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Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio. / Utkin, D. E.; Anikin, K. V.; Veber, S. L. et al.

In: Optical Materials, Vol. 109, 110466, 11.2020.

Research output: Contribution to journal › Article › peer-review

Harvard

Utkin, DE, Anikin, KV, Veber, SL & Shklyaev, AA 2020, 'Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio', Optical Materials, vol. 109, 110466. https://doi.org/10.1016/j.optmat.2020.110466

APA

Utkin, D. E., Anikin