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A single layer nanothermite spin coated gel has been utilized as a solid-state exothermic energy release layer for triggered microchip transience. A proportional combination of self-assembled CuO/Al nanothermite and Napalm-B as gelling agent has been used to develop for the first time a spinable nanothermite film onto the surface of a micro-chip. This layer when ignited instantaneously releases enough...
To overcome physical size limitations in scaling transistors in inherently two-dimensional geometries, efforts are being directed at wafer stacking to implement more quasi three-dimensional (3D) architectures. However, significant and unprecedented gains in terms of packing and speed can be achieved if CMOS components can be integrated in truly 3D cellular porous architectures. In this paper, we present...
A smart Grid uses two way digital communications with advanced sensors to collect and analyze data for transforming the existing electric grid into intelligent, dynamic self-healing, self optimizing transmission and distribution grid. Because critical grid events often require real-time recognition and real time response. A smart grid uses IP-based, open standard, intelligent communication to measure...
We report two kinds of dye-sensitized solar cells where multiple electron injection mechanism is used. One is multiple electron injection consisting of linearly linked two dye molecules. Tin(IV) 2,11,20,29-tetra-tert-butyl-2,3-naphthalocyanine (NcSn) was adsorbed on a SnO2 surface by a Sn(p)-O-Sn(n) linkage, where Sn(p) and Sn(n) stand for a Sn atom on a Sn nanoparticle surface and that at the center...
This paper presents a methodology for financial analysis that compares costs and benefits of rural electrification by grid expansion with isolated micro hydro schemes. Financial analysis of three existing isolated micro hydro schemes in different parts of Nepal are compared against the alternative option of grid expansion. Case study results are tabulated and discussed.
Three dimensional transparent conductive oxide-less dye-sensitized solar cells (3D-TCO-less DSCs) consisting of a flexible porous titania sheet are reported. The flexible titania sheet is composed of a dye stained porous titania layer and a mesh sheet acting as the backbone. Flexible TCO-less DSCs, tandem DSCs, TCO-less cylinder DSCs and TCO-less cubic DSCs are fabricated and their fundamental photovoltaic...
Internet evolution, along with the advancement of digital multimedia tools have create a major impact in making the storage and distribution of multimedia content a straightforward tasks. Thus security of multimedia contents becomes a vital issue and there is a need in protecting the digital content against counterfeiting, piracy and malicious manipulations. Digital watermarking is an evolving field...
Three dimensional transparent conductive oxide-less dye-sensitized solar cells (3D-TCO-less DSCs) consisting of a flexible porous titania sheet are reported. The flexible titania sheet is composed of a dye stained porous titania layer and a mesh sheet acting as the backbone. Flexible TCO-less DSCs, tandem DSCs, TCO-less cylinder DSCs and TCO-less cubic DSCs are fabricated and their fundamental photovoltaic...
Scientific computing often requires the availability of a massive number of computers for performing large scale experiments. Traditionally, these needs have been addressed by using high-performance computing solutions and installed facilities such as clusters and super computers, which are difficult to setup, maintain, and operate. Cloud computing provides scientists with a completely new model of...
Scientific applications like neuroscience data analysis are usually compute and data-intensive. With the use of globally distributed resources and suitable middlewares, we can achieve much shorter execution time, distribute compute and storage load, and add greater flexibility to the execution of these scientific applications than we could ever achieve in a single compute resource.In this paper, we...
Network topology information helps one analyze faults in IP networks and their locations. Rectifying such faults is a key role of an enterprise IP network management system. Thus, the automatic discovery of enterprise network topology has been the subject of rigorous study for many years. This paper proposes a Simple Network Management Protocol (SNMP)-based solution that handles various types of network...
The Gridbus workflow management system (GWMS) is designed to execute scientific applications, expressed in the form of workflows, onto Grid and Cloud resources. With the help of this system, we demonstrate a computational and data-intensive Image Registration (IR) workflow for functional Magnetic Resonance Imaging (fMRI) applications on Clouds and global Grids. We also present a demonstration of the...
The capacitance-voltage(C-V) and switching characteristics of AlGaN/GaN HEMT has been calculated analytically. The device capacitances and switching parameters, which have been calculated, depends on the basic device parameters and terminal voltages which determine the microwave behavior of a device. The nonvariant nature of this device with drain voltage leads to better device choice for high power...
An analytical thermal model of AlGaN/GaN high electron mobility transistor (HEMTs) has been developed. This temperature dependent model incorporates the polarization effects at heterointerface. The model also accounts for the mobility degradation with increase in temperature, which is one of the major causes in deteriorating the driving current. By using the variation of band gap with temperature,...
Object detection, is an important element of various computer vision areas, such as image retrieval, shot detection, video surveillance, etc. which require automatic segmentation or location of regions of interest in images which can be further analyzed by more computationally demanding techniques to produce a correct interpretation. This paper explores the possibility of performing this task of object...
For the first time, we have demonstrated a 32 nm high-k/metal gate (HK-MG) low power CMOS platform technology with low standby leakage transistors and functional high-density SRAM with a cell size of 0.157 mum2. Record NMOS/PMOS drive currents of 1000/575 muA/mum, respectively, have been achieved at 1 nA/mum off-current and 1.1 V Vdd with a low cost process. With this high performance transistor,...
Novel CMOS device is proposed as a biochemical sensor. We modified the basic architecture of an extended floating-gate field-effect transistor (FET) to be suited for VLSI applications. The FET has a floating-gate that is umbrella-shaped (UGFET), maximizing its charge sensing area in a much reduced transistor area. Compared to previous extended floating-gate structures, the UGFET shows improved scalability...
We report a compact 2D model for AlGaN/GaN HEMT with different gate stack configurations. A two dimensional analysis is done which also includes the various polarization effects. The output characteristics, device transconductance and cut-off frequency (fT) for 120 nm gate length device are obtained. Peak transconductance of 320 mS/mm and a cut-off frequency (fT) of 120 GHz has been obtained. It is...
Selection of resources for execution of scientific workflows in data grids becomes challenging with the exponential growth of files as a result of the distribution of scientific experiments around the world. With more runs of these experiments, huge number of data-files produced can be made available from numerous resources. There is lack of work in optimal selection of data-hosts and compute resources...
Two major trends can be observed in a modern system-on- chip design: first a growing trend in system complexity, which results in a sharp increase of communication traffic on the on-chip communication bus architectures. The second in technology scaling indicates that the wires are getting thinner and results in an increment of wire delay and power consumption. These, in turn, result in the degradation...
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