Journal Article•
Novel Spatially Arranged Mixed Carbon Nanotube Bundle Interconnects - Impact on Delay and Power
TL;DR: In this article, a hierarchical model of mixed CNT bundle (MCB) based non-conventional arrangements of single and multi-walled carbon nanotubes was introduced to analyze the propagation delay and power dissipation of CNT bundles.
About: This article is published in Scientia Iranica.The article was published on 2013-12-01 and is currently open access. It has received 2 citations till now.
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129 citations
TL;DR: In this article, a modified glassy carbon electrode (GCE) was used as a mediator to determine glutathione oxidization at the surface of the GCE, where functionalized multi-walled carbon nanotubes (MWCNTs) and formazon were used as mediators.
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References
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TL;DR: An unusually high value, lambda approximately 6600 W/m K, is suggested for an isolated (10,10) nanotube at room temperature, comparable to the thermal conductivity of a hypothetical isolated graphene monolayer or diamond.
Abstract: Recently discovered carbon nanotubes have exhibited many unique material properties including very high thermal conductivity. Strong sp 2 bonding configurations in carbon network and nearly perfect self-supporting atomic structure in nanotubes give unusually high phonon-dominated thermal conductivity along the tube axis, possibly even surpassing that of other carbon-based materials such as diamond and graphite (in plane). In this chapter, we explore theoretical and experimental investigations for the thermal-transport properties of these materials.
3,011 citations
"Novel Spatially Arranged Mixed Carb..." refers background in this paper
...In recent years, carbon nanotubes (CNTs) have aroused much research interest in the area of microelectronics/nanoelectronics, due to their unique physical properties, such as higher thermal stability [2], mechanical strength [3], higher current carrying capability [4] and ballistic transport phenomenon [5]....
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TL;DR: In this article, the current carrying capacity and reliability of multiwalled carbon nanotubes under high current densities (>109 A/cm2) were investigated and shown that no observable failure in the nanotube structure and no measurable change in the resistance are detected at temperatures up to 250 ˚C and for time scales up to 2 weeks.
Abstract: The current-carrying capacity and reliability studies of multiwalled carbon nanotubes under high current densities (>109 A/cm2) show that no observable failure in the nanotube structure and no measurable change in the resistance are detected at temperatures up to 250 °C and for time scales up to 2 weeks. Our results suggest that nanotubes are potential candidates as interconnects in future large-scale integrated nanoelectronic devices.
1,229 citations
"Novel Spatially Arranged Mixed Carb..." refers background in this paper
...In recent years, carbon nanotubes (CNTs) have aroused much research interest in the area of microelectronics/nanoelectronics, due to their unique physical properties, such as higher thermal stability [2], mechanical strength [3], higher current carrying capability [4] and ballistic transport phenomenon [5]....
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TL;DR: In this article, a nearly monodisperse iron nanoclusters have been used to define the diameters of carbon nanotubes grown by chemical vapor deposition (CVD).
Abstract: Nearly monodisperse iron nanoclusters have been used to define the diameters of carbon nanotubes grown by chemical vapor deposition (CVD). Iron nanoparticles with average diameters of 3, 9, and 13 nm were used to grow carbon nanotubes with average diameters of 3, 7, and 12 nm, respectively. Transmission electron microscopy studies of the nanotubes show that the as-grown nanotubes are single-walled carbon nanotubes (SWNTs) or thin multiwalled carbon nanotubes (MWNTs) with 2 or 3 layers. Investigations of the growth conditions also demonstrate that the supply of carbon reactant is critical for enabling the growth of large diameter nanotubes from large iron nanoclusters, and that the growth temperature is especially important for achieving high-quality large diameter nanotubes. The implications of these results and possible applications of the nanotubes are discussed.
818 citations
"Novel Spatially Arranged Mixed Carb..." refers background in this paper
...Several research works [12,13] based on CNT fabrication demonstrate that a realistic nanotube bundle contains not only SWCNTs but also MWCNTs....
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TL;DR: In this paper, the authors present a technique to directly excite Luttinger liquid collective modes in carbon nanotubes at gigahertz frequencies by modeling the nanotube as a nano-transmission line with distributed kinetic and magnetic inductance as well as distributed quantum and electrostatic capacitance.
Abstract: Presents a technique to directly excite Luttinger liquid collective modes in carbon nanotubes at gigahertz frequencies. By modeling the nanotube as a nano-transmission line with distributed kinetic and magnetic inductance as well as distributed quantum and electrostatic capacitance, we calculate the complex frequency-dependent impedance for a variety of measurement geometries. Exciting voltage waves on the nano-transmission line is equivalent to directly exciting the yet-to-be observed one-dimensional plasmons, the low energy excitation of a Luttinger liquid. Our technique has already been applied to two-dimensional plasmons and should work well for one-dimensional plasmons. Tubes of length 100 microns must be grown for gigahertz resonance frequencies. Ohmic contact is not necessary with our technique; capacitive contacts can work. Our modeling has applications in potentially terahertz nanotube transistors and RF nanospintronics.
617 citations
"Novel Spatially Arranged Mixed Carb..." refers background in this paper
...kinetic inductance and quantum capacitance of a spinless single conducting channel, respectively [24]....
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IBM1
TL;DR: In air failure is initiated by oxidation at a particular power, whereas in vacuum MWNTs can withstand much higher power densities and reach their full current carrying capacities, and the initiation of this failure is very sensitive to air exposure.
Abstract: We investigate the limits of high energy transport in multiwalled carbon nanotubes (MWNTs). In contrast to metal wires, MWNTs do not fail in the continuous, accelerating manner typical of electromigration. Instead, they fail via a series of sharp, equally sized current steps. We assign these steps to the sequential destruction of individual nanotube shells, consistent with the MWNT's concentric-shell geometry. Furthermore, the initiation of this failure is very sensitive to air exposure. In air failure is initiated by oxidation at a particular power, whereas in vacuum MWNTs can withstand much higher power densities and reach their full current carrying capacities.
617 citations
"Novel Spatially Arranged Mixed Carb..." refers background in this paper
...In recent years, carbon nanotubes (CNTs) have aroused much research interest in the area of microelectronics/nanoelectronics, due to their unique physical properties, such as higher thermal stability [2], mechanical strength [3], higher current carrying capability [4] and ballistic transport phenomenon [5]....
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