中文
相关论文

相关论文: Rational Doping Strategy of Porous Materials for H…

200 篇论文

Carbon nanotubes (CNTs) are promising candidates to improve the thermal conductivity of nano-composites. The main obstacle to these applications is the extremely high thermal boundary (Kapitza) resistance between the CNTs and their matrix.…

介观与纳米尺度物理 · 物理学 2024-04-11 K. G. S. H. Gunawardana , Kieran Mullen

In this paper, we have analysed the electronic and mechanical properties of Nitrogen(N) doped (6,1) SWCNTs based on first-principles and Molecular dynamic (MD) simulation. A schematic N-doping on SWCNT was performed along zigzag(zz) and…

材料科学 · 物理学 2021-08-06 Y. T. Singh , P. K. Patra , D. P. Rai

Mono- and few-layer transition-metal dichalcogenides (TMDCs) provide opportunities for ideal two-dimensional semiconductors for electronic and optoelectronic devices. For electronic devices on TMDCs, it is essential to incorporate n- and/or…

材料科学 · 物理学 2019-08-14 Sehoon Oh , June Yeong Lim , Seongil Im , Hyoung Joon Choi

Finding a suitable material for hydrogen storage at ambient atmospheric conditions is challenging for material scientists and chemists. In this work, using a first principles based cluster expansion approach, the hydrogen storage capacity…

Tuning of the electronic properties of pre-synthesized colloidal semiconductor nanocrystals (NCs) by doping plays a key role in the prospect of implementing them in printed electronics devices such as transistors, and photodetectors. While…

材料科学 · 物理学 2021-05-25 Yorai Amit , Yuanyuan Li , Anatoly I. Frenkel , Uri Banin

Dispersion corrected density functional theory ($\omega$B97X-D DFT) method is used to study the molecular hydrogen adsorption in $Ni_nMg_m$ $(1\geq n\geq 3,1\geq m\geq9)$ clusters. All these clusters can effectively adsorb multiple $H_2$ in…

材料科学 · 物理学 2022-02-28 Bishwajit Boruah , Bulumoni Kalita

Intuitively, doping represents one of the most promising avenues for optimization of best prospect superconductors (SC) such as conventional high-pressure SCs with record critical temperatures. However, doping at high pressure (HP) is very…

An ideal material for on-board hydrogen storage must release hydrogen at practical temperature and pressure and also regenerate efficiently under similarly gentle conditions. Therefore, thermodynamically, the hydride material must lie…

材料科学 · 物理学 2015-05-18 T. A. Abtew , Bi-ching Shih , Pratibha Dev , Vincent H. Crespi , Peihong Zhang

In most envisioned applications, full utilization of a graphene-carbon nanotube (CNT) construct requires maintaining the integrity of the graphene layer during the CNT growth step. In this work, we exhibit an approach towards controlled CNT…

材料科学 · 物理学 2013-08-13 Kitu Kumar , Youn-Su Kim , Xin Li , Junjun Ding , Frank T. Fisher , Eui-Hyeok Yang

The phosphorus-doped single wall carbon nanotube (PSWCNT) is studied by using First-Principle methods based on Density Function Theory (DFT). The formation energy, total energy, band structure, geometry structure and density of states are…

介观与纳米尺度物理 · 物理学 2011-08-10 AQing Chen , QingYi Shao , ZhiCheng Lin

We report the fabrication details and low-temperature characteristics of the first carbon nanotube (CNT) quantum dots on flakes of hexagonal boron nitride (hBN) as substrate. We demonstrate that CNTs can be grown on hBN by standard chemical…

介观与纳米尺度物理 · 物理学 2014-07-21 A. Baumgartner , G. Abulizi , K. Watanabe , T. Taniguchi , J. Gramich , C. Schoenenberger

Hydrogen is widely regarded as a cornerstone of future low-carbon energy technologies, yet the lack of safe, efficient, and reversible solid-state storage materials remains a major barrier to its large-scale deployment. Although porous…

Carbon nanotube (CNT) fibres are firmly established as a new high-performance fibre, but their tensile mechanical properties remain a relatively small fraction of those of the constituent CNTs. Clear structure-property relations and…

应用物理 · 物理学 2020-08-05 J. C. Fernández-Toribio , A. Mikhalchan , C. Santos , A. Ridruejo , J. J. Vilatela

Here, we report the synthesis of hard carbon materials(CSH) made from corn starch and their application as an anode in lithium-ion batteries. The study shows that the Microstructure and electrochemical properties of CSHs are affected by…

材料科学 · 物理学 2024-07-31 Aoqi Huang , Yibo Tu , Qichao Yu

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

The mechanism of the selective dispersion of single-walled carbon nanotubes (CNTs) by polyfluorene polymers is studied in this paper. Using extensive molecular dynamics simulations, it is demonstrated that diameter selectivity is the result…

Polarized optical microscopy and spectroscopy are progressively becoming key methods for the high-throughput characterization of individual carbon nanotubes (CNTs) and other one-dimensional nanostructures, on substrate and in devices. The…

An oxygen assisted hydrocarbon chemical vapor deposition (CVD) method is developed to afford large-scale highly reproducible ultra high-yield growth of vertical single-walled carbon nanotubes (SWNT). It is revealed that reactive hydrogen…

The storage of hydrogen (H$_2$) is of economic and ecological relevance, because it could potentially replace petroleum-based fuels. However, H$_2$ storage at mild condition remains one of the bottlenecks for its widespread usage. In order…

材料科学 · 物理学 2019-12-24 Srimanta Pakhira , Jose L. Mendoza-Cortes

Grand Canonical Monte Carlo (GCMC) simulations are performed to study hydrogen physisorption in different nano carbon porous materials made up of different substructures including carbon nanotubes (CNT), graphene sheets and C60. Hydrogen…

材料科学 · 物理学 2011-11-22 Tengfei Luo , John R. Lloyd