New systems are required for optical limiting against broadband laser pulses. We demonstrate that the association of non-linear scattering from single-wall carbon nanotubes (SWNT) and multiphoton absorption (MPA) from organic chromophores is a promising approach to extend performances of optical limiters over broad spectral and temporal ranges. Such composites display high linear transmission a...

A lecture on current limiter intended specifically for engineering students pursuing specialization with Electrical and Electronics engineering is proposed in this paper. The important information which doesn’t appear in text books are presented to the students. A general overview of different techniques of limiting fault current in electric power systems with special emphasis on two types of c...

In this work, the study of two-photon absorption by gold nanoparticles different diameters photodeposited onto core a single-mode optical fibre is presented. The photodeposition with 10, 20, 50 and 100 nm was achieved using continuous wave laser at wavelength 1550 power mW. Nonlinear characterization carried out P-scan technique high gain erbium doped amplifier pulses 20 ns frequency 10 kHz, th...

This paper addresses the challenge of controlling power dissipation in the microprocessor domain. System level power management architectures [I] have helped control chip-set and peripheral power substantially. But the consequence is that the CPUs are now the power limiters, especially in the mobile domain. This paper addresses two challenges in power reduction of high-performance CPUs. First w...

Protection of human eyes or sensitive detectors from high-intensity laser radiation is an important challenge in modern light technologies. Metasurfaces have proved to be valuable tools for such control, but the actual possibility merging multiple materials nanofabrication process hinders their application. Here we propose and numerically investigate opto-thermal properties plane multilayered s...

In conjunction with energy and particle fuelling, considerable mechanical or electromagnetic momenta are transferred to fusion plasmas, e.g. through neutral beam injection, limiter re­ cycling, pellet injection and RF heating. The build up of electric Fields through charge separation in the momentum absorption process is estimated for somewhat simplified cases of neutral particle injection and ...

In this paper we study the numerical approximation of bedload sediment transport due to shallow layer flows. The hydrodynamical component is modeled by a 2D shallow water system and the morphodynamical component by a solid transport discharge formula that depends on the hydrodynamical variables. The coupled system can be written as a nonconservative hyperbolic system. To discretize it, first we...

Runge-Kutta discontinuous Galerkin (RKDG) method is a high order finite element method for solving hyperbolic conservation laws employing useful features from high resolution finite volume schemes, such as the exact or approximate Riemann solvers serving as numerical fluxes, TVD Runge-Kutta time discretizations and limiters. In most of the RKDG papers in the literature, the LaxFriedrichs numeri...