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The physics of adhesion of one-dimensional nano structures such as nanotubes, nano wires, and biopolymers on different material substrates is of great interest for the study of biological adhesion and the development of nano electronics and…

材料科学 · 物理学 2015-05-20 Tianjun Li , Anthony AYARI , Ludovic Bellon

We provide a simple scheme for predicting the electronic structure of van-der-Waals bound systems, based on the mere knowledge of the electronic structure of the subunits. We demonstrate this with the example of nano-peapods, consisting of…

材料科学 · 物理学 2013-01-21 Matus Milko , Peter Puschnig , Claudia Draxl

Electronic many-body correlation effects in one-dimensional (1D) systems such as carbon nanotubes have been predicted to modify strongly the nature of photoexcited states. Here we directly probe this effect using broadband elastic light…

The elastic properties of nanotubes fabricated by layer-by-layer (LbL) assembly of polyelectrolytes in the nanopores of polycarbonate track-etched membranes have been investigated by resonant contact Atomic Force Microscopy (AFM), for…

材料科学 · 物理学 2009-03-31 S. Stéphane Cuenot , H. Alem , G. Louarn , S. Demoustier-Champagne , A. M. Jonas

We study the binding energy, intertube distance and electronic structure of bundles consisting of single walled carbon nanotubes of the same chirality. We model various nanotube structures (chiralities) and orientations with van der Waals…

材料科学 · 物理学 2012-07-20 Heiko Dumlich , Stephanie Reich

In their tubelike phase, nanowire-adsorbed polymers exhibit strong structural similarities to morphologies known from single-walled carbon (hexagonal) and boron (triangular) nanotubes. Since boron/boron nitride tubes require some disorder…

软凝聚态物质 · 物理学 2021-05-13 Thomas Vogel , Tali Mutat , Joan Adler , Michael Bachmann

The interactions between the layers of double-walled carbon nanotubes induce measurable shift of the G bands relative to the isolated layers. While experimental data on this shift in free-standing double-walled carbon nanotubes has been…

介观与纳米尺度物理 · 物理学 2018-04-18 Valentin N. Popov , Dmitry I. Levshov , Jean-Louis Sauvajol , Matthieu Paillet

A density functional theory study of the structural and electronic properties and relative stability of narrow SP3 silicon nanotubes of different growth orientations is presented. All nanotubes studied and their corresponding wire…

介观与纳米尺度物理 · 物理学 2012-12-05 Alon Hever , Jonathan Bernstein , Oded Hod

The structures and symmetries of single-walled carbon nanotubes (SWNTs) are introduced in detail. The physical properties of SWNTs induced by their symmetries can be described by tensors in mathematical point of view. It is found that there…

介观与纳米尺度物理 · 物理学 2009-09-29 Z. C. Tu , Z. C. Ou-Yang

In a recent paper Liang {\it et al.} [Nature {\bf 411}, 665 (2001)] showed experimentally, that metallic nanotubes, strongly coupled to external electrodes, may act as coherent molecular waveguides for electronic transport. The experimental…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Krompiewski , J. Martinek , J. Barnas

The importance of finite-size effects for the electronic structure of long zigzag and armchair carbon nanotubes is studied. We analyze the electronic structure of capped (6,6), (8,0), and (9,0) single walled carbon nanotubes as a function…

化学物理 · 物理学 2007-05-23 Oded Hod , Juan E. Peralta , Gustavo E. Scuseria

The curvature effects in carbon nanotubes are studied analytically as a function of chirality. The pi-orbitals are found to be significantly rehybridized in all tubes, so that they are never normal to the tubes' surface. This results in a…

强关联电子 · 物理学 2009-11-07 Alex Kleiner , Sebastian Eggert

Several intramolecular junctions (IMJs) connecting two metallic (11, 8) and (9, 6) carbon nanotubes along their common axis have been realized by using a layer-divided technique to the nanotubes and introducing the topological defects.…

材料科学 · 物理学 2007-05-23 Wei Fa , Jiangwei Chen , Hong Liu , Jinming Dong

We present a systematic analysis of the effect of radial deformation on the atomic and electronic structure of zigzag and armchair single wall carbon nanotubes using the first principle plane wave method. The nanotubes were deformed by…

材料科学 · 物理学 2016-08-31 O. Gulseren , T. Yildirim , S. Ciraci , C. Kilic

Radial elastic corrugation of multiwalled carbon nanotubes under hydrostatic pressure is demonstrated by using the continuum elastic theory. Various corrugation patterns are observed under a pressure of several GPa, wherein the stable…

材料科学 · 物理学 2009-03-17 Hiroyuki Shima , Motohiro Sato

We theoretically study the electronic structure and spin properties of one-dimensional nanostructures of the prototypical bulk topological insulator Bi$_2$Se$_3$. Realistic models of experimentally observed Bi$_2$Se$_3$ nanowires and…

介观与纳米尺度物理 · 物理学 2018-04-13 Naunidh Virk , Gabriel Autès , Oleg V. Yazyev

Geometry incommensurability between weakly coupled shells in multi-walled carbon nanotubes is shown to be the origin of unconventional electronic conduction mechanism, power-law scaling of the conductance, and remarkable magnetotransport…

介观与纳米尺度物理 · 物理学 2009-11-07 Stephan Roche , François Triozon , Angel Rubio , Didier Mayou

The energy band gap structure and stability of (3,3) and (10,10) nanotubes have been comparatively investigated in the frameworks of the traditional form of the Su-Schrieffer-Heeger (SSH) model and a toy model including the contributions of…

材料科学 · 物理学 2007-05-23 N. Sunel , E. Rizaoglu , K. Harigaya , O. Ozsoy

The microstructure, electronic structure, and chemical bonding of chromium carbide thin films with different carbon contents have been investigated with high-resolution transmission electron microscopy, electron energy loss spectroscopy and…

介观与纳米尺度物理 · 物理学 2012-05-04 Martin Magnuson , Matilda Andersson , Jun Lu , Lars Hultman , Ulf Jansson

The electronic structure of the nanolaminated transition metal carbide Ti2AlC has been investigated by bulk-sensitive soft x-ray emission spectroscopy. The measured Ti L, C K and Al L emission spectra are compared with calculated spectra…

材料科学 · 物理学 2011-12-30 M. Magnuson , O. Wilhelmsson , J. -P. Palmquist , U. Jansson , M. Mattesini , S. Li , R. Ahuja , O. Eriksson