Влияние внешнего магнитного поля на затухание Ландау в углеродных нанотрубках
Russian Journal of Physical Chemistry B. 2009. Т. 28. № 4. С. 81-84.
Sezonov Y. I., Перепелкина Ю. В.
Research target: Physics
Priority areas: engineering science
, , et al., Nature Photonics 2016 Vol. 10 P. 727-733
Photonic quantum technologies allow quantum phenomena to be exploited in applications such as quantum cryptography, quantum simulation and quantum computation. A key requirement for practical devices is the scalable integration of single-photon sources, detectors and linear optical elements on a common platform. Nanophotonic circuits enable the realization of complex linear optical systems, while non-classical light ...
Added: October 20, 2016
, , et al., Applied Physics Letters 2013 Vol. 103 P. 181121-1-181121-5
We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The devices contain carbon nanotubes (CNTs), which are over their length partially suspended and partially Van der Waals bonded to a SiO2 substrate, causing a difference in thermal contact. We observe a DC voltage upon exposure to 140GHz radiation. Based on ...
Added: March 13, 2014
, , et al., Fullerenes Nanotubes and Carbon Nanostructures 2020 Vol. 28 No. 1 P. 50-53
We report an experimental study of the band structure of individual carbon nanotubes (SCNTs) based on investigation of the tunneling density of states, i.e. tunneling spectroscopy. A common approach to this task is to use a scanning tunneling microscope (STM). However, this approach has a number of drawbacks, to overcome which, we propose another method–tunneling ...
Added: October 29, 2020
, , et al., Physica Status Solidi (B): Basic Research 2018 Vol. 255 No. 1 P. 1-6
Despite the intensive development of the terahertz technologies in the last decade, there is still a shortage of efficient room-temperature radiation detectors. Carbon nanotubes (CNTs) are considered as a very promising material possessing many of the features peculiar for graphene (suppression of backscattering, high mobility, etc.) combined with a bandgap in the carrier spectrum. In ...
Added: January 18, 2018
, , et al., Beilstein Journal of Nanotechnology 2017 Vol. 8 No. 1 P. 38-44
Carbon nanotubes (CNTs) have recently been integrated into optical waveguides and operated as electrically-driven light emitters under constant electrical bias. Such devices are of interest for the conversion of fast electrical signals into optical ones within a nanophotonic circuit. Here, we demonstrate that waveguide-integrated single-walled CNTs are promising high-speed transducers for light-pulse generation in the ...
Added: February 22, 2017
, , Химическая физика 2009 Т. 28 № 12 С. 81-83
Изучен вклад электрон-фононного взаимодействия в проводимость углеродной нанотрубки. Получены аналитические формулы, описывающие зависимость проводимости нанотрубки от температуры, скорости звука, радиуса нанотрубки и линейной концентрации электронов. ...
Added: February 28, 2013
, , , Inorganic Materials: Applied Research 2014 Vol. 4 No. 2 P. 107-115
Features of formation and migration of radiation-induced defects in carbon nanotubes (CNT) and nanostructured materials are examined. The main methods and software tools used for the simulating nanomaterial structure and space factors are described. The results of mathematical simulation are presented. ...
Added: March 2, 2015
, , et al., Optics Express 2021 Vol. 29 No. 23 P. 37189-37199
We report on helicity sensitive photovoltaic terahertz radiation response of a carbon nanotube made in a configuration of a field-effect transistor. We find that the magnitude of the rectified voltage is different for clockwise and anticlockwise circularly polarized radiation. We demonstrate that this effect is a fingerprint of the plasma waves interference in the transistor ...
Added: May 20, 2022
, , et al., Химическая физика 2005 Т. 24 № 6 С. 78-84
Показано, что при комнатной температуре дисперсионный транспорт дырок в поликарбонате, до-пированном 30 мас. % ароматического гидразона ДЭШ, в интервале времен наблюдения до 1с не зависит от присутствия в его объеме заряженных центров в концентрации 6 1017-6 1019 м-3. Влияние дозы излучения за импульс на времяпролетную кривую обусловлено протеканием бимолекулярной рекомбинации. Оба этих результата полностью согласуются ...
Added: January 16, 2014
, , et al., ACS Applied Materials & Interfaces 2020 Vol. 12 No. 49 P. 55141-55147
We propose a novel strategy to enhance optoelectrical properties of single-walled carbon nanotube (SWCNT) films for transparent electrode applications by film patterning. First, we theoretically considered the effect of the conducting pattern geometry on the film quality factor and then experimentally examined the calculated structures. We extend these results to show that the best characteristics ...
Added: November 30, 2020
Electronic Properties of Carbon Nanotubes Intercalated with Li+ and Mg2+: Effects of Ion Charge and Ion Solvation
, , et al., Journal of Physical Chemistry C 2016 Vol. 120 No. 46 P. 26514-26521
The influence of bare and solvated cations imbedded inside single-walled carbon nanotubes (SWCNTs) on the SWCNT electronic properties is studied by ab initio electronic structure calculations. The roles of ion charge and ion solvation are investigated by comparing Li+ vs Mg2+ and Li+ vs its solvatocomplex with two ethylene carbonate (EC) molecules, [Li(EC)2]+. Two achiral ...
