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Having access to the chemical environment at the atomic level of a dopant in a nanostructure is crucial for the understanding of its properties. We have performed atomically-resolved electron energy-loss spectroscopy to detect individual…

Tweaking the properties of carbon nanotubes is a prerequisite for their practical applications. Here we demonstrate fine-tuning the electronic properties of single-wall carbon nanotubes via filling with ferrocene molecules. The evolution of…

In this work, phosphorous-doped single-walled carbon nanotubes have been synthesized by the thermal decomposition of trimethylphosphine using a high-vacuum chemical vapor deposition method. Furthermore, a modified…

Materials Science · Physics 2016-01-28 Georgina Ruiz-Soria , Toma Susi , Markus Sauer , Kazuhiro Yanagi , Thomas Pichler , Paola Ayala

We present ab initio calculations on the band structure and density of states of single wall semiconducting carbon nanotubes with high degrees (up to 25%) of B, Si and N substitution. The doping process consists of two phases: different…

Mesoscale and Nanoscale Physics · Physics 2015-01-13 E. Tetik

We investigate the field emission properties of nitrogenated and boronated carbon nanotubes using time-dependent density functional theory, were the wave function propagation is performed using the Crank-Nicholson algorithm. We extract the…

Materials Science · Physics 2015-05-20 Sherif Tawfik , Salah Sheikh , Noha Salem

The charge transport properties of individual, metallic nitrogen doped, single-walled carbon nanotubes are investigated. It is demonstrated that n-type conduction can be achieved by nitrogen doping. Evidence was obtained by appealing to…

Materials Science · Physics 2009-11-11 V. Krstic , G. L. J. A. Rikken , P. Bernier , S. Roth , M. Glerup

Single-walled carbon nanotubes are a promising material as quantum light sources at room temperature and as nanoscale light sources for integrated photonic circuits on silicon. Here we show that integration of dopant states in carbon…

Mesoscale and Nanoscale Physics · Physics 2018-08-24 A. Ishii , X. He , N. F. Hartmann , H. Machiya , H. Htoon , S. K. Doorn , Y. K. Kato

The synthesis of Ni filled multiwalled carbon nanotubes was performed by atmospheric pressure chemical vapor deposition with propane on Si at 850 C using a simple mixture of Ni(salen), and a conventional photoresist. Analysis of the carbon…

Applied Physics · Physics 2019-08-14 Joydip Sengupta , Avijit Jana , N D Pradeep Singh , C Mitra , Chacko Jacob

Using first-principles calculations, we investigate the electronic structures and binding properties of nicotine and caffeine adsorbed on single-walled carbon nanotubes to determine whether CNTs are appropriate for filtering or sensing…

Mesoscale and Nanoscale Physics · Physics 2013-07-10 Hyung-June Lee , Gunn Kim , Young-Kyun Kwon

The phosphorus-doped single wall carbon nanotube (PSWCNT) is studied by using First-Principle methods based on Density Function Theory (DFT). The formation energy, total energy, band structure, geometry structure and density of states are…

Mesoscale and Nanoscale Physics · Physics 2011-08-10 AQing Chen , QingYi Shao , ZhiCheng Lin

A boost in the development of flexible and wearable electronics facilitates the design of new materials to be applied as transparent conducting films (TCFs). Although single-walled carbon nanotube (SWCNT) films are the most promising…

Carbon nanotubes play a fundamental role in the rapidly developing field of nanoscience and nanotechnology because of their unique properties and high potential applictions. In this article, the different synthesis method of CNTs are…

Materials Science · Physics 2007-05-23 Kalpana Awasthi , Anchal Srivastava , O. N. Srivastava

Carbon nanotubes are one-dimensional and very narrow. These obvious facts imply that under doping with boron and nitrogen, microscopic doping inhomogeneity is much more important than for bulk semiconductors. We consider the possibility of…

Materials Science · Physics 2009-11-07 Paul E. Lammert , Vincent H. Crespi , Angel Rubio

A first-principles investigation of the electronic and quantum transport properties of double-walled carbon nanotubes doped with nitrogen and boron atoms is presented. Concentric nanotube sidewalls separated by the typical graphitic van der…

Materials Science · Physics 2016-03-24 Alejandro Lopez-Bezanilla

We present a detailed electron diffraction study of individual single-walled carbon nanotubes. A novel sample preparation procedure provides well-separated, long and straight individual single-shell nanotubes. Diffraction experiments are…

Materials Science · Physics 2007-05-23 Jannik C. Meyer , Matthieu Paillet , Georg S. Duesberg , Siegmar Roth

In monolayer graphene, substitutional doping during growth can be used to alter its electronic properties. We used scanning tunneling microscopy (STM), Raman spectroscopy, x-ray spectroscopy, and first principles calculations to…

We report on a dry transfer technique for single wall carbon nanotube devices which allows to embed them in high finesse microwave cavity. We demonstrate the ground state charge readout and a quality factor of about 3000 down to the single…

Mesoscale and Nanoscale Physics · Physics 2014-04-02 J. J. Viennot , J. Palomo , T. Kontos

A simple process for chemical vapor deposition of ultra SD single wall carbon nanotubes has been developed. In this process, an iron nitrate nonahydrate solution in isopropyl alcohol with a concentration of 400 ug/mlit was used to catalyze…

Mesoscale and Nanoscale Physics · Physics 2012-07-17 Nima Arjmandi , Pejhman Sasanpour , Bijan Rashidian

Towards the development of a useful mechanism for hydrogen storage, we have studied the hydrogenation of single-walled carbon nanotubes with atomic hydrogen using core-level photoelectron spectroscopy and x-ray absorption spectroscopy. We…

We use computational screening to systematically investigate the use of transition metal doped carbon nanotubes for chemical gas sensing. For a set of relevant target molecules (CO, NH3, H2S) and the main components of air (N2, O2, H2O), we…

Mesoscale and Nanoscale Physics · Physics 2010-06-28 J. M. García-Lastra , D. J. Mowbray , K. S. Thygesen , A. Rubio , K. W. Jacobsen
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