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The behavior of a nanodevice based upon double-walled carbon nanotube oscillators driven by periodically applied thermal gradients (7 and 17 K/nm) is investigated by numerical calculations and classical molecular dynamics simulations. Our…

介观与纳米尺度物理 · 物理学 2010-01-06 V. R. Coluci , V. S. Timóteo , D. S. Galvão

We study the motion of C60 fullerene molecules (buckyballs) and short-length carbon nanotubes on graphene nanoribbons. We demonstrate that the nanoribbon edge creates an effective potential that keeps the carbon structures on the surface.…

介观与纳米尺度物理 · 物理学 2012-06-05 Alexander V. Savin , Yuri S. Kivshar

We use a first-principles based kinetic Monte Carlo simulation to study the movement of a solid iron nanocrystal inside a carbon nanotube driven by the electrical current. The origin of the iron nanocrystal movement is the electromigration…

介观与纳米尺度物理 · 物理学 2013-07-18 Sinisa Coh , Steven G. Louie , Marvin L. Cohen

In this paper, we investigate, by molecular dynamics simulations, the mechanical properties of a new carbon nanostructure, termed graphene nanochain, constructed by sewing up pristine or twisted graphene nanoribbons (GNRs) and interlocking…

材料科学 · 物理学 2013-11-26 Yongping Zheng , Lanqing Xu , Zheyong Fan , Ning Wei , Zhigao Huang

Vibration reduction is of great importance in various engineering applications, and a material that exhibits good vibration damping along with high strength and modulus has become more and more vital. Owing to the superior mechanical…

材料科学 · 物理学 2017-11-07 Jingna Zhao , Fulin Wang , Xin Zhang , Linjie Liang , Xueqin Yang , Qingwen Li , Xiaohua Zhang

Ever since the discovery of carbon nanotubes (CNTs), it has long been a challenging goal to create macroscopically ordered assemblies, or crystals, of CNTs that preserve the one-dimensional quantum properties of individual CNTs on a…

Recent conductance measurements on multi-wall carbon nanotubes (CNTs) reveal an effective behavior similar to disordered single-wall CNTs. This is due to the fact that electric current flows essentially through the outermost shell and is…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Krompiewski , N. Nemec , G. Cuniberti

Making liquid droplets move spontaneously on solid surfaces is a key challenge in lab-on-chip and heat exchanger technologies. The best-known mechanism, a wettability gradient, does not generally move droplets rapidly enough and cannot…

软凝聚态物质 · 物理学 2015-03-13 Cunjing Lv , Chao Chen , Yin-Chuan Chuang , Fan-Gang Tseng , Yajun Yin , Francois Grey , Quanshui Zheng

How to make small liquid droplets move spontaneously and directionally on solid surfaces is a challenge in lab-on-chip technologies, DNA analysis, and heat exchangers. The best-known mechanism, a wettability gradient, does not move droplets…

流体动力学 · 物理学 2015-03-13 Cunjing Lv , Chao Chen , Yin-Chuan Chuang , Fan-Gang Tseng , Yajun Yin , Francois Grey , Quanshui Zheng

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

The common sense regarding twisting or untwisting a ribbon is that it requires the application of an external rotation to happen. However, at nanoscale, the application of precise amounts of rotation on a nanoribbon is not a trivial task.…

介观与纳米尺度物理 · 物理学 2021-07-02 Alexandre F. Fonseca

Controlling the motion of nano and microscale objects in a fluid environment is a key factor in designing optimized tiny machines that perform mechanical tasks such as transport of drugs or genetic material in cells, fluid mixing to…

We simulate the twist of carbon nanotubes using atomic molecular dynamic simulations. The ultimate twist angle per unit length and the deformation energy are calculated for nanotubes of different geometries. It is found that the big tube is…

介观与纳米尺度物理 · 物理学 2009-09-21 Zhao Wang , Michel Devel , Bernard Dulmet

The locomotion of flexible membrane-like organisms on top of curved surfaces appears in different contexts and scales. Still, such dynamics have not yet been quantitatively modeled and no realization of such motion in manmade systems has…

软凝聚态物质 · 物理学 2024-02-27 Omri Y. Cohen , Yael Klein , Eran Sharon

We have observed the transversal vibration mode of suspended carbon nanotubes at millikelvin temperatures by measuring the single-electron tunneling current. The suspended nanotubes are actuated contact-free by the radio frequency electric…

介观与纳米尺度物理 · 物理学 2009-07-18 A. K. Huettel , G. A. Steele , B. Witkamp , M. Poot , L. P. Kouwenhoven , H. S. J. van der Zant

Spin-dependent coherent quantum transport through carbon nanotubes (CNT) is studied theoretically within a tight-binding model and the Green's function partitioning technique. End-contacted metal/nanotube/metal systems are modelled and next…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Krompiewski

Successful assembly of suspended nanoscale rod-like particles depends on fundamental phenomena controlling rotational and translational diffusion. Despite the significant developments in fluidic fabrication of nanostructured materials, the…

软凝聚态物质 · 物理学 2018-01-25 Christophe Brouzet , Nitesh Mittal , L. Daniel Söderberg , Fredrik Lundell

Nano-patterned substrates offer possibilities for controlling the motion of fluids without external energy supply in novel technologies in microfluidics, coatings, etc. Here, we report on the rugotaxial motion of droplets on wrinkled…

流体动力学 · 物理学 2023-06-26 Panagiotis E. Theodorakis , Sergei A. Egorov , Andrey Milchev

Self-locking structures are often studied in macroscopic energy absorbers, but the concept of self-locking can also be effectively applied at the nanoscale. In particular, we can engineer self-locking mechanisms at the molecular level…

介观与纳米尺度物理 · 物理学 2024-09-02 Andrea Pedrielli , Simone Taioli , Nicola Maria Pugno

We propose a microscopic model for a nanoelectromechanical system made by a radio-frequency driven suspended carbon nanotube (CNT) in the presence of an external magnetic field perpendicular to the current. As a main result, we show that,…

介观与纳米尺度物理 · 物理学 2015-06-12 A. Nocera , C. A. Perroni , V. Marigliano Ramaglia , G. Cantele , V. Cataudella