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Low-dimensional materials such as layered semiconductors or carbon nanotubes (CNTs) have been attracting increasing attention in the last decades due to their inherent scaling properties, which become fundamental to sustain the scaling in…

介观与纳米尺度物理 · 物理学 2019-04-23 Marta Perucchini , Enrique G. Marin , Damiano Marian , Giuseppe Iannaccone , Gianluca Fiori

Substantial progress on field effect transistors "FETs" consisting of semiconducting single wall carbon nanotubes "s-SWNTs" without detectable traces of metallic nanotubes and impurities is reported. Nearly perfect removal of metallic…

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…

材料科学 · 物理学 2007-08-15 K. -S. Lin , Ruey-Bing Li , Frank Lee , Li-Cheng Lou , Su-Wei Chiu

Single electron transistors (SETs) made from single wall carbon nanotubes (SWCNTs) are promising for quantum electronic devices operating with ultra-low power consumption and allow fundamental studies of electron transport. We report on…

介观与纳米尺度物理 · 物理学 2017-05-09 Nan Ai , Onejae Sul , Milan Begliarbekov , Qiang Song , Kitu Kumar , Daniel S. Choi , Eui-Hyeok Yang , Stefan Strauf

Three-terminal devices with conduction channels formed by quasi-metallic carbon nanotubes (CNT) are shown to operate as nanotube-based field-effect transistors under strong magnetic fields. The off-state conductance of the devices varies…

We report that entirely end-bonded multi-walled carbon nanotubes (MWNTs) can show superconductivity with the transition temperature Tc as high as 12K that is approximately 40-times larger than those reported in ropes of single-walled…

超导电性 · 物理学 2009-11-11 I. Takesue , J. Haruyama , N. Kobayashi , S. Chiashi , S. Maruyama , T. Sugai , H. Shinohara

The superconductivity of the 4-angstrom single-walled carbon nanotubes (SWCNTs) was discovered more than a decade ago, and marked the breakthrough of finding superconductivity in pure elemental undoped carbon compounds. The van Hove…

超导电性 · 物理学 2017-07-18 C. H. Wong , E. A. Buntov , R. E. Kasimova , A. F. Zatsepin

We performed a comprehensive scaling study of Schottky barrier carbon nanotube transistors using self-consistent, atomistic scale simulations. We restrict our attention to Schottky barrier carbon nanotube FETs whose metal source/drain is…

介观与纳米尺度物理 · 物理学 2009-11-10 Jing Guo , Supriyo Datta , Mark Lundstrom

Single-walled carbon nanotubes (SWCNTs) are quasi-one-dimensional systems with poor Coulomb screening and enhanced electron-phonon interaction, and are good candidates for excitons and exciton-phonon couplings in metallic state. Here we…

材料科学 · 物理学 2009-04-20 Hualing Zeng , Hongbo Zhao , Fu-Chun Zhang , Xiaodong Cui

A method is introduced to isolate and measure the electrical transport properties of individual single-walled carbon nanotubes (SWNTs) aligned on an ST-cut quartz, from room temperature down to 2 K. The diameter and chirality of the…

介观与纳米尺度物理 · 物理学 2014-08-26 Tohru Watanabe , El-Hadi S. Sadki , Takahide Yamaguchi , Yoshihiko Takano

We show that carbon nanotube transistors operate as unconventional "Schottky barrier transistors", in which transistor action occurs primarily by varying the contact resistance rather than the channel conductance. Transistor characteristics…

材料科学 · 物理学 2016-08-31 S. Heinze , J. Tersoff , R. Martel , V. Derycke , J. Appenzeller , Ph. Avouris

Their outstanding electrical and optical properties make semiconducting single-walled carbon nanotubes (SWCNTs) highly suitable for charge transport and emissive layers in near-infrared optoelectronic devices. However, the luminescence…

This paper proposes a bottom-up sequence of modeling steps leading to a nanoscopically informed continuum, and as such macroscopic, theory of single-walled carbon nanotubes (SWCNTs). We provide a description of the geometry of the two most…

介观与纳米尺度物理 · 物理学 2011-11-22 Chandrajit Bajaj , Antonino Favata , Paolo Podio-Guidugli

Double-walled carbon nanotubes (DWCNTs) with high graphitization have been synthesized by hydrogen arc discharge. The obtained DWCNTs have a narrow distribution of diameters of both the inner and outer tubes, and more than half of the…

材料科学 · 物理学 2011-05-17 Lei Shi , Leimei Sheng , Liming Yu , Kang An , Yoshinori Ando , Xinluo Zhao

A fresh look on carbon-based transistor channel materials like single-walled carbon nanotubes (CNT) and graphene nanoribbons (GNR) in future electronic applications is given. Although theoretical predictions initially promised that GNR…

材料科学 · 物理学 2014-03-26 Franz Kreupl

Short channel (~80 nm) n-type single-walled carbon nanotube (SWNT) field-effect transistors (FETs) with potassium (K) doped source and drain regions and high-k gate dielectrics (ALD HfO2) are obtained. For nanotubes with diameter ~ 1.6 nm…

材料科学 · 物理学 2015-06-24 Ali Javey , Ryan Tu , Damon Farmer , Jing Guo , Roy Gordon , Hongjie Dai

We develop a continuous theory of low-frequency dynamics for nanotubes with truly two-dimensional (2D) walls constituted by single-atom monolayer. In this frame topological bending elasticity of the monolayer is not related to its vanishing…

材料科学 · 物理学 2015-06-16 S. B. Rochal , V. L. Lorman , Yu. I. Yuzyuk

We show that carbon nanotube transistors exhibit scaling that is qualitatively different than conventional transistors. The performance depends in an unexpected way on both the thickness and the dielectric constant of the gate oxide.…

材料科学 · 物理学 2009-11-10 S. Heinze , M. Radosavljevic , J. Tersoff , Ph. Avouris

The thermal transport properties of single-wall carbon nanotubes (SWCNTs) are re-investigated using the iterative solution of the Boltzmann transport equation by including four-phonon scattering. Using only three-phonon scattering, the…

材料科学 · 物理学 2023-11-07 Ankit Jain

Effect of contact interfaces, between metallic single-wall carbon nanotubes (SWCNT) and external electrodes made also of nanotubes, on the electrical conductance is studied. A tight-binding model with both diagonal and off-diagonal…

介观与纳米尺度物理 · 物理学 2015-06-24 S. Krompiewski