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Graphene monolayer grown by Si evaporation from the 0001 surface of SiC displays a moir\'e pattern of corrugation whose structure is ambiguous: different measurements and theoretical studies show either protruding bumps surrounded by…

Mesoscale and Nanoscale Physics · Physics 2018-04-27 Tommaso Cavallucci , Valentina Tozzini

Photonic crystal nanocavities are used to enhance photoluminescence from single-walled carbon nanotubes. Micelle-encapsulated nanotubes are deposited on nanocavities within Si photonic crystal slabs and confocal microscopy is used to…

Mesoscale and Nanoscale Physics · Physics 2012-10-12 R. Watahiki , T. Shimada , P. Zhao , S. Chiashi , S. Iwamoto , Y. Arakawa , S. Maruyama , Y. K. Kato

With the empirical bond polarizability model, the nonresonant Raman spectra of the chiral and achiral single-wall carbon nanotubes (SWCNTs) under uniaxial and torsional strains have been systematically studied by \textit{ab initio} method.…

Mesoscale and Nanoscale Physics · Physics 2007-07-31 Gang Wu , Jian Zhou , Jinming Dong

We investigate the stable structures of Fe-filled single-walled carbon nanotubes (SWNTs) on Ni(111), using density functional theory calculations. We find stable geometries and electronic states for the nanotube on Ni(111). We propose the…

Materials Science · Physics 2009-11-11 Melanie David , Tomoya Kishi , Masanori Kisaku , Hiroshi Nakanishi , Hideaki Kasai

Insights to the mechanism of CdSe nanoparticle attachment to carbon nanotubes following the hot injection method are discussed. It was observed that the presence of water improves the nanotube coverage while Cl containing media are…

Materials Science · Physics 2015-07-20 Beatriz H. Juarez , Michaela Meyns , Alina Chanaewa , Yuxue Cai , Christian Klinke , Horst Weller

Chemical vapor deposition synthesis of single-walled carbon nanotubes experiments, using Fe catalyst, and alternating methane and carbon monoxide as carbon feedstocks, lead to the reversible formation of junctions between tubes of different…

Deformations of single-wall carbon nanotubes are investigated within the tight-binding model with deformation-dependent hopping energies. We show that the nanotubes tend to twist and shrink spontaneously at zero temperature. The explicit…

Mesoscale and Nanoscale Physics · Physics 2017-07-05 Vít Jakubský , Axel Pérez-Obiol

Transparent and conductive films (TCFs) are of great technological importance. The high transmittance, electrical conductivity and mechanical strength make single-walled carbon nanotubes (SWCNTs) a good candidate for their raw material.…

New carbon forms exhibiting extraordinary physico-chemical properties can be generated from nanostructured precursors under extreme pressure. Nevertheless, synthesis of such fascinating materials is often not well understood that results,…

Nitrogen doped single wall carbon nanotubes have many functional benefits. Doping opens the possibility to control the electronic energy levels, surface energy, surface reactivity and charge carrier density. The additional electron in the…

Materials Science · Physics 2021-02-01 Filippo Fedi , Oleg Domanov , Paola Ayala , Thomas Pichler

Coatings comprised of carbon nanotubes are very black; that is, characterized by low reflectance over a broad wavelength range from the visible to far infrared. Arguably there is no other material that is comparable. This is attributable to…

Applied Physics · Physics 2017-10-04 J. Lehman , C. Yung , N. Tomlin , D. Conklin , M. Stephens

The use of optics in microelectronic circuits to overcome the limitation of metallic interconnects is more and more considered as a viable solution. Among future silicon compatible materials, carbon nanotubes are promising candidates thanks…

The functionalization of single-walled carbon nanotubes (SWCNTs) with luminescent sp$^{3}$ defects has greatly improved their performance in applications such as quantum light sources and bioimaging. Here, we report the covalent…

Using a first-principles total energy methodology, we investigated the properties of graphene-like carbon mono and bilayers, functionalized with nitrogen and boron atoms. The resulting stable structures were explored in terms of their…

Materials Science · Physics 2019-09-12 B. Ipaves , J. F. Justo , L. V. C. Assali

Carbon nanotubes are a feverishly-studied topic in the scientific community as of late. Mathematically, they can be modeled with a quantum graph. Here we consider a structure somewhat similar to carbon nanotubes, another quantum graph that…

Mathematical Physics · Physics 2016-01-26 Jeremy Tillay

We use scanning tunneling microscopy and spectroscopy to study epitaxial graphene grown on a C-face 4H-SiC(000-1) substrate. The results reveal amazing nano-objects at the graphene/SiC interface leading to electronic interface states. Their…

Mesoscale and Nanoscale Physics · Physics 2009-11-12 S. Vizzini , H. Enriquez , S. Chiang , H. Oughaddou , P. Soukiassian

Recent fluorescence spectroscopy experiments on single wall carbon nanotubes reveal substantial deviations of observed absorption and emission energies from predictions of noninteracting models of the electronic structure. Nonetheless, the…

Materials Science · Physics 2009-11-10 C. L. Kane , E. J. Mele

We have studied the electronic structure and charge-carrier dynamics of individual single-wall carbon nanotubes (SWNTs) and nanotube ropes using optical and electron-spectroscopic techniques. The electronic structure of semiconducting SWNTs…

Materials Science · Physics 2009-11-10 A. Hagen , G. Moos , V. Talalaev , J. W. Tomm , T. Hertel

The crystallographic structure of CdSe nanoparticles attached to carbon nanotubes has been elucidated by means of high resolution transmission electron microscopy and high angle annular dark field scanning transmission electron microscopy…

Materials Science · Physics 2015-07-20 Ana B. Hungria , Paul A. Midgley , Beatriz H. Juarez , Christian Klinke , Horst Weller

An extensive first-principles study of fully exo-hydrogenated zigzag (n,0) and armchair (n,n) single wall carbon nanotubes (C$_n$H$_n$), polyhedral molecules including cubane, dodecahedrane, and C$_{60}$H$_{60}$ points to crucial…

Materials Science · Physics 2016-08-16 T. Yildirim , O. Gülseren , S. Ciraci