Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Mikhail E. Portnoi"'
Autor:
Thomas P. Collier, Mikhail E. Portnoi
Publikováno v:
Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-14 (2019)
Abstract We theoretically investigate the problem of an electron confined to a nanohelix between two parallel gates modelled as charged wires. The double-gated nanohelix system is a binary superlattice with properties highly sensitive to the gate vol
Externí odkaz:
https://doaj.org/article/176756ca145243ada125713af17b8436
Autor:
Gregory Slepyan, Amir Boag, Vladimir Mordachev, Eugene Sinkevich, Sergey Maksimenko, Polina Kuzhir, Giovanni Miano, Mikhail E Portnoi, Antonio Maffucci
Publikováno v:
New Journal of Physics, Vol 19, Iss 2, p 023014 (2017)
Understanding unwanted mutual interactions between devices at the nanoscale is crucial for the study of the electromagnetic compatibility in nanoelectronic and nanophotonic systems. Anomalous electromagnetic coupling (crosstalk) between nanodevices m
Externí odkaz:
https://doaj.org/article/fc9b6fa5fbc84f8abe015d535f635b0f
Publikováno v:
Physical Review Research
We predict an optical effect associated with systems which exhibit topologically protected states separated by a finite distance. We develop a tight-binding model to calculate the optical selection rules in linear chains of atoms of different lengths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82278f135808dc94decf413a7cb8d4e9
Autor:
Sergey A. Maksimenko, V. A. Saroka, Gregory Ya. Slepyan, Antonio Maffucci, Mikhail E. Portnoi
Publikováno v:
2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)
A novel terahertz detector is here proposed, based on the use of planar arrays of graphene nanoribbons of different widths and lengths. Two distinct mechanisms are exploited to detect an external incident field: the excitation of interband transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6cfe4f9f3b80a0458413b95d82a19a9
http://hdl.handle.net/11580/85897
http://hdl.handle.net/11580/85897
Autor:
R. R. Hartmann, Mikhail E. Portnoi
Publikováno v:
Physical Review A
The double-well problem for the two-dimensional Dirac equation is solved for a family of quasi-one-dimensional potentials in terms of confluent Heun functions. We demonstrate that for a double well separated by a barrier, both the energy level splitt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b11abefb9a899b70d0925a015cddf7a
http://arxiv.org/abs/2008.10798
http://arxiv.org/abs/2008.10798
Autor:
R. R. Hartmann, Mikhail E. Portnoi
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-1 (2020)
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::834b0f32bde921e35f3a598553b538ff
https://doi.org/10.1038/s41598-020-60649-4
https://doi.org/10.1038/s41598-020-60649-4
Autor:
Mikhail E. Portnoi, Thomas Collier
Publikováno v:
Nanoscale Research Letters
Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-14 (2019)
Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-14 (2019)
We theoretically investigate the problem of an electron confined to a nanohelix between two parallel gates modelled as charged wires. The double-gated nanohelix system is a binary superlattice with properties highly sensitive to the gate voltages. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e6eed30a1a4c98802ebcef14dfe628b
https://doi.org/10.1186/s11671-019-3069-9
https://doi.org/10.1186/s11671-019-3069-9
Publikováno v:
Journal of Applied Physics
We use the robust nearest-neighbour tight-binding approximation to study on the same footing interband dipole transitions in narrow-bandgap carbon nanotubes and graphene nanoribbons. It is demonstrated that curvature effects in metallic single-walled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8660dbcae5f669211fa1652fb4319f8
http://arxiv.org/abs/1903.10544
http://arxiv.org/abs/1903.10544
Publikováno v:
ACS Photonics
We show that strong light-matter coupling can be used to overcome a long standing problem that has prevented efficient optical emission from carbon nanotubes. The luminescence from the nominally bright exciton states of carbon nanotubes is quenched d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0ade3ea9483fa2946e05d3690bfdd36
Autor:
Mikhail E. Portnoi, Alexey Kavokin, Olivia Pulci, Pavlos G. Lagoudakis, Davide Grassano, A. Osipov, Alexey Kucherik, Lorenzo Gontrani, S. S. Demirchyan, Stepan Baryshev, Anton Zasedatelev, Vlad Samyshkin, R. R. Hartmann, Stella Kutrovskaya
Publikováno v:
Nano Letters
We studied monoatomic linear carbon chains stabilised by gold nanoparticles attached to their ends and deposited on a solid substrate. We observe spectral features of straight chains containing from 8 to 24 atoms. Low temperature PL spectra reveal ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5847da22282cbe91d88436a201db995f