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Quantum confinement significantly influences the excited states of sub-10 nm single-walled carbon nanotubes (SWCNTs), crucial for advancements in transistor technology and the development of novel opto-electronic materials such as…

介观与纳米尺度物理 · 物理学 2024-10-30 Benjamin Eller , Charles W. Clark , YuHuang Wang

Recently (PRL 96, 106804 (2006)) it was suggested that cobaltocene(CC) molecules encapsulated into (7,7) carbon nanotubes (CNT@(7,7)) could be the basis for new spintronic devices. We show here based on impact molecular dynamics and DFT…

The growth of single wall carbon nanotubes (SWCNT) inside host SWCNTs remains a compelling alternative to the conventional catalyst induced growth processes. It not only provides a catalyst free process but the ability to control the…

介观与纳米尺度物理 · 物理学 2021-01-28 J. Koltai , H. Kuzmany , T. Pichler , F. Simon

An elegant formula for coordinates of carbon atoms in a unit cell of a single-walled nanotube (SWNT) is presented and a new molecular motor of double-walled carbon nanotube whose inner tube is a long (8,4) SWNT and outer tube a short (14,8)…

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

We theoretically study the interplay between electrical and mechanical properties of suspended, doubly clamped carbon nanotubes in which charging effects dominate. In this geometry, the capacitance between the nanotube and the gate(s)…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Sapmaz , Ya. M. Blanter , L. Gurevich , H. S. J. van der Zant

In this work we are interested to studying the Kondo effect present in a system with a $T$-shape ligation between a single-wall carbon nanotube (SWNT) and a magnetic impurity. The system has been studied under hydrostatic pressure and it…

强关联电子 · 物理学 2019-12-16 T. Lobo , Minos A. Neto , Marcio G. da Silva , Octavio D. R. Salmon

Careful research on different materials reveals that the material properties are mostly affected by the size of it. Material size down to nanometer scale exhibits some remarkable properties, resulting in unique physical and chemical…

应用物理 · 物理学 2019-09-04 Joydip Sengupta

Single-walled carbon nanotube (SWCNT) films are promising materials for transparent conductive films (TCFs) with potential applications in flexible displays, touch screens, solar cells and solid-state lighting1,2. However, further…

材料科学 · 物理学 2019-09-27 Qiang Zhang , Weiya Zhou , Kewei Li , Nan Zhang , Yanchun Wang , Zhuojian Xiao , Qingxia Fan , Sishen Xie

Recently, ultra-small-diameter Single Wall Nano Tubes with diameter of $ \sim 0.4 nm$ have been produced and many unusual properties were observed, such as superconductivity, leading to a transition temperature $T_c\sim 15^oK$, much larger…

超导电性 · 物理学 2009-11-11 S. Bellucci , M. Cini , P. Onorato , E. Perfetto

We investigate the hydrogen adsorption capacity of Na-coated carbon nanotubes (Na-SWCNTs) using first-principles electronic structure calculations at absolute temperature and pressure. A single Na atom is always found to occupy the hollow…

材料科学 · 物理学 2012-11-01 Balasaheb. J. Nagare , Darshan Habale , Sajeev Chacko , Swapan Ghosh

We report measurements on ropes of Single Walled Carbon Nanotubes (SWNT) in low-resistance contact to non-superconducting (normal) metallic pads, at low voltage and at temperatures down to 70 mK. In one sample, we find a two order of…

介观与纳米尺度物理 · 物理学 2019-08-17 M. Kociak , A. Yu. Kasumov , S. Gueron , B. Reulet , L. Vaccarini , I. I. Khodos , Yu. B. Gorbatov , V. T. Volkov , H. Bouchiat

In this study, the synthesis of multi-walled carbon nanotubes (MWCNTs) was carried out by chemical vapor deposition (CVD) using propane as the carbon source and Si as the catalyst support. The effect of CVD process variables such as…

应用物理 · 物理学 2018-08-21 Joydip Sengupta

Chemical vapor deposition synthesis of single-walled carbon nanotubes experiments, using Fe catalyst, and alternating methane and carbon monoxide as carbon feedstocks, lead to the reversible formation of junctions between tubes of different…

We investigate the transition between the Cassie-Baxter and Wenzel states of a slowly evaporating, micron-scale drop on a superhydrophobic surface. In two dimensions analytical results show that there are two collapse mechanisms. For long…

软凝聚态物质 · 物理学 2008-03-12 H. Kusumaatmaja , M. L. Blow , A. Dupuis , J. M. Yeomans

Two-dimensional (2D) van der Waals (vdW) moir\'e superlattices have provided a powerful knob to engineer a plethora of new quantum states. However, extending such moir\'e engineering to one-dimensional (1D) vdW systems has remained…

The temperature dependence of the band gap of semiconducting single-wall carbon nanotubes (SWNTs) is calculated by direct evaluation of electron-phonon couplings within a ``frozen-phonon'' scheme. An interesting diameter and chirality…

材料科学 · 物理学 2009-11-10 Rodrigo B. Capaz , Catalin D. Spataru , Paul Tangney , Marvin L. Cohen , Steven G. Louie

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…

Based on density functional theory calculations, we here show that the formation of a fullerene C$_{60}$ carbon "nanobud" (CNB) on carbon nanotube (CNT) caps is energetically more favorable than that on CNT sidewalls. The dominant CNB…

介观与纳米尺度物理 · 物理学 2016-02-17 Ji Il Choi , Hyo Seok Kim , Han Seul Kim , Ga In Lee , Jeung Ku Kang , Yong-Hoon Kim

The combination of pressure and vacancy defects are investigated to find the ideal conditions that would create meaningful $sp^3$ interlinking without causing severe damage to the single-walled carbon nanotubes (SWCNTs). Naturally occurring…

材料科学 · 物理学 2022-01-10 Xolani Maphisa , Robert Warmbier

Monolithic 3YTZP and 3YTZP containing 2.5 vol.% of single-walled carbon nanotubes (SWCNT) were fabricated by Spark Plasma Sintering (SPS) at 1250 C. Microstructural characterization of the as-fabricated 3YTZP/SWCNTs composite shows a…