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The realization of topological states of matter in ultracold atomic gases is currently the subject of intense experimental activity. Using a synthetic dimension, encoded in a non-spatial degree of freedom, can greatly simplify the…

量子气体 · 物理学 2023-12-14 Aurélien Fabre , Sylvain Nascimbene

The connection of electrical leads to wire-like molecules is a logical step in the development of molecular electronics, but also allows studies of fundamental physics. For example, metallic carbon nanotubes are quantum wires that have been…

介观与纳米尺度物理 · 物理学 2009-10-31 Jesper Nygard , David Henry Cobden , Poul Erik Lindelof

The use of tapered optical fibers, i.e., optical nanofibers, for spectroscopy and the detection of small numbers of particles, such as neutral atoms or molecules, has been gaining ground in recent years. In this review, we briefly introduce…

We observe the capture and field ionization of individual atoms near the side wall of a single suspended nanotube. Extremely large cross sections for ionization from an atomic beam are observed at modest voltages due to the nanotube's small…

原子物理 · 物理学 2014-11-20 Anne Goodsell , Trygve Ristroph , J. A. Golovchenko , Lene Vestergaard Hau

The self-assembly mechanism of one-end-open carbon nanotubes (CNTs) suspended in an aqueous solution was studied by molecular dynamics simulations. It was shown that two one-end-open CNTs with different diameters can coaxially self-assemble…

介观与纳米尺度物理 · 物理学 2017-07-31 Hang Xiao , Xiaoyang Shi , Xi Chen

In the last three decades, zero-dimensional, one-dimensional, and two-dimensional carbon nanomaterials (i.e., fullerenes, carbon nanotubes, and graphene, respectively) have attracted significant attention from the scientific community due…

介观与纳米尺度物理 · 物理学 2014-02-04 Deep Jariwala , Vinod K. Sangwan , Lincoln J. Lauhon , Tobin J. Marks , Mark C. Hersam

The carbon nanostructures are perspective materials for the future applications. This has two reasons: first, the hexagonal atomic structure which enables a high molecular variability by placing different kinds of the defects and second,…

介观与纳米尺度物理 · 物理学 2016-12-06 Jan Smotlacha , Richard Pincak

Rotations of microscale rigid bodies exhibit pronounced quantum phenomena that do not exist for their center-of-mass motion. By levitating nanoparticles in ultra-high vacuum, researchers are developing a promising platform for observing and…

量子物理 · 物理学 2021-08-02 Benjamin A. Stickler , Klaus Hornberger , M. S. Kim

Suspended single-walled carbon nanotube devices comprised of high quality electrical contacts and two electrostatic gates per device are obtained. Compared to nanotubes pinned on substrates, the suspended devices exhibit little hysteresis…

介观与纳米尺度物理 · 物理学 2007-05-23 Jien Cao , Qian Wang , Dunwei Wang , Hongjie Dai

We evaluate the equation of state of the quasi-one-dimensional (1D) phase of C60 molecules in small carbon nanotubes, nicknamed ``peas in a pod''. The chemical potential and 1D pressure are evaluated as functions of the temperature and…

软凝聚态物质 · 物理学 2007-05-23 M. Mercedes Calbi , Silvina M. Gatica , Milton W. Cole

Carbon nanotube networks are one of the candidate materials to function as malleable, transparent, conducting films, with the technologically promising application of being used as flexible electronic displays. Nanotubes disorderly…

介观与纳米尺度物理 · 物理学 2013-02-22 Luiz F. C. Pereira , M. S. Ferreira

Carbon nanomembranes made from aromatic precursor molecules are free standing nanometer thin materials of macroscopic lateral dimensions. Although produced in various versions for about two decades not much is known about their internal…

Low-dimensional metallic transport is at the heart of modern high-performance transistors. While the best devices are currently based on III-V heterojunction quantum-well channels, we demonstrate that much greater performance gains reside…

材料科学 · 物理学 2007-05-23 F. Green , D. Neilson

Remarkable progress towards realizing quantum computation has been achieved using natural and artificial atoms as qubits. This article presents a brief overview of the current status of different types of qubits. On the one hand, natural…

量子物理 · 物理学 2011-10-06 Iulia Buluta , Sahel Ashhab , Franco Nori

Fully atomistic molecular dynamics simulations were carried out to investigate how a liquid-like water droplet behaves when into contact with a nanopore formed by carbon nanotube arrays. We have considered different tube arrays, varying the…

介观与纳米尺度物理 · 物理学 2017-02-22 Ygor M. Jaques , Douglas S. Galvao

The nanophysics is halfway between the size scales of quantum mechanics and macroscopic physics governed by the laws of Newton and Einstein. The correct definition of nanophysics is the physics of structures and artefacts with dimensions in…

科普物理 · 物理学 2016-06-29 E. Catalano

A comprehensive first-principles theoretical study of the electronic properties and half-metallic nature of finite zigzag carbon nanotubes is presented. Unlike previous reports, we find that all nanotubes studied present a spin-polarized…

材料科学 · 物理学 2008-11-29 Oded Hod , Gustavo E. Scuseria

Under the application of electrical currents, metal nanocrystals inside carbon nanotubes can be bodily transported. We examine experimentally and theoretically how an iron nanocrystal can pass through a constriction in the carbon nanotube…

介观与纳米尺度物理 · 物理学 2013-04-30 Sinisa Coh , Will Gannett , A. Zettl , Marvin L. Cohen , Steven G. Louie

The transport properties of a suspended carbon nanotube probed by means of a STM tip are investigated. A microscopic theory of the coupling between electrons and mechanical vibrations is developed. It predicts a position-dependent coupling…

介观与纳米尺度物理 · 物理学 2011-10-18 N. Traverso Ziani , G. Piovano , F. Cavaliere , M. Sassetti

Coupling carbon nanotube devices to microwave circuits offers a significant increase in bandwidth and signal-to-noise ratio. These facilitate fast non-invasive readouts important for quantum information processing, shot noise and…

介观与纳米尺度物理 · 物理学 2015-05-19 V. Ranjan , G. Puebla-Hellmann , M. Jung , T. Hasler , A. Nunnenkamp , M. Muoth , C. Hierold , A. Wallraff , C. Schönenberger