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Recently unusual properties of water in single-walled carbon nanotubes (CNT) with diameters ranging from 1.05 nm to 1.52 nm were observed. It was found that water in the CNT remains in an ice-like phase even when the temperature ranges…

介观与纳米尺度物理 · 物理学 2017-03-23 Siddhartha Sen , Kumar S. Gupta

Bi-stable arched beams exhibiting Euler-Bernoulli snap-through buckling are vastly used as electronic devices in various applications, such as memory devices, energy harvesters, sensors, and actuators. Recently, we reported the realization…

介观与纳米尺度物理 · 物理学 2022-10-25 Sharon Rechnitz , Tal Tabachnik , Shlomo Shlafman , Michael Shlafman , Yuval E. Yaish

We present a Raman spectroscopy study of iodine-intercalated (p-type-doped) double-walled carbon nanotubes. Double-walled carbon nanotubes (DWCNTs) are synthesized by catalytic chemical vapor deposition and characterized by Raman…

We investigate electronic transport properties of Schottky-barrier field-effect transistors (FET) based on double-walled carbon nanotubes (DWNT) with a semiconducting outer shell and a metallic inner one. These kind of DWNT-FET show…

介观与纳米尺度物理 · 物理学 2007-07-26 Shidong Wang , Milena Grifoni

The paper aims at the development of a digital twin modelling the electrical conductivity of multi-wall carbon nanotube (MWCNT)/polymer nanocomposite. A comparative analysis is conducted for various formulations of boundary conditions in…

材料科学 · 物理学 2020-09-15 N. A. Gudkov , S. V. Lomov , I. S. Akhatov , S. G. Abaimov

We report electrical transport measurements through a semiconducting single-walled carbon nanotube (SWNT) with three additional top-gates. At low temperatures the system acts as a double quantum dot with large inter-dot tunnel coupling…

介观与纳米尺度物理 · 物理学 2009-11-11 M. R. Graeber , W. A. Coish , C. Hoffmann , M. Weiss , J. Furer , S. Oberholzer , D. Loss , C. Schoenenberger

High-density carbon nanotube networks (CNNs) continue to attract interest as active elements in nanoelectronic devices, nanoelectromechanical systems (NEMS) and multifunctional nanocomposites. The interplay between the network nanostructure…

介观与纳米尺度物理 · 物理学 2011-08-11 Myung Gwan Hahm , Hailong Wang , Hyunyoung Jung , Sanghyun Hong , Sung-Goo Lee , Sung-Ryong Kim , Moneesh Upmanyu , Yung Joon Jung

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

Water confinement inside a carbon nanotube (CNT) has been one of the most exciting subjects of both experimental and theoretical interest. Most of the previous studies, however, considered CNT structures with simple cylindrical shapes. In…

介观与纳米尺度物理 · 物理学 2020-02-03 Taehoon Kim , Gwan Woo Kim , Hyunah Jeong , Gunn Kim , Soonmin Jang

A continuous model of double-walled carbon nanotube (DWCNT) low-frequency dynamics was constructed. In the frame of the approach proposed formation of a DWCNT low-frequency phonon spectrum from the ones of corresponding single-walled carbon…

介观与纳米尺度物理 · 物理学 2016-06-22 M. V. Avramenko , S. B. Rochal

N-doped single/multi-walled carbon nanotubes (CNTs) were studied for long time from synthesis to properties. However, the stability of N in the CNT lattice still needs further developments. In this work, to obtain more stable N-doped CNTs,…

原子与分子团簇 · 物理学 2023-07-19 Lei Shi , Markus Sauer , Oleg Domanov , Philip Rohringer , Paola Ayala , Thomas Pichler

The mechanical properties of the so-called `super' carbon nanotubes (STs) are investigated using classical molecular dynamics simulations. The STs are built from single walled carbon nanotubes (SWCNTs) connected by Y-like junctions forming…

材料科学 · 物理学 2009-11-13 Vitor R. Coluci , Nicola M. Pugno , Socrates O. Dantas , Douglas S. Galvao , Ado Jorio

We report on experiments conducted on single walled carbon nanotube bundles aligned in chains and connected through a natural contact barrier. The dependence upon the temperature of the transport properties is investigated for samples…

介观与纳米尺度物理 · 物理学 2011-02-24 M. Salvato , M. Cirillo , M. Lucci , S. Orlanducci , I. Ottaviani , M. L. Terranova , F. Toschi

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…

By using a newly fitted multi-parameter potential to describe the van der Waals interaction between carbon and molecular hydrogen, we study the hydrogen storage inside carbon nanotubes (CNT's) under pressure in gigapascal range. Comparing…

材料科学 · 物理学 2007-07-09 X. H. Zhang , X. G. Gong , Z. F. Liu

We investigate the piezoresistive effect of carbon nanotubes (CNTs) within density functional theory (DFT) aiming at application-relevant CNTs. CNTs are excellent candidates for the usage in nano-electromechanical sensors (NEMS) due to…

介观与纳米尺度物理 · 物理学 2017-06-30 C. Wagner , J. Schuster , T. Gessner

Physisorption studies and transmission electron microscopy have been used to characterise multi-walled carbon nanotubes (MWNTs) made by a template-synthesis technique. Microscopic investigations revealed formation of 'branched nanotubes'…

化学物理 · 物理学 2023-05-10 M. -R. Babaa , E. Mcrae , Sandrine Delpeux , J. Ghanbaja , F. Valsaque , F. Béguin

We have discovered that the influence of the surrounding nanotubes in a bundle is similar to that of a liquid having surface tension equal to the surface energy of the nanotubes. This surprising behaviour is confirmed by the calculation of…

材料科学 · 物理学 2009-07-31 Nicola Maria Pugno

We explore the possibility and potential benefit of rolling a Si2BN sheet into single-walled nanotubes (NTs). Using density functional theory (DFT), we consider both structural stability and the impact on the nature of chemical bonding and…

介观与纳米尺度物理 · 物理学 2022-03-16 Deobrat Singh , Vivekanand Shukla , Nabil Khossossi , Per Hyldgaard , Rajeev Ahuja

Carbon nanotubes (CNTs) are a promising material for high-performance electronics beyond silicon. But unlike silicon, the nature of the transport band gap in CNTs is not fully understood. The transport gap in CNTs is predicted to be…