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Coiled Carbon Nanotubes (CCNTs) are increasingly set to become a vital factor in the new generation of nanodevices and energy-absorbing materials due to their outstanding properties. In the following work, the multi-objective optimization…

Materials Science · Physics 2021-03-16 Ehsan Shahini , Fazel Rangriz , Ali Karimi Taheri

Controlled growth, patterning and placement of carbon nanotube (CNT) thin films for electronic applications are demonstrated. The density of CNT films is controlled by optimizing the feed gas composition as well as the concentration of…

Materials Science · Physics 2015-05-18 V. K. Sangwan , V. W. Ballarotto , D. R. Hines , M. S. Fuhrer , E. D. Williams

We study the transport property for armchair-edge graphene nanoribbons (AGNRs) with an adatom coupling to a semi-infinite quantum wire. Using the nonequilibrium Green's function approach with tight-binding approximation, we demonstrate that…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Xiongwen Chen , Kehui Song , Benhu Zhou , Haiyan Wang , Guanghui Zhou

Although individual carbon nanotubes (CNTs) are superior as constituents to polymer chains, the mechanical and thermal properties of CNT fibers (CNTFs) remain inferior to commercial synthetic fibers due to the lack of synthesis methods to…

We theoretically study the magnetoresistance of single wall carbon nanotubes (SWCNTs) in the ballistic transport regime, using a standard tight-binding approach. The main attention is directed to spin-polarized electrical transport in the…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 S. Krompiewski , Gianaurelio Cuniberti

The electron transport through the nanotube junctions which connect the different metallic nanotubes by a pair of a pentagonal defect and a heptagonal defect is investigated by Landauer's formula and the effective mass approximation. From…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Ryo Tamura , Masaru Tsukada

We investigate the effects of magnetic and electric fields on electron wavefunction interactions in single walled carbon nanotube bundles. The magnetoresistance measurements performed at 4.2K and the dependence of the data upon the electric…

Mesoscale and Nanoscale Physics · Physics 2010-09-15 M. Salvato , M. Lucci , I. Ottaviani , M. Cirillo , S. Orlanducci , F. Toschi , M. L. Terranova

The robustness of topological materials against disorder and defects is presumed but has not been demonstrated explicitly in realistic systems. In this work, we use state-of-the-art density functional theory and recursive nonequilibrium…

Mesoscale and Nanoscale Physics · Physics 2021-01-27 Armando Pezo , Bruno Focassio , Gabriel R. Schleder , Marcio Costa , Caio Lewenkopf , Adalberto Fazzio

The Green functions play a big role in the calculation of the local density of states of the carbon nanostructures. We investigate their nature for the variously oriented and disclinated graphene-like surface. Next, we investigate the case…

Mesoscale and Nanoscale Physics · Physics 2015-11-10 J. Smotlacha , R. Pincak , M. Pudlak

The influence of local magnetic moment formation around three kinds of vacancies on the electron conduction through metallic single-wall carbon nanotubes is studied by use of the Landauer formalism within the coherent regime. The method is…

Mesoscale and Nanoscale Physics · Physics 2010-06-18 R. Farghadan , A. Saffarzadeh

Super-aligned carbon nanotube (CNT) films have intriguing anisotropic thermal transport properties due to the anisotropic nature of individual nanotubes and the important role of nanotube alignment. However, the relationship between the…

Applied Physics · Physics 2020-02-06 Wei Yu , Xinpeng Zhao , Puqing Jiang , Changhong Liu , Ronggui Yang

A complex approach phonon quantum discrete model (PQDM) was developed to describe dynamics, kinetics and statistics of phonons in carbon nanostructures with zero-chirality of both zig-zag and armchair geometry. The model allows include into…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 E. Ya. Glushko , V. N. Evteev , M. V. Moiseenko , N. A. Slusarenko , A. A. Zakhidov

Carbon nanotubes (CNTs) are a promising material for high-performance electronics beyond silicon. But unlike silicon, the nature of the transport band gap in CNTs is not fully understood. The transport gap in CNTs is predicted to be…

In this letter we perform an experimental study of ionic transport and current fluctuations inside individual Carbon Nanotubes (CNT). The conductance exhibits a power law behavior at low salinity, with an exponent close to 1/3 versus the…

Soft Condensed Matter · Physics 2016-04-20 E. Secchi , A. Nigues , L. Jubin , A. Siria , L. Bocquet

Compression of greenhouse gases still dominates the market of refrigeration devices. Although well stablished and efficient, this technology is neither safe for the environment nor able to be scaled down to nanoscale. Solid-state cooling…

Mesoscale and Nanoscale Physics · Physics 2022-10-14 Tatiana Naomi Yamamoto Silva , Alexandre F. Fonseca

The study of the mechanical properties of nanostructured systems has gained importance in theoretical and experimental research in recent years. Carbon nanotubes (CNTs) are one of the strongest nanomaterials found in nature, with Young's…

Carbon nanotubes (CNTs) have attracted increasing attention because of their unique structural, mechanical, and electronic properties. Surface chemistry modifications are also useful and critical to manipulate the adsorptive properties of…

Materials Science · Physics 2007-08-15 K. -S. Lin , Ruey-Bing Li , Frank Lee , Li-Cheng Lou , Su-Wei Chiu

Carbon nanotube fibers are materials with an exceptional combination of properties, including higher toughness than carbon fibers, electrical conductivity above metals, large specific surface area (250 $\frac{m^2}{g}$) and high…

Applied Physics · Physics 2019-02-20 Belén Alemán , María Vila , Juan J. Vilatela

In this work we are interested to studying the Kondo effect present in a system with a $T$-shape ligation between a single-wall carbon nanotube (SWNT) and a magnetic impurity. The system has been studied under hydrostatic pressure and it…

Strongly Correlated Electrons · Physics 2019-12-16 T. Lobo , Minos A. Neto , Marcio G. da Silva , Octavio D. R. Salmon

We use classical molecular dynamics simulations to study the collapse of single (SWNT) and double-walled (DWNT) carbon nanotube bundles under hydrostatic pressure. The collapse pressure (pc) varies as 1/R^3, where R is the SWNT radius or…

Other Condensed Matter · Physics 2009-11-11 Vikram Gadagkar , Prabal K. Maiti , Yves Lansac , A. Jagota , A. K. Sood
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