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In this work the authors have focused on Carbon Nanotube (CNT) and Carbon Nanotubes Field Effect Transistors (CNTFETs). In every 18 months the number of transistors in an integrated circuit doubles according to Moore's law. This increased number of transistors means the size of transistors will decrease as a result of which the circuit size decreases. As the size of the transistor decreases below...
The Sun provides the more than enough energy on Earth. In which only, a very small part of the solar energy on Earth is got changed into power for a given time. We have knowledge of the plants, are the best in solar power. After 100 billion years of natural development, most of them operate at nearly 100 parts of a hundred quanta to doing work well. Plants convert the every photon packet that fall...
Due to the scaling of devices in nanometer regime speed and power related issues rises in digital circuits. Carbon nanotube field effect transistor (CNTFET) has been used in the present work as a low power circuit element. The major advantage of CNTFET is low power and energy consumption as compared to the conventional CMOS. This paper proposes the basic implementation of CNTFET inverter, MUX and...
Due to their flexibility and compatibility with silicon devices, the use of carbon nanotubes as scaffolds for metal interconnect in flexible and wearable electronics has been proposed. This paper examines the performance of dual-height carbon nanotubes as flexible scaffolds for horizontal and vertical interconnects. For this purpose, a number of test structures have been designed and fabricated and...
The sponges made of multi-walled carbon nanotubes (CNT) demonstrate tunable electromagnetic response properties in the microwave range (27–36 GHz) governed by their mechanical deformation. The higher the applied stress, the denser the sponge, the more reflective it is in the Ka-band. The microwave effective conductivity of the CNT network macrostructure was proved to be linearly increased with its...
This paper demonstrates the possibility of obtaining interconnects with negative derivative of the electrical resistance with respect to temperature. The interconnect is made of multi-walled carbon nanotube, and is fabricated by self-assembly through a low-cost bottom-up technique. The results of an electro-thermal characterization demonstrate the possibility of obtaining a negative temperature coefficient...
Terahertz lasing by electron beam propagating over a graphene/dielectric sandwich structure is considered. A dispersion equation for the surface electromagnetic modes propagating along graphene sheets is derived and Čerenkov synchronism between surface wave and electron beam is predicted at achievable parameters of the system. The generation frequency tuning is proposed by varying the graphene doping,...
With the growth of electronics industry the need for data storage also increases, but the industries cannot satisfy this needs, because of technological and fundamental challenges faced by silicon materials. The main problem is scaling and related power issues. So the industries focusing on finding alternating material. This article reviews the nano materials uses in memory technology. First section...
The contact property between Ge2Sb2Te5 (GST) with vertical carbon nanotubes (CNTs) is studied in this work. By careful catalyst design and process optimization, we have demonstrated the formation of ohmic contact between the CNT and the GST material. The developed process is CMOS compatible and can be used for form phase change memory over the vias in the interconnect layers.
An unprecedented enhancement in electrical conductivity of horizontally aligned carbon nanotube (HA-CNT) structures using a 10 nm conformal coating of alumina (Al2O3) or amorphous silicon carbide (a-SiC) is presented. By combining the capability to grow long vertically aligned CNTs (VA-CNTs) with a liquid-assisted flattening technique, dense arrays of HA-CNTs exhibiting a high degree of alignment...
We have demonstrated field-ionization gas sensor using suspended silver nanowires as electrodes. The tight gap of 1.5 μm between two facing sets of suspended in-plane nanowires on top of silicon microelectrodes, as well as the sharp protrusion of nanowires, allows the generation of high and non-uniform electric field. This produces field emission of electrons that result in ionization of gas molecules...
Composite nanocoating of synthetic fibers for implantable materials has been developed. The coating is intended to improve the adhesion and proliferation of biological cells, which can lead to a reduction in damaged tissue regeneration time after implantation of synthetic material in the human body. The basis of the coating is a dispersion of carbon nanotubes in the protein matrix. The coating was...
Studies were performed on dependence of the biological tissues welds tensile strength, obtained at different temperatures, and denaturation temperature of bovine serum albumin (the main component of the laser solder) were conducted. BSA denaturation temperature was measured by differential scanning colorimetry.
Studies were performed on the interaction of laser solder components (bovine serum albumin and single-walled carbon nanotubes) by laser light scattering method. The formed aggregates size depends on the ratio of the albumin concentration to nanotubes concentration.
Composite biomaterial consists of bovine serum albumin 25 wt. % and single-walled carbon nanotubes <0.3 wt. %. This material designed for laser welding of biological tissues. Nonlinear optical characteristics were studied for determination of influencing the threshold effects in this composite, which occur during interaction with powerful laser radiation. The quality of this biomaterial was determined...
In this study is shown the possibility of the Raman spectroscopy as a method to control the parameters of carbon nanotubes (CNTs) subjected to powerful ultrasonic impact. These parameters affect the strength of the nanoframe formed under the action of laser radiation, which ultimately affects the final strength of the nanocomposite. Also a linear dependence of the intensity of G-band (∼1590 cm−1)...
In this study, characteristics of bioconstructions created by laser nanostructuring of carbon nanotubes in a matrix of bovine serum albumin were determined. Two types of bioconstructions were obtained: volumetric samples and thin films. Weight loss of bioconstructions placed in a liquid for 14 days was from 2.45 to 22.81%. The samples have good compatibility with blood cells, the values of hemolysis...
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...
In this work we report synthesis and characterization of integrated SWCNT-Pt-P2O5-based sensors for absolute humidity (AH) measurement. The sensors were obtained by direct deposition of an active doped layer to the surface of an interdigitated planar sensor type, by drop cast method. For the experimental investigation two sensors with the same active layer were fabricated and tested for detecting...
We developed a novel approach to fabricate suspended metal- and metal oxide nanowires using carbon nanotubes (CNTs) as sacrificial template. As a potential application that harnesses the unique properties of suspended nanowires, sensitive chemical sensors were demonstrated. The suspended CNTs template was synthesized on the side wall of the electrodes by chemical vapor deposition (CVD), followed by...
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