CuO is an attractive anode material for Li-ion batteries because of its high specific capacity. However, conventional CuO powders suffer from a large volume expansion during the Li insertion–extraction process, resulting in contact loss between the active material and the current collector. In this work, a nano-architecture made of metallic Cu core–CuO shell nanocable arrays is fabricated direc...

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An abrupt p n junction, such as occurs at the collector junction of an n-p-n transistor, is considered. The ratio of nto p-region conductivity is taken to be very high, so that the transition region is restricted almost entirely to the p-region. The electron density distri bution n within the transition region is investigated as a fUnction of the applied r everse bias V , and of the minority ca...

some of the important mechanical loads in the civil and military industries are variable speed and power and their efficiency. mechanical coupling of two different electric motors is suitable for these types of application. using this technique reduces energy consumption of submarine’s motion system and submarine range would be increased. but the use of this technique requires a complex control...

Electrospinning process is used in the manufacturing industry to generate nanofibers in an efficient way. The principle of this process is the deformation of a drop by the application of an electric field. The strength of the electric field generates force that makes the drop to elongate. Four cases are studied in order to show that the force distribution varies along the drop surface. In case ...

Heterojunction bipolar transistors with GaAsxP1-x bases and collectors and InyGa1-yP emitters were grown on GaAs substrates via metalorganic chemical vapor deposition (MOCVD), fabricated using conventional techniques, and electrically tested. Four different GaAsxP1-x compositions were used, ranging from x = 0.825 to x = 1 (GaAs), while the InyGa1-yP composition was adjusted to remain lattice-ma...

A modified version of the carburization process, a widely established technique used in the steel industry for case hardening of components, is used for the growth of graphene on stainless steel. Controlled growth of high-quality single- and few-layered graphene on stainless steel (SS) foils through a liquid-phase chemical vapor deposition (CVD) technique is reported. Reversible Li intercalatio...

r s a T a a Electrochemical methods were developed for the deposition of nanosilicon onto a 3D virus-structured nickel current collector. This nickel current collector is composed of self-assembled nanowire-like rods of genetically modifi ed tobacco mosaic virus (TMV1cys), chemically coated in nickel to create a complex high surface area conductive substrate. The electrochemically deposited 3D ...

Matched bipolar transistor pairs are a very powerful design tool, yet have received less and less attention over the last few years. This is primarily due to the proliferation of high-performance monolithic circuits which are replacing many designs previously implemented with discrete components. State-of-the-art circuitry, however, is still the realm of the discrete component, especially becau...

Many of the current software systems rely on garbage collectors for automatic memory management. This is also the case for various software systems in real-time applications. However, a real-time application often requires an incremental working style of the underlying garbage collection, which renders the garbage collector more complex and less trustworthy. We present a formal verification of ...