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The robustness of topological materials against disorder and defects is presumed but has not been demonstrated explicitly in realistic systems. In this work, we use state-of-the-art density functional theory and recursive nonequilibrium…

Mesoscale and Nanoscale Physics · Physics 2021-01-27 Armando Pezo , Bruno Focassio , Gabriel R. Schleder , Marcio Costa , Caio Lewenkopf , Adalberto Fazzio

In this work we use first principles density-functional theory and Bethe-Salpeter equation together with tight-binding based maximally localized wannier functions (MLWF-TB) to investigate the electronic, optical and topological properties…

Using first-principles calculations, we investigate the electronic structures and binding properties of nicotine and caffeine adsorbed on single-walled carbon nanotubes to determine whether CNTs are appropriate for filtering or sensing…

Mesoscale and Nanoscale Physics · Physics 2013-07-10 Hyung-June Lee , Gunn Kim , Young-Kyun Kwon

Comparative molecular dynamics simulations of a hexamer cluster of the protic ionic liquid ethylammonium nitrate are performed using density functional theory (DFT) and density functional-based tight binding (DFTB) methods. The focus is on…

Chemical Physics · Physics 2017-03-24 Tobias Zentel , Oliver Kühn

While particle beam steering (and in particular, "scraping") in accelerators by bent channeling crystals is an established technique extensively tested at IHEP Protvino and other major high-energy labs, an interesting question is how one…

Accelerator Physics · Physics 2008-11-26 V. M. Biryukov , S. Bellucci

We demonstrate that encapsulation of atomically thin black phosphorus (BP) by hexagonal boron nitride (h-BN) sheets is very effective for minimizing the interface impurities induced during fabrication of BP channel material for quantum…

Mesoscale and Nanoscale Physics · Physics 2016-07-12 Gen Long , Shuigang Xu , Junying Shen , Jianqiang Hou , Zefei Wu , Tianyi Han , Jiangxiazi Lin , Wing Ki Wong , Yuan Cai , Rolf Lortz , Ning Wang

We calculate the effects of doping nanostructuration and the patterning of thin films of high-temperature superconductors (HTS) with the aim of optimizing their functionality as sensing materials for resistive transition-edge bolometer…

Superconductivity · Physics 2024-12-25 J. C. Verde , A. S. Viz , M. M. Botana , C. Montero-Orille , M. V. Ramallo

Many applications for topological insulators (TIs) as well as new phenomena require devices with reduced dimensions. While much progress has been made to realize thin films of TIs with low bulk carrier density, nanostructures have not yet…

Most of the works devoted so far to the electronic band structure of multiwall nanotubes have been restricted to the case where the individual layers have the same helicity. By comparison, much less is known on the electronic properties of…

Condensed Matter · Physics 2009-10-31 Ph. Lambin , V. Meunier , A. Rubio

Nanocomposite matrices of silver/poly(3-hexylthiophene) (P3HT) were prepared in ultrahigh vacuum through vapor-phase co-deposition. Change in microstructure, chemical nature and electronic properties with increasing filler (Ag) content were…

Materials Science · Physics 2011-06-28 L. Scudiero , Haoyan Wei , Hergen Eilers

Annotation A carbon nanotubes (CNT) filled polymer nanocomposites with their unique physical, mechanical and electro-optical properties has repeatedly discussed in the literature. The main part of this problem is to obtain high quality…

Mesoscale and Nanoscale Physics · Physics 2011-12-12 T. V. Vlasova , V. I. Kryshtob , V. F. Mironov , L. A. Apresyan , S. N. Bokova , E. D. Obraztsova , D. V. Vlasov

The electronic and magnetic properties of carbon nanobuds have been investigated using density functional theory. The carbon nanobuds are formed by attaching smaller fullerenes (C20, C28, C36 and C40) of variable size with (5,5) ACNT and…

Mesoscale and Nanoscale Physics · Physics 2020-06-14 Amrish Sharma , Sandeep Kaur , Hitesh Sharma , Isha Mudahar

This study presents a simulation approach for three-dimensional nanotube networks using cubic and tetragonal unit cells to enhance modeling efficiency. A random-walk algorithm was developed to generate these networks, which were analyzed in…

Computational Physics · Physics 2025-01-29 Fabian Gumpert , Dominik Eitel , Olaf Kottas , Uta Helbig , Jan Lohbreier

The development of lightweight flex PCBs and nanowire-based thermal interfaces for low-mass, high-performance detector modules are presented. A novel manufacturing approach targeting flex circuits with double-sided pad access, assembled…

Instrumentation and Detectors · Physics 2026-01-27 Abhishek Sharma , Atul Gorane , Petra Riedler , Julian Weick

Combining high-throughput experiments with machine learning allows quick optimization of parameter spaces towards achieving target properties. In this study, we demonstrate that machine learning, combined with multi-labeled datasets, can…

Nanotube-based systems are good candidates for optical limiting against broadband laser pulses. We explore new routes to improve their limiting performances. We show that the diameter of the nanotubes is a key factor to control the…

Other Condensed Matter · Physics 2007-05-23 Nicolas Izard , Didier Riehl , Eric Anglaret

Hafnium hydride is a promising material for next-generation nuclear reactors, particularly as control rods for fast fission and shielding in fusion systems. The material's intrinsic brittleness encourages its use in the form of…

Materials Science · Physics 2026-03-17 Di Wang , Catriona M McGilvery , James O Douglas , Siyang Wang

We describe both pi-conjugated polymers and semiconducting single-walled carbon nanotubes because of the remarkable similarities in their behavior under photoexcitation. The common themes between these two seemingly different classes of…

Materials Science · Physics 2009-02-17 Sumit Mazumdar , Zhendong Wang , Hongbo Zhao

Carbon nanotubes play a fundamental role in the rapidly developing field of nanoscience and nanotechnology because of their unique properties and high potential applictions. In this article, the different synthesis method of CNTs are…

Materials Science · Physics 2007-05-23 Kalpana Awasthi , Anchal Srivastava , O. N. Srivastava

We report the production of covalently bonded selenium double-helices within the narrow cavity inside double-wall carbon nanotubes. The double-helix structure, characterized by high-resolution transmission electron microscopy and X-ray…

Mesoscale and Nanoscale Physics · Physics 2013-05-21 Toshihiko Fujimori , Renato Batista dos Santos , Takuya Hayashi , Morinobu Endo , Katsumi Kaneko , David Tománek
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