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The optical properties of Ni doped 3C-SiC, with different concentrations, were studied by using the full potential linearized augmented plane wave (FP-LAPW) method with the generalized gradient approximation (GGA) and GGA Modified Becke Johnson (GGA-mBJ) within Wien2k package. The obtained results within GGA-mBJ approximation are in good agreement with experimental data. The electrical conductivity...
In this paper we focus on solving the problem of maximal partitioning of graphs with supply and demand. The interest for this problem is due to the fact that it well represents the optimization of self-adequacy of interconnected microgrids. The chosen method is a heuristic based greedy algorithm which can be applied to very large problem instances in feasible time, which best relates to potential...
We consider a surveillance radar system equipped with an electronically scanned antenna and study a scanning policy divided in two phases, namely, a search phase, where the antenna beam rotates to illuminate the monitored area, and a revisit phase, where some ambiguous returns are revisited for further investigation. The revisit phase introduces additional degrees of freedom for system design, that...
In this paper, we present a new formal method to analyze cryptographic protocols statically for the property of secrecy. It consists in inspecting the level of security of every component in the protocol and making sure that it does not diminish during its life cycle. If yes, it concludes that the protocol keeps its secret inputs. We analyze in this paper an amended version of the Woo-Lam protocol...
The idea of composite cloud service has been emerging to reduce negative impact of cloud bursting. The novel idea of composite cloud services is achieved by forming a dynamic cloud collaboration platform among cloud providers. An important prerequisite of dynamic collaborative cloud formation is to reduce the cost of infrastructure and prevent loss to business enterprises owing to cloud bursting....
In this paper, patterned Cu and Si substrates are interconnected via solder alloys through Al/Ni self-propagating nano-film to obtain hermetical packaging for infrared detector. During the joining process, substrates which are coated with different solder layers (e.g. Sn and AuSn) are bonded under various atmospheres. By optimizing joining parameters, reliable metallurgical joints between Si/Cu and...
As a core link of battery energy storage system (BESS) for grid-connection, the dual-active-bridge (DAB) converter has significant effects on the performance of the whole system. In order to address the mismatch voltage issue of DAB in BESS, an optimal control strategy is proposed. The paper discusses the operation principle of the circulating power, and analyzes the voltage, transmission power and...
In this paper, we consider a wireless sensor network where only a part of the sensors in the network generate measurement data and have interest in the aggregation output. However, in order to maintain connectivity of the sensors involved in the application, namely application-member sensors, other so called non-application-member sensors, have to participate in the communications to assist in the...
Modeling spreading processes for infections has been a widely researched area owing to its application in variety of domains especially epidemic spread and worm propagation. Until recently, infection propagation models usually inspired by epidemic spreading, solely relied upon the underlying network properties without taking into account the variation in node specific properties, such as its ability...
Polycrystalline Si (poly-Si) thin-film is widely used in optical MEMS/NEMS devices. However, the device performance depends on the crystallized structure in the poly-Si thin-film. We performed metal-induced lateral crystallization (MILC) to design the positions of grain boundaries in the poly-Si thin-film. Thin-film cantilever resonators were fabricated to discuss how grain boundaries affect the oscillation...
To reduce the uncertainty of the Avogadro constant for the new definition of the kilogram, the surface analysis of the Si sphere produced for the accurate determination of the Avogadro constant is indispensable. In this work, we conducted the surface quantitative analysis to find out the metallic contaminations of a Si sphere by x-ray fluorescence (XRF) spectroscopy. The x-ray photoelectron spectroscopy...
For some classification tasks the data can be partitioned into disjoint subsets based on some attribute, for example a disease subtype. It then seems logical to train a classifier with the same classes as the original classification problem for each subtype separately, such that the performance per subtype is optimized. Unfortunately, the influence of the subtype performances on the aggregated overall...
In this paper, we present the fabrication and characterization of a silicon micromirror with carbon nanotubes (CNTs)-nickel (Ni) nanocomposite beams, and evaluate the mechanical stability of the micromirror in terms of resonant frequency. A novel electroplating method is developed for synthesis of the CNTs-Ni nanocomposite. CNTs are pretreated to have positive charges on their surface and added into...
There is a constant increase in the interest shown for trusted computing in the embedded domain. In an MPSoC each processing element such as a CPU could request accessing any physical resource of the device such as a memory or an I/O component. Along with normal requests, malevolent ones could occur produced by malware applications or processes running in one or more CPUs. A protection mechanism is...
We consider the classic problem of pole placement by state feedback. We revisit the well-known eigenstructure assignment algorithm of Kautsky, Nichols and van Dooren [1] and extend it to obtain a novel parametric form for the pole-placing feedback matrix that can deliver any set of desired closed-loop eigenvalues, with any desired multiplicities. This parametric formula is then employed to introduce...
Node clustering has been widely studied in recent years for Wireless Sensor Networks (WSN) as a technique to form a hierarchical structure and prolong network lifetime by reducing the number of packet transmissions. Cluster Heads (CH) are elected in a distributed way among sensors, but are often highly overloaded, and therefore re-clustering operations should be performed to share the resource intensive...
We report a new approach to realize the Ge CMOS technology based on the recessed channel and source/drain (S/D). Both junctionless (JL) nFETs and pFETs are integrated on a common GeOI substrate. The recessed S/D process greatly improves the Ge n-contacts. A record high maximum drain current (Imax) of 714 mA/mm and trans-conductance (gmax) of 590 mS/mm, high Ion/Ioff ratio of 1×105 are archived at...
Carbon nanotubes (CNTs) are one of the most diverse nano-scale materials that have been investigated for many practical and commercial applications. In this work we have fabricated a diode using CNTs and the operating characteristics of a CNT diode are presented.
In this work we demonstrate a new selective metallization technique to perform localized plating on the screen-printed Al contact using the innovative approach based on Dynamic Liquid Drop/Meniscus that is able to touch the cell back contact in specific defined positions and show that it is possible to produce suitable electrical and mechanical contact with Al-Si and thus to replace the silver from...
The Ni/epi-SiGe/Si layer stacks were annealed by microwave annealing and rapid thermal annealing via halogen lamp heating. Sheet resistance, X-ray diffraction and micro-Raman spectroscopy results indicate that the reaction and diffusion rates of the related Ni, Si and Ge atoms were accelerated for the samples annealed by microwave annealing, compared with the samples annealed by rapid thermal annealing...
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