Nanowires carbon nanotubes

Silicon-based ICs 1961 III-V semi, Si-nanowire, carbon nanotube 2011-2015 Scaling performance power... 

Nanometer-Sized Electronic Devices The possible use of carbon nanotubes in nanoelectronics has aroused considerable interest. Dramatic recent advances have fueled speculation that nanotubes (SWNTs) will be useful for downsizing circuit dimensions. Because of their unique electronic properties, SWNTs can be interfaced with other materials to form novel heterostructures [156]. The simplest device one can imagine with carbon nanotubes is that involving a bend or a kink, arising from the presence of a diametrically opposite pentagon-heptagon pair. The resultant junction connects two nanotubes of different chirality and hence of different electronic structure, leading to the realization of an intramolecular device. Such a device in SWNTs is found to behave like a diode rectifier [157]. Silicon nanowire-carbon nanotube heterojunctions do indeed exhibit a rectification behavior [158]. 

A supercapacitor with properties of optical transparency and mechanical flexibility was reported by Chen et al. It was fabricated using metal oxide nanowire/carbon nanotube (CNT) heterogeneous film. It could achieve a power density of 7.48 kW/kg and after a large number of cycles, its capacity... 

Weng B, Liu S, Zhang N, Tang Z-R, Xu Y-J (2014) A simple yet efficient visible-light-driven CdS nanowires-carbon nanotube ID-ID nanocomposite photocatalyst. J Catal 309 146-155... 

In general, nanotechnology MBBs are distinguished for their unique properties. They include, for example, graphite, fullerene molecules made of various numbers of carbon atoms (C60, C70, C76, C240, etc.), carbon nanotubes, nanowires, nanocrystals, amino acids, and diamondoids [97]. All these molecular building blocks are candidates for various applications in nanotechnology. 

Apart from the traditional organic and combinatorial/high-throughput synthesis protocols covered in this book, more recent applications of microwave chemistry include biochemical processes such as high-speed polymerase chain reaction (PCR) [2], rapid enzyme-mediated protein mapping [3], and general enzyme-mediated organic transformations (biocatalysis) [4], Furthermore, microwaves have been used in conjunction with electrochemical [5] and photochemical processes [6], and are also heavily employed in polymer chemistry [7] and material science applications [8], such as in the fabrication and modification of carbon nanotubes or nanowires [9]. 

The approaches used for preparation of inorganic nanomaterials can be divided into two broad categories solution-phase colloidal synthesis and gas-phase synthesis. Metal and semiconductor nanoparticles are usually synthesized via solution-phase colloidal techniques,4,913 whereas high-temperature gas-phase processes like chemical vapor deposition (CVD), pulsed laser deposition (PLD), and vapor transfer are widely used for synthesis of high-quality semiconductor nanowires and carbon nanotubes.6,7 Such division reflects only the current research bias, as promising routes to metallic nanoparticles are also available based on vapor condensation14 and colloidal syntheses of high-quality semiconductor nanowires.15... 

The process begins with the synthesis of different semiconductor nanomaterials (e.g., single-walled carbon nanotubes and single-crystalline nanowires/... 

Hepplestone SP, Srivastava GP (2006) The intrinsic lifetime of low-frequency zone-centre phonon modes in silicon nanowires and carbon nanotubes. Applied Surface Science 252 7726-7729. 

Seeger, H. Terrones, M. Riihle, D. R. M. Walton, H.W. Kroto, J.L. Hutchison, Alloy nanowires Invar inside carbon nanotubes, Chem. Commun., vol. 5, pp. 471-472, 2001. 

M. Terrones, Controlling high coercivities of ferromagnetic nanowires encapsulated in carbon nanotubes, J. Mater. Chem., vol. 20, p. 5906-5914, 2010. 

X. Zhao, Y. Ando, Y. Liu, M. Jinno, T. Suzuki, Carbon nanowire made of a long linear carbon chain inserted inside a multiwalled carbon nanotube, Phys. Rev. Lett., vol. 90, p. 187401, 2003. 

Sainsbury, T. and D. Fitzmaurice, Carbon-nanotube-templated and pseudorotaxane-formation-driven gold nanowire self-assembly. Chemistry of Materials, 2004.16(11) p. 2174-2179. 

Day, T.M., et al., Electrochemical templating of metal nanoparticles and nanowires on single-walled carbon nanotube networks. Journal of the American Chemical Society, 2005.127(30) p. 10639-10647. 

Peng, Y. and Q. Chen, Fabrication of copper/multi-walled carbon nanotube hybrid nanowires using electroless copper deposition activated with silver nitrate. Journal of The Electrochemical Society, 2012.159(2) p. D72-D76. 

Kim, H. and W. Sigmund, Zinc oxide nanowires on carbon nanotubes. Applied Physics Letters, 2002. 81(11) p. 2085-2087. 

Hsu, C.-Y., et ah, Supersensitive, ultrafast, and broad-band tight-harvesting scheme employing carbon nanotube/Ti02 core-shell nanowire geometry. ACS Nano, 2012. 6(8) p. 6687-6692. 

The nanowires in Fig. 10.5, straight and coiled, are believed to be SiNW. Experiments were performed to verify that they were not carbon nanotubes or metal nanorods. One method to prove this was by using a substrate other than Si. In this case, AI2O3 wafers replaced Si as the substrate to avoid interference from the Si substrate for characterization. The SiNW grown on Si are shown in Fig. 10.11, and those grown on the AI2O3 wafer are shown in Fig. 10.12. Characterization of these nanowires yielded that they were SiNW. 

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