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We discuss the local cutting of single-walled carbon nanotubes by a voltage pulse to the tip of a scanning tunneling microscope. The tip voltage ($\mid V \mid \ge $~3.8 eV) is the key physical quantity in the cutting process. After…

材料科学 · 物理学 2009-10-31 Angel Rubio , S. Peter Apell , Liesbeth C. Venema , Cees Dekker

Large area carbon nanotube (CNT) cathodes made from yarns, films or fibers have long been promising as next generation electron sources for high power radio frequency (rf) and microwave vacuum electronic devices. However, experimental…

应用物理 · 物理学 2023-01-18 Taha Y. Posos , Sergey V. Baryshev

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…

材料科学 · 物理学 2015-07-20 Ana B. Hungria , Paul A. Midgley , Beatriz H. Juarez , Christian Klinke , Horst Weller

We use an atom-atom potential between carbon atoms to obtain an interaction potential between nanotubes (assumed rigid), thereby calculating the cohesive energy of a bunch of nanotubes in hexagonal two dimensional packing. The model…

材料科学 · 物理学 2007-05-23 V. K. Jindal , Shuchi Gupta , K. Dharamvir

The formation of monodisperse, tunable sized, alloyed nanoparticles of Ni, Co, or Fe with Pt and pure Pt nanoparticles attached to carbon nanotubes has been investigated. Following homogeneous nucleation, nanoparticles attach directly to…

We investigate the growth of the recently demonstrated composite material composed of vertically aligned carbon nanotubes capped by few graphene layers. We show that the carbon nanotubes grow epitaxially under the few graphene layers. By…

材料科学 · 物理学 2011-03-24 V. Jousseaume , J. Cuzzocrea , N. Bernier , Vincent Thomas Francois Renard

Miniaturizing nonlinear optical components is essential for integrating advanced light manipulation into compact photonic devices, enabling scalable and cost-effective applications. While monocrystalline lithium niobate thin films advance…

光学 · 物理学 2024-09-26 Ülle-Linda Talts , Helena C. Weigand , Irene Occhiodori , Rachel Grange

The interactions of charged particles with carbon nanotubes may excite electromagnetic modes in the electron gas produced in the cylindrical graphene shell constituting the nanotube wall. This wake effect has recently been proposed as a…

加速器物理 · 物理学 2023-12-18 P. Martín-Luna , A. Bonatto , C. Bontoiu , G. Xia , J. Resta-López

The pressure response of double-wall carbon nanotubes has been investigated by means of Raman spectroscopy up to 10 GPa. The intensity of the radial breathing modes of the outer tubes decreases rapidly but remain observable up to 9 GPa,…

The advancements of nanomaterials or nanostructures have enabled the possibility of fabricating multifunctional materials that hold great promises in engineering applications. The carbon nanotube (CNT)-based nanostructure is one…

计算物理 · 物理学 2015-05-22 Haifei Zhan , John M. Bell , Yuantong Gu

This research for Eco-materials focuses on the improvement of photo response of titania thin films. The goal of this research is to find a suitable substrate for decreasing the band-gap of titania, to improve the microstructure and to seek…

材料科学 · 物理学 2007-05-23 Wilfried Wunderlich , Nguyen Thi Hue , Sakae Tanemura

In this article, we conduct comparative studies on the optical properties of metallic carbon nanotubes. Firstly, we compare the complex dielectric constant predicted by an analytical model, the Linear Surface Conductivity Model, with…

Two paramount challenges in carbon nanotube research are achieving chirality-controlled synthesis and understanding chirality-dependent device physics. High-throughput and in-situ chirality and electronic structural characterization of…

介观与纳米尺度物理 · 物理学 2015-06-16 Kaihui Liu , Xiaoping Hong , Qin Zhou , Chenhao Jin , Jinghua Li , Weiwei Zhou , Jie Liu , Enge Wang , Alex Zettl , Feng Wang

We show that a carbon nanotube can serve as a functional electric weak link performing photo-spintronic transduction. A spin current, facilitated by strong spin-orbit interactions in the nanotube and not accompanied by a charge current, is…

介观与纳米尺度物理 · 物理学 2017-10-25 R. I. Shekhter , O. Entin-Wohlman , M. Jonson , A. Aharony

During laser micro-polishing, the constant control of laser energy density is a key technology to improve the surface roughness. In this paper, a method which controls the energy density of UV(ultraviolet) pulse laser in real time with the…

光学 · 物理学 2014-11-20 Pong-Ryol Jang , Tae-Sok Jang , Kum-Hyok Ji , Nam-Chol Kim

The incorporation of graphene-related materials as nanofiller can produce multifunctional foams with enhanced specific properties and density reduction. Herein we report on the preparation of microcellular thermoplastic…

Structural and thermal characteristics of crystalline ropes of single-wall carbon nanotubes (SWCNTs) are investigated. Novel crystalline ropes of polygonized SWCNTs produced by laser irradiation exhibit rounded-hexagonal cross sections in…

材料科学 · 物理学 2015-10-28 M. J. Lopez , A. Rubio , J. A. Alonsos

We present a fabrication scheme called 'fork stamping' optimized for the dry transfer of individual pristine carbon nanotubes (CNTs) onto ferromagnetic contact electrodes fabricated by standard lithography. We demonstrate the detailed…

介观与纳米尺度物理 · 物理学 2016-01-06 J. Gramich , A. Baumgartner , M. Muoth , C. Hierold , C. Schönenberger

Carbon nanotube (CNT) fiber is formed by assembling millions of individual tubes. The assembly feature provides the fiber with rich interface structures and thus various ways of energy dissipation, as reflected by the non-zero loss tangent…

材料科学 · 物理学 2015-11-18 Jingna Zhao , Xiaohua Zhang , Zhijuan Pan , Qingwen Li

Carbon nanotubes have been observed to emit ultraviolet, visible, and infrared radiation when exposed to microwave fields. We have performed experiments in which both single-walled (~1 nm diameters) and multi-walled carbon nanotubes (>50 nm…

材料科学 · 物理学 2015-06-04 S. Ferguson , N. McGara , B. Cavness , D. Gonzales , S. Williams
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