Random networks and aligned arrays of single-walled carbon nanotubes for electronic device applications

Abstract

Singled-walled carbon nanotubes (SWNTs), in the form of ultrathin fi lms of random networks, aligned arrays, or anything in between, provide an unusual type of electronic material that can be integrated into circuits in a conventional, scalable fashion. The electrical, mechanical, and optical properties of such fi lms can, in certain cases, approach the remarkable characteristics of the individual SWNTs, thereby making them attractive for applications in electronics, sensors, and other systems. This review discusses the synthesis and assembly of SWNTs into thin film architectures of various types and provides examples of their use in digital electronic circuits with levels of integration approaching 100 transistors and in analog radio frequency (RF) systems with operating frequencies up to several gigahertz, including transistor radios in which SWNT transistors provide all of the active functionality. The results represent important steps in the development of an SWNT-based electronics technology that could fi nd utility in areas such as fl exible electronics, RF analog devices and others that might complement the capabilities of established systems.

Carbon Nanotube- and Graphene Based Devices, Circuits and Sensors for VLSI Design

“…In addition, larger diameters reduce the I ON /I OFF ratio and voltage swing, which is the key to achieve very high speed operation and high definition of the output signal, respectively. In the same way, diameters in the range of 1 to 1.5 nm have the highest performance in current drive, which allow us to reduce the delay and increase the short circuit power that are used during switching (Cao & Rogers, 2008). Given the demand of driving large capacitive loads, the carbon nanotube based transistors must be designed with complex architectures to support high current densities.…”

Immobilization of biomolecules on the surface of inorganic nanoparticles for biomedical applications

“…CNTs can be classified into single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs) [42], with diameters of close to 1 nm and lengths up to 1 mm [43,44]. They have been applied as composite materials [45], nanoelectronic components [46,47], field-effect emitters [48] and hydrogen storage materials [49]. The biological applications of CNTs have also been explored recently [50][51][52][53].…”

Nontronites as catalyst for synthesis of carbon nanotubes by catalytic chemical vapor deposition.

“…The SWCNT exhibit high flexibility and toughness, extremely high strength and Young's modulus (≥1 TPa), chemical inertness, magnetic, thermal-and electro-conductive properties (Treacy et al, 1996;Thostenson et al, 2001;Robertson, 2004). They can be utilized as bulk materials for applications such as catalysts, adsorbents support, gas separation and storage etc., and also as single nano-electronic devices placed in defined positions of electronic circuits such as THz devices (Cao and Rogers, 2008).…”