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Low-threshold field emission is the intrinsic property for nanocarbon materials. Emission characteristics of planar field cathodes with carbon nanotubes (CNT) deposited from solution to Si, Al, Pd substrates were studied. The field emission threshold value for horizontally aligned CNT was found as low as 4 V/μm. However, the field enhancement in these samples is negligible (<10). We propose to...
As the future of Moore's law appears uncertain, Electronics is being reinvented with a broader focus on flexible electronics, bioelectronics, and energy-harvesting. In this regard, a material based on nanonets of Carbon Nanotubes or Si/ZnO/SiGe Nanowires have been used as channel materials for thin-film transistors for flexible/transparent electronics, as sensor elements for label-free bio-sensors,...
This paper reports on the preparation of nano-structured of MgxZn1-xO thin films by sol-gel spin coating method which will be used as a template layer to grow carbon nanotubes. The MgxZn1-xO films were deposited on Pt/Si (100) substrates. In this work, we focused on the effect of sol aging and Mg content on the film structure and resistivity. Sols with Mg content of x = 0.1, 0.3 and 0.5 were subjected...
The incorporation of nanostructured materials as functional elements of microscale devices can enhance the application of these systems for biological interfacing. Vertically aligned carbon nanofibers (VACNFs) have been applied as highly spatially resolved electrodes in electrophysiological interfacing to tissue. Further, their high aspect ratio enables them to penetrate into cells of tissue matrices...
Field electron emitters are made from these materials: 3D materials, like in metals e.g. W, Mo and in metal compounds HfC3, W/C4, Co/C5, are applied as electron sources in transmission electron microscopes TEM, scanning electron microscopes SEM, and signal amplifier tubes. Technical applications longed for long lasting emitters, which are found using a 2D emitter Zr-O-W. Other 2D emitters are searched...
Novel dual-scaled superhydrophobic nano-flower surfaces were fabricated by 1-mask photolithography, DRIE and carbon nanotube (CNT) microwave plasma enhanced CVD (MPCVD). Patterned structure was characterized by SEM, TEM and AFM techniques. With the additional petal-like CNT structure, the apparent contact angle (ACA) increased dramatically compared with silicon (~140%) and parylene-coated (~78%) micropillar...
We discuss atomistic approaches to quantum transport within the semi-empirical tight-binding framework. We show that the latter is well suited to the study of present nanostructures such as carbon nanotubes, semiconductor nanowires and graphene. It indeed provides a very good balance between accuracy and efficiency, and can be coupled with ab initio methods to upscale the calculations to the mesoscopic...
Contacting carbon nanotubes (CNTs) and graphene with nanometer-scale metals is of great interest for both fundamental studies and technical applications. In this work, we describe the fabrication and characterization of sub-5 nm linewidth metallic hafnium diboride (HfB2) nanostructures on silicon surfaces as well as on CNTs and graphene using scanning tunneling microscopy (STM) and spectroscopy (STS).
Graphene is a possible candidate for advanced channel materials in future field effect transistors. This presentation gives a brief overview about recent experimental results in the field of graphene transistors for future electronic applications.
In the last few decades, the semiconductor industry has been able to maintain steady improvements of device performance by the scaling of silicon-based devices. However, this approach will soon meet both scientific and technical limits, and there have been tremendous efforts to seek alternative device technologies. Some approaches involve moving away from traditional charge-based electronics, such...
Micromachining is an extended IC fabrication based on photo-fabrication, deep etching, anodic bonding and other advanced process technologies. This is used to produce MEMS (Micro Electro Mechanical Systems) featuring multi-functions, small size and low cost. Nanostructures such as CNT (Carbon Nano Tube) can be also included in the MEMS by nanomachining. MEMS are used as value added key components...
Field emission displays (FEDs) are one of the various technologies being developed for the flat-panel display market. Much recent work has centred on carbon-nanotube-patterned cathodes, however, and alternative technology that is compatible with conventional silicon CMOS processes would be desirable. Self-assembled silicon nanostructures are a possible alternative. Processes for forming diodes and...
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