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Enhancing the light absorption in ultra-thin crystalline silicon wafer based solar cell is a challenge to be met. Among several approaches and techniques to do so, the very simple yet effective technique of lensing the light into the substrate is investigated in this work. Spherical silica micro-lenses have been designed and studied. The effect of the micro-lenses has been observed for varying substrate...
We demonstrate a front-side process integration method to insert high-density 1.2um diameter Tungsten (W) Through Silicon Vias (TSVs) into advanced-node logic wafers after metal-4. This late-TSV-middle approach offers the ability to build 3D technology into commercially available 90nm-node CMOS, while avoiding many of the challenges associated with TSV-last integrations. We also demonstrate a TSV-reveal...
Employing the metals and metal oxides, nano scaled cell system consisting of double layered photovoltaic devices in the solar cell was presented in this paper. The purpose of this research is to find an example of a metamaterial in which the surface plasmon polariton will occur when a beam of light is entered at a certain angle, through manual calculation and the use of computer programs. With the...
Some electricity markets use Locational Marginal Prices (LMPs) to trade energy, but due to transmission lines congestion there may be volatility, existing differences between LMPs from generation points and LMPs in load points. These markets resort to the implementation of Financial Transmission Rights (FTRs) for hedging market participants against that congestion charges. In this paper, a review...
For the learning and teaching process is not enough to count with the right type of methodology according to the objectives. The successful implementation of this is in some cases is linked to the way it is carried out; in other words, the application itself. There are projects in this field which fail to succeed simply because teachers who are new do not have prior experience and make mistakes in...
This paper focuses on the problem of D-stability control design for descriptor systems in algebraic differential representation. The aim is to design a control to ensure that all system eigenvalues in closed loop belongs to a given set in the complex plane. Sufficient LMI based conditions are proposed for both state and output feedback control. The proposed results are applied to a single-machine...
The main purpose of this study it's to present a web application called EndusCheck as a solution to facilitate the process to determine end user's satisfaction that uses learning objects mainly, but it can be used to measure satisfaction level in another educative modalities and technologies too. In fact, it can be used to determinate satisfaction to any product or service. In this document first...
There is an urgent need in the University Teachers to create their own digital educational materials, (MED) that they allow them to customize and contextualize their areas of knowledge with an inclusive approach to support their academic practice as mediators' elements in the teaching-learning process. From this perspective, this text aims, guide, orient, and promote from the theory to practice in...
Researchers have conducted extensive research on the fatigue mechanism of silicon microstructures. But the key step in some mechanisms that localized oxide can thicken at high stress concentration sites after fatigue failure lacks support. Based on the Deal-Grove model of the thermal oxidation of silicon, we have proposed a chemical kinetics principle of cyclic stress enhanced oxidation: Tension can...
The surface planarization of nanoporous SiO2 is made by method of atomic-molecular layer deposition of TiO2 nanofilm in different modes. A penetration of TiO2 in nano-pores of SiO2 is controlled by ellipsometry.
Traditional low-refraction-index devices are usually supported by a pedestals, introducing an extra air layer compared with real on-chip devices, which cannot meet the demand of optical interconnection. In this work, we proposed and experimentally demonstrated silica microtoroids bonded on high-refractive-index silicon substrate realizing good light confinement [1]. With proper microtoroid minor diameter,...
We have presented an advanced FEM simulation model that is able to map the scenario of indentation of a diamond tip into a thin brittle SiNx:H film deposited on a Si substrate. Our 2D axisymmetric and 3D quarter and half models are able to reproduce all failure modes observed in preceding indentation experiments. On the one hand, brittle fracture in both film and surface were successfully modelled...
Actually serious games are becoming a teaching and learning strategy deals with high motivation levels and concept assimilation in students. Particularly, videogames supported in technology to enrich the learning experience. For these reason, the universities have an interest in serious games for attracting new generations. In the case of software project management, there is a constant concern for...
Room temperature and pressure bonding is shown for wafer-to-wafer (W2W) bonding but never for small chips. Usually, thermo-compression bonding (TCB) is employed for die-to-die (D2D) and die-to-wafer (D2W) bonding for 3D and MEMS application. TCB process is itself limited by tool capability and requires pressure and temperature for bonding which is not only time consuming but can induce coefficient...
Este artículo muestra un trabajo que pretende dar validez a un conjunto de guías heurísticas específicamente diseñadas para evaluar la Experiencia de Usuario (UX) en sitios web de comercio electrónico. Para ello se ha analizado la heurística propuesta en un trabajo previo-tanto en lo que refiere a la redacción de las guías cómo a la particular forma de puntuación que se propone en dicho trabajo, se...
Silicon ring resonators have high thermal sensitivity of about 0.1 nm/°C. Using sol-gels as cladding material we show that sensitivity can be reduced down to 2 pm/°C within the temperature range from 12 °C to 40 °C.
Silicon has been the Holy Grail of modern electronics since the invention of the Si transistor followed by the Si Integrated circuit in the 1950s. It is now the basis of terrestrial photovoltaic (PV) devices and systems which provide a viable means to combat global climate change. As such the requirement of Polysilicon has grown by orders of magnitude to tens of thousands of tonnes per annum to meet...
In this paper, strain effects on silicon n-channel gate-all-around (GAA) jucntionless field effect transistor (JLFET) are studied. By using tensile strain SiN layer, drive currents of the JLFETs show enhancement of up to 42%. The high performance strained JLFETs exhibit superior gate control (Ion/Ioff >109) and ideal S.S. (65 mV/dec.) as a channel width scales down to 20 nm. Drive currents and...
Motivation for photonic integration can be summarized as reduction of cost, power consumption, size, packaging, and failures (FIT), and challenges in photonic integration are to achieve high yield. Heterogeneous photonic integration provides an opportunity for combining advantages from multiple photonic integration platforms. For instance heterogeneous integration of silicon, InP, and silica photonic...
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