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Carbon Nanotubes (CNTs) are one of the most important materials in nanotechnology. In some of their technological applications (electromechanical oscillators and mechanical actuators for artificial muscles, for instance), it is necessary to…

Mesoscale and Nanoscale Physics · Physics 2015-10-02 Jose M. de Sousa , Pedro A. S. Autreto , Douglas S. Galvao

In cavity quantum electrodynamics, optical emitters that are strongly coupled to cavities give rise to polaritons with characteristics of both the emitters and the cavity excitations. We show that carbon nanotubes can be crystallized into…

We use ab initio total-energy calculations to predict the existence of polarons in semiconducting carbon nanotubes (CNTs). We find that the CNTs' band edge energies vary linearly and the elastic energy increases quadratically with both…

Materials Science · Physics 2009-10-31 Marcos Verissimo-Alves , R. B. Capaz , Belita Koiller , Emilio Artacho , H. Chacham

Water, when confined at the nanoscale acquires extraordinary transport properties. And yet there is no direct experimental evidence of these properties at nanoscale resolution. Here, by using 2D NMR diffusion-relaxation (D-T2) and…

Bilayer electron-hole systems undergo excitonic condensation when the distance d between the layers is smaller than the typical distance between particles within a layer. All excitons in this condensate have a fixed dipole moment which…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Yogesh N. Joglekar , Alexander V. Balatsky , Michael P. Lilly

The transport properties of a CNT capacitively coupled to a molecule vibrating along one of its librational modes are studied and its transport properties analyzed in the presence of an STM tip. We evaluate the linear charge and thermal…

Mesoscale and Nanoscale Physics · Physics 2013-09-12 F. Remaggi , N. Traverso Ziani , G. Dolcetto , F. Cavaliere , M. Sassetti

Understanding and controlling the nanoscale transport of excitonic quasiparticles in atomically thin 2D semiconductors is crucial to produce highly efficient nano-excitonic devices. Here, we present a nano-gap device to selectively confine…

The complete energy expression of a deformed single-walled carbon nanotube (SWNT) is derived in the continuum limit from the local density approximation model proposed by Lenosky {\it et al.} \lbrack Nature (London) {\bf 355}, 333…

Materials Science · Physics 2007-05-23 Zhan-chun Tu , Zhong-can Ou-Yang

Directional detection of Dark Matter (DM) particles could be accomplished by studying either ion or electron recoils in large arrays of parallel carbon nanotubes. For instance, a MeV mass DM particle could scatter off a lattice electron,…

Instrumentation and Detectors · Physics 2020-05-20 G Cavoto , M G Betti , C Mariani , F Pandolfi , A D Polosa , I Rago , A Ruocco

The heat flux autocorrelation functions of carbon nanotubes (CNTs) with different radius and lengths is calculated using equilibrium molecular dynamics. The thermal conductance of CNTs is also calculated using the Green-Kubo relation from…

Materials Science · Physics 2009-11-10 Zhenhua Yao , Jian-Sheng Wang , Baowen Li , Gui-Rong Liu

The present work encompasses an investigation of the adsorption properties of small dimer species onto a zigzag single walled carbon nanotube (ZNT for short). To perform this analysis we have considered the zigzag (8, 0) system with a…

Chemical Physics · Physics 2008-05-30 Aned de Leon

We calculate the diameter and chirality dependences of the binding energies, sizes, and bright-dark splittings of excitons in semiconducting single-wall carbon nanotubes (SWNTs). Using results and insights from {\it ab initio} calculations,…

Materials Science · Physics 2009-11-11 Rodrigo B. Capaz , Catalin D. Spataru , Sohrab Ismail-Beigi , Steven G. Louie

In condensed-matter physics, remarkable advances have been made with atomic systems by establishing a thorough control over cooling and trapping techniques. In semiconductors, this method may also provide a deterministic approach to reach…

Mesoscale and Nanoscale Physics · Physics 2012-02-16 M. Alloing , A. Lemaitre , E. Galopin , F. Dubin

Using plasma-enhanced chemical vapor deposition (PECVD) with Acetylene and Ammoniac on Pd-specimens Carbon nanotubes (CNT) could be produced successfully. Two different devices are compared and the conditions for best growth conditions are…

Materials Science · Physics 2015-06-24 Wilfried Wunderlich , Masaki Tanemura

The recent development of efficient chirality sorting techniques has opened the way to the use of single-walled carbon nanotubes (SWCNTs) in a plethora of nanoelectronic, photovoltaic, and optoelectronic applications. However, to understand…

Mesoscale and Nanoscale Physics · Physics 2019-12-25 María Rosa Preciado-Rivas , Victor Alexander Torres-Sánchez , Duncan J. Mowbray

This investigation deals with the effect of growth temperature on the growth behavior of Fe filled multiwalled carbon nanotubes (MWCNTs). Carbon nanotube (CNT) synthesis was carried out in a thermal chemical vapor deposition (CVD) reactor…

Materials Science · Physics 2019-08-07 Joydip Sengupta , Chacko Jacob

Using Monte Carlo simulations, we investigate the possibility of an orientational melting transition within a "rope" of (10,10) carbon nanotubes. When twisting nanotubes bundle up during the synthesis, orientational dislocations or twistons…

Materials Science · Physics 2009-10-31 Young-Kyun Kwon , David Tomanek

Theory predicts peculiar features for excited-state dynamics in one dimension (1D) that are difficult to be observed experimentally. Single-walled carbon nanotubes (SWNTs) are an excellent approximation to 1D quantum confinement, due to…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Giancarlo Soavi , Francesco Scotognella , Daniele Viola , Timo Hefner , Tobias Hertel , Giulio Cerullo , Guglielmo Lanzani

We review recent experiments on dewetting thin films of evaporating colloidal nanoparticle suspensions (nanofluids) and discuss several theoretical approaches to describe the ongoing processes including coupled transport and phase changes.…

Carbon nanotube (CNT) electromechanical resonators have demonstrated unprecedented sensitivities for detecting small masses and forces. The detection speed in a cryogenic setup is usually limited by the CNT contact resistance and parasitic…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 Kyle Willick , Xiaowu Tang , Jonathan Baugh