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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…

We measure the resistance and frequency-dependent gate capacitance of carbon nanotube (CNT) thin films in ambient, vacuum, and under low-pressure (10E-6 torr) analyte environments. We model the CNT film as an RC transmission line and show…

材料科学 · 物理学 2015-06-25 G. Esen , M. S. Fuhrer , M. Ishigami , E. D. Williams

New phenomenon of a weak energy localization of optical low-frequency oscillations in carbon nanotubes (CNT) is analytically predicted in the framework of continuum shell theory. This phenomenon takes place for CNTs of finite length with…

介观与纳米尺度物理 · 物理学 2015-06-17 Valeri V. Smirnov , Denis S. Shepelev , Leonid I. Manevitch

The flow of water in carbon nanochannels has defied understanding thus far, with accumulating experimental evidence for ultra-low friction, exceptionally high water flow rates, and curvature-dependent hydrodynamic slippage. These unique…

介观与纳米尺度物理 · 物理学 2022-02-08 Nikita Kavokine , Marie-Laure Bocquet , Lydéric Bocquet

We use discontinuous molecular dynamics and grand-canonical transition-matrix Monte Carlo simulations to explore how confinement between parallel hard walls modifies the relationships between packing fraction, self-diffusivity, partial…

软凝聚态物质 · 物理学 2009-11-13 Jeetain Mittal , Vincent K. Shen , Jeffrey R. Errington , Thomas M. Truskett

A theoretical description for the radial density profile of a finite number of identical charged particles confined in a harmonic trap is developed for application over a wide range of Coulomb coupling (or, equivalently, temperatures) and…

统计力学 · 物理学 2015-05-14 J. Wrighton , J. W. Dufty , H. Kählert , M. Bonitz

In this letter we perform an experimental study of ionic transport and current fluctuations inside individual Carbon Nanotubes (CNT). The conductance exhibits a power law behavior at low salinity, with an exponent close to 1/3 versus the…

软凝聚态物质 · 物理学 2016-04-20 E. Secchi , A. Nigues , L. Jubin , A. Siria , L. Bocquet

Single-walled carbon nanotubes (SWCNTs) in their pristine form have high thermal conductivity whose further improvement has attracted a lot of interest. Some theoretical studies have suggested that the thermal conductivity of a $(10,10)$…

材料科学 · 物理学 2020-02-11 Haikuan Dong , Zheyong Fan , Ping Qian , Tapio Ala-Nissila , Yanjing Su

In this work we examine the nucleation from NaCl aqueous solutions within nano-confined environments, employing enhanced sampling molecular dynamics simulations integrated with machine learning-derived reaction coordinates. Through our…

化学物理 · 物理学 2024-08-26 Ruiyu Wang , Pratyush Tiwary

We study the effects of covalent functionalization of single wall carbon nanotubes (CNT) on their elastic properties. We consider simple organic molecules -NH, -NH2, -CH2, -CH3, -OH attached to CNTs' surface at various densities. The…

材料科学 · 物理学 2017-09-13 Karolina Z. Milowska , Jacek A. Majewski

It has been recently shown that nanobubbles exhibit a remarkable and unexpected stability. The lifetime of nanobubbles, formed either within liquids or on hydrophobic surfaces, can exceed by more than 10 orders of magnitude the theoretical…

软凝聚态物质 · 物理学 2019-05-14 Caroline Desgranges , Jerome Delhommelle

A simple model for the friction experienced by the one dimensional water chains that flow through subnanometer diameter carbon nanotubes is studied. The model is based on a lowest order perturbation theory treatment of the friction…

流体动力学 · 物理学 2023-05-17 J. B. Sokoloff , A. W. C. Lau

Ion transport measurements are widely used as an indirect probe for various properties of confined electrolytes. It is generally assumed that the ion concentration in a nanoscale channel is equal to the ion concentration in the macroscopic…

软凝聚态物质 · 物理学 2023-04-05 Paul Robin , Adrien Delahais , Lydéric Bocquet , Nikita Kavokine

For a capacitor made of a semiconducting carbon nanotube (CNT) suspended above a metallic gate, Coulomb correlations between individual electrons can lead to a capacitance that is much larger than the geometric capacitance. We argue that…

强关联电子 · 物理学 2015-04-22 Han Fu , B. I. Shklovskii , Brian Skinner

We present quantum simulations of carbon nanotube field-effect transistors (CNT-FETs) based on top-gated architectures and compare to electrical characterization on devices with 15 nm channel lengths. A non-equilibrium Green's function…

介观与纳米尺度物理 · 物理学 2021-10-27 Alfonso Sanchez-Soares , Thomas Kelly , Giorgos Fagas , James C. Greer , Edward Chen

Using Molecular Dynamics approach we investigated the structure, dynamics of water confined inside pristine and charged 6,6 carbon nanotubes (CNTs). This study reports the breakdown of 1D water wires and the emergence of triangular faced…

软凝聚态物质 · 物理学 2016-11-23 Shashank Pant

Nanofluidics has firmly established itself as a new field in fluid mechanics, as novel properties have been shown to emerge in fluids at the nanometric scale. Thanks to recent developments in fabrication technology, artificial nanofluidic…

流体动力学 · 物理学 2020-12-01 Nikita Kavokine , Roland R. Netz , Lydéric Bocquet

Extending mode-coupling theory, we elaborate a microscopic theory for the glass transition of liquids confined between two parallel flat hard walls. The theory contains the standard MCT equations in bulk and in two dimensions as limiting…

软凝聚态物质 · 物理学 2010-09-15 Simon Lang , Vitalie Botan , Martin Oettel , David Hajnal , Thomas Franosch , Rolf Schilling

We report measurements of the non-equilibrium electron energy distribution in carbon nanotubes. Using tunneling spectroscopy via a superconducting probe, we study the shape of the local electron distribution functions, and hence energy…

介观与纳米尺度物理 · 物理学 2010-08-03 Yung-Fu Chen , Travis Dirks , Gassem Al-Zoubi , Norman Birge , Nadya Mason

Water in nanoscale cavities is ubiquitous and of central importance to everyday phenomena in geology and biology. However, the properties of nanoscale water can be remarkably different from bulk, as shown e.g., by the anomalously low…

材料科学 · 物理学 2025-01-08 Venkat Kapil , Christoph Schran , Andrea Zen , Ji Chen , Chris J. Pickard , Angelos Michaelides