
Abstract The pore structure of hydrodemetallization catalysts plays a vital role in their lifetime and thus, on the process economy. In this investigation, a multi‐modal meso and macroporous alumina has been prepared by using aluminum alkoxides. To tune the alumina properties to the desired values, a systematic design…
The authors presented paper deals with experimental measurement and evaluation of nanomechanical properties of hard turned and grinded surfaces on the cross section specimens made of the 33NiCrMoV15 steel. 33NiCrMoV15 steel was selected to perform for all realized investigations. Even before the start of the experi-me…
Abstract The high enhancement factor (EF) of surface-enhanced Raman (SERS) probes is an important parameter for high-sensitivity Raman scattering measurement applied to environment control. In this article, we present a SERS probe based on silver nano-structures deposited on silica microsphere surfaces made by the las…
Abstract We successfully improved quality of tin oxide (SnO 2 ) films formed on m -plane sapphire substrates by mist chemical vapor deposition. The crystal quality was characterized mainly by the FWHM of the X-ray diffraction ω -rocking curve. We found that the use of tin acetate [Sn(CH 3 COO) 4 ] solution led to the…
We investigate localized plasmon-mode resonances in the scattering and absorption of transversely polarized light by bimetal core-shell nanowires made of silver and gold, in two possible combinations, using an analytical solution and experimental data for metal permittivities. In particular, the influence of the metal…