Added: November 22, 2016
, , , Физика твердого тела 2008 Т. 50 № 12 С. 2220-2224
Получена квантовая формула для продольной диэлектрической проницаемости намагниченного электронного газа квантового цилиндра. Вычислены асимптотики закона дисперсии продольных плазменных волн в вырожденном электронном газе. Рассмотрено приближение как слабой, так и сильной пространственной дисперсии. Показано, что продольная диэлектрическая проницаемость является осциллирующей функцией магнитного потока через сечение нанотрубки. ...
Added: November 29, 2012
Force and magnetic field sensor based on measurement of tunneling conductance between ends of coaxial carbon nanotubes
, , et al., Computational Materials Science 2014 Vol. 92 P. 84-91
The interaction and tunneling conductance between oppositely located ends of coaxial carbon nanotubes are studied by the example of two (11, 11) nanotubes with open ends terminated by hydrogen atoms. The Green function formalism is applied to determine the tunneling current through the nanotube ends as a function of the distance between the ends, relative orientation ...
Added: October 17, 2016
Single-particle states spectroscopy in individual carbon nanotubes with an aid of tunneling contacts
, , et al., Applied Physics Letters 2022 Vol. 120 No. 8 Article 083104
Recent studies have demonstrated that the band structure of a carbon nanotube (CNT) depends not only on its geometry but also on various factors such as atmosphere chemical composition and dielectric environment. Systematic studies of these effects require an efficient tool for an in situ investigation of a CNT band structure. In this work, we fabricate tunneling ...
Added: February 28, 2022
, , et al., Nanoscale 2022 Vol. 14 No. 5 P. 1978-1989
Molecular magnetism and specifically magnetic molecules have recently gained plenty of attention as key elements for quantum technologies, information processing, and spintronics. Transition to the nanoscale and implementation of ordered structures with defined parameters is crucial for advanced applications. Single-walled carbon nanotubes (SWCNTs) provide natural one-dimensional confinement that can be implemented for encapsulation, nanosynthesis, and ...
Added: June 19, 2022
, , et al., Journal of Physics: Conference Series 2019 Vol. 1410 No. 1 Article 012208
In this paper, we study terahertz detectors based on single quasimetallic carbon nanotubes (CNT) with asymmetric contacts and different metal pairs. We demonstrate that, depending on the contact metallization of the device, various detection mechanisms are manifested. ...
Added: August 1, 2022
, , et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2016 Vol. 10 No. 3 P. 617-622
We present the results of the simulation tests of samples of polymer nanocomposites based on carbon nanotubes for resistance to oxygen plasma in the Earth’s upper atmosphere. Data on the weight loss of the samples, the results of analysis of their surface structure after irradiation, and data on arrays of carbon nanotubes damaged under the ...
Added: September 17, 2016
Two-dimensional plasmons in lateral carbon nanotube network structures and their effect on the terahertz radiation detection
, , et al., Journal of Applied Physics 2016 Vol. 120 P. 044501-1 -044501-13
We consider the carrier transport and plasmonic phenomena in the lateral carbon nanotube (CNT) networks forming the device channel with asymmetric electrodes. One electrode is the Ohmic contact to the CNT network and the other contact is the Schottky contact. These structures can serve as detectors of the terahertz (THz) radiation. We develop the device ...
Added: October 19, 2016
, , et al., Journal of Physics: Conference Series 2016 Vol. 741 No. 1 P. 012143
Demand for efficient terahertz (THz) radiation detectors resulted in intensive study of the asymmetric carbon nanostructures as a possible solution for that problem. In this work, we systematically investigate the response of asymmetric carbon nanodevices to sub-terahertz radiation using different sensing elements: from dense carbon nanotube (CNT) network to individual CNT. We conclude that the ...
Added: October 20, 2016
Ab initio study of unzipping processes in carbon and boron nitride nanotubes under atomic oxygen impact
, , RSC advances 2013 Vol. 3 No. 35 P. 15362-15367
We apply first principles calculations to compare the carbon and boron nitride nanotube unzipping under atomic oxygen impact. We show that the attack of several oxygen atoms can cause bond breaking in nanotubes, but the structure of boron nitride nanotubes is less damaged than the structure of carbon ones. With increasing diameter, the structural damage ...
Added: March 2, 2015
, , et al., IOP Conference Series: Materials Science and Engineering (MSE) 2020 Vol. 781 No. 1 P. 012011-1-012011-5
Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 µm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures ...
Added: December 10, 2020
, , Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159
Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...
Added: November 30, 2018
, , , Laser Physics Letters 2020 Vol. 17 No. 4 P. 045901
In this paper we present measurements and comparison of SPP propagation length at the practically important telecom wavelength (1560 nm) as well as in the near-infrared and visible spectral ranges. The measurements were carried out for plane SPP waves excited on Ag film surface using optical microscopy of SPP waves in the far field. We ...
Added: January 15, 2021
, , et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019