Добірка наукової літератури з теми "Transdimensional materials"

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Статті в журналах з теми "Transdimensional materials"

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Babicheva, Viktoriia E., and Jerome V. Moloney. "Lattice Resonances in Transdimensional WS2 Nanoantenna Arrays." Applied Sciences 9, no. 10 (May 16, 2019): 2005. http://dx.doi.org/10.3390/app9102005.

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Анотація:
Mie resonances in high-refractive-index nanoparticles have been known for a long time but only recently have they became actively explored for control of light in nanostructures, ultra-thin optical components, and metasurfaces. Silicon nanoparticles have been widely studied mainly because of well-established fabrication technology, and other high-index materials remain overlooked. Transition metal dichalcogenides, such as tungsten or molybdenum disulfides and diselenides, are known as van der Waals materials because of the type of force holding material layers together. Transition metal dichalcogenides possess large permittivity values in visible and infrared spectral ranges and, being patterned, can support well-defined Mie resonances. In this Communication, we show that a periodic array of tungsten disulfide (WS2) nanoantennae can be considered to be transdimensional lattice and supports different multipole resonances, which can be controlled by the lattice period. We show that lattice resonances are excited in the proximity to Rayleigh anomaly and have different spectral changes in response to variations of one or another orthogonal period. WS2 nanoantennae, their clusters, oligomers, and periodic array have the potential to be used in future nanophotonic devices with efficient light control at the nanoscale.
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Shah, Deesha, Zhaxylyk A. Kudyshev, Soham Saha, Vladimir M. Shalaev, and Alexandra Boltasseva. "Transdimensional material platforms for tunable metasurface design." MRS Bulletin 45, no. 3 (March 2020): 188–95. http://dx.doi.org/10.1557/mrs.2020.63.

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Babicheva, Viktoriia E. "Multipole Resonances in Transdimensional Lattices of Plasmonic and Silicon Nanoparticles." MRS Advances 4, no. 11-12 (2019): 713–22. http://dx.doi.org/10.1557/adv.2019.152.

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ABSTRACTTransdimensional photonics has emerged as a new field of science and engineering that explores the optical properties of materials and nanostructures in the translational regime between two and three dimensions. In the present work, we study an example of such transdimensional lattice consisting of nanoparticle array, and we aim at a direct comparison of lattice resonances excited in the periodic lattices of either plasmonic (gold) or silicon nanoparticles of the same size and interparticle spacing. We numerically analyze extinction cross-sections and reflection from the array, and we include electric and magnetic dipoles and electric quadrupoles into consideration. Lattice resonances are excited at the wavelength close to Rayleigh anomaly which is defined by the array periodicity, and different multipoles respond to one or another period of rectangular array depending on incident light polarization. We show that lattice resonances originating from dipole moments are extended to the larger spectral range than electric-quadrupole lattice resonances. Overlap of resonances causes a decrease in reflection (generalized Kerker effect) and, in the case of electric quadrupole and magnetic dipole moments, the coupling of the multipoles is enabled by the lattice.
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Bondarev, Igor V., and Yurii E. Lozovik. "Magnetic-field-induced Wigner crystallization of charged interlayer excitons in van der Waals heterostructures." Communications Physics 5, no. 1 (December 5, 2022). http://dx.doi.org/10.1038/s42005-022-01095-8.

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Анотація:
AbstractEver since its inception, coherent excited states of semiconductors have been the focus of semiconductor materials research to evolve into a vibrant field of low-dimensional solid-state physics. The field is gaining new momentum these days due to emerging transdimensional semiconductors such as van der Waals bound layers of transition metal dichalcogenides (TMDs) of controlled thickness. Here, we develop the theory of magnetic-field-induced Wigner crystallization for charged interlayer excitons (CIE) discovered recently in TMD heterobilayers. We derive the ratio of the potential interaction energy to the kinetic energy for the many-particle CIE system in the perpendicular magnetostatic field of an arbitrary strength and predict the crystallization effect in the strong field regime. We show that magnetic-field-induced Wigner crystallization and melting of CIEs can be observed in magneto-photoluminescence experiments with TMD bilayers of systematically varied electron-hole doping concentrations. Our results advance the capabilities of this new generation of transdimensional quantum materials.
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Shah, Deesha, Morris Yang, Zhaxylyk Kudyshev, Xiaohui Xu, Vladimir M. Shalaev, Igor V. Bondarev, and Alexandra Boltasseva. "Thickness-Dependent Drude Plasma Frequency in Transdimensional Plasmonic TiN." Nano Letters, May 31, 2022. http://dx.doi.org/10.1021/acs.nanolett.1c04692.

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Тези доповідей конференцій з теми "Transdimensional materials"

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Shah, Deesha, Morris Yang, Zhaxylyk Kudyshev, Vladimir M. Shalaev, Igor Bondarev, and Alexandra Boltasseva. "Thickness Dependent Optical Properties of Plasmonic Transdimensional Titanium Nitride." In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.ff4c.2.

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Анотація:
We experimentally demonstrate quantum confinement induced thickness dependent optical properties in atomically-thin, passivated, epitaxial, metallic TiN films using spectroscopic ellipsometry as predicted by a nonlocal Drude dielectric response model for plasmonic transdimensional materials (TDMs).
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