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Showing 1 to 20 of 39 for “"silicon nanowires"”.
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Silicon nanowires : photovoltaic and thermoelectric applications
Örtækni gegnir þýðingarmiklu og vaxandi hlutverki við nútíma orkuöflun og orkuvinnslu. Markmið þessa verkefnis er að beita örtækni til að framleiða sólarhlöð og varmahlöð (e. thermoelectric cell), byggð á örgrönnum kísilvírum, til orkuvinnslu. Kostir nanóvíra í sólarhlöðum eru m.a. stórt …
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Silicon Nanowires the Route from Synthesis towards Applications
This work provides an overview on the silicon nanowires synthesis scenario by introducing the most employed bottom-up and top-down strategies, exploiting their main advantages and drawbacks. The impressive structural, optical and electrical properties of these nanostructures promote their …
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Silicon nanowires: an outstanding building block for innovative applications
Abstract: Silicon nanowires: an outstanding building block for innovative applications
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Laser direct written silicon nanowires for electronic and sensing applications
<p>Silicon nanowires are promising building blocks for high-performance electronics and chemical/biological sensing devices due to their ultra-small body and high surface-to-volume ratios. However, the lack of the ability to assemble and position nanowires in a highly controlled manner still …
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Experimental determination of the thermoelectric properties of porous silicon nanowires
"The thermoelectric properties of nanostructured silicon have attracted significant attention in recent work. The objective is to reduce thermal conductivity through the introduction of phonon scattering mechanisms while preserving charge transport. Initial reports on electrolessly etched silicon …
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Synthesis and characterization of silicon nanowires, silicon nanorods, and magnetic nanocrystals
Silicon nanowires, silicon nanorods, and magnetic nanocrystals have shown interesting size, shape, mechanical, electronic, and/or magnetic properties and many have proposed their use in exciting applications. However, before these materials can be applied, it is critical to fully understand their …
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Vertical silicon nanowire arrays for gas sensing
… to fabricate and characterize vertically aligned silicon nanowire gas sensors. Silicon nanowires are very attractive for gas sensing applications and vertically aligned silicon nanowires are preferred over horizontal nanowires for gas sensing due to the high density of nanowire arrays and the …
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Growth and characterisation of platinum and palladium catalysed silicon based nanostructures for nano-device fabrication
… nano-droplets which are used to synthesis silicon nanowires. This analysis was performed for both Molecular Beam Epitaxy (MBE) and Electron Beam Evaporator (EBE) deposited metal coated silicon substrates. The formation of platinum silicide phases as a function of annealing temperature and …
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Fabrication of capacitors based on silicon nanowire arrays generated by metal-assisted wet chemical etching
… chemical etching for fabrication of arrays of silicon nanowires, and then use this understanding to build nanowire array on-chip capacitors in silicon substrates, in order to eliminate additional packaging and enable local and efficient energy delivery. Two types of capacitors were …
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Silicon nanowire anode for lithium-ion batteries: fabrication, characterization and solid electrolyte interphase
… high operating voltage and high energy density. Silicon nanowires are considered as lithium-ion battery anodes for their ultra high capacity at 4200 mAh·g-1 (10× higher than conventional graphite anode), as well as stress accommodation for reversible lithiation and delithiation. Silicon nanowires …
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FABRICATION AND CHARACTERIZATION OF ACTIVE NANOSTRUCTURES
… Junctionless transistors based on highly-doped silicon nanowires fabricated using a bottom-up fabrication approach are first discussed. The fabrication avoids the ion implantation step since silicon nanowires are doped in-situ during growth. Germanium junctionless transistors fabricated with a …
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Orientation Controllable Epitaxial Vapor-Liquid-Solid Semiconductor Nanowire Synthesis on Silicon Substrate
<p>Semiconductor nanowires synthesized via the vapor-liquid-solid (VLS) mechanism have attracted extensive research interest in recent years owing to their unique structure as a promising candidate for the future electronic devices. Germanium and silicon nanowires, in particular, are compatible …
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Silicon piezoresistors for MEMS pressure sensor applications
Silicon based micromachining technology enables the realization of high perfonnance microelectromechanical systems (MEMS) including a range of physical and environmental sensors. Pressure sensors are used for a wide range of monitoring and control applications, e.g. environmental, industrial, …
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High speed nonlinear optical components for next-generation optical communications
… materials such as III-V semiconductor compounds, silicon, periodically-poled lithium niobate (PPLN), highly nonlinear fibre (HNLF) or chalcogenide glasses. However, nonlinear optical (NLO) components such as semiconductor optical amplifiers (SOAs), electroabsorption modulators (EAMs) and silicon …
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Effect of phonon transport on the Seebeck coefficient and thermal conductivity of silicon nanowire arrays
… properties of electrochemically etched silicon nanowires through experiments, complemented by charge and thermal transport theories. Electrolessly etched silicon nanowires show anomalously low thermal conductivity that has been attributed to the increased scattering of heat conducting …
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Nanoscale magnetic resonance imaging using silicon nanowire oscillators
… We report methods that enable the use of (1) silicon nanowires as ultrasensitive force transducers for magnetic resonance detection and (2) pulsed magnetic resonance techniques for nanometer-scale imaging and spectroscopy. Because of their small size and high aspect ratio, silicon nanowires …
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Storage and transport of energy in nanostructures
… the enhanced performance. In the second case, Silicon, another abundant material, in the form of a nanowire has been experimentally examined as a candidate material for thermoelectric applications to harvest waste heat. We designed and fabricated a device to gauge the thermoelectric figure of …
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Technology and market evaluation for semiconductor nanowire transistors
… alleviate many of the problems posed by scaling. Silicon being the material of choice of the semiconductor industry, it is highly desirable to have silicon one dimensional channel in the Gate-All- Around transistor. Silicon nanowires have been fabricated using various methods, in this work …
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Design and optimization of ultrathin silicon field effect transistor's for sensitive, electronic-based detection of biological analytes
… in the semiconductor and communications markets. Silicon nanowires are of great interest for point-of-care testing as they are a CMOS compatible structure, require the use of no labels, and are highly sensitive to the binding of molecules to their surfaces. This is due to the large surface area to …
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Optical sub-diffraction limited focusing for confined heating and lithography
… plates to be used in laser direct writing of silicon nanowires. We show experimentally and with numerical models that a silicon substrate subjected to a focused spot is capable of reaching the necessary temperature for the synthesis of silicon nanowires with widths of 60 nm, which is …
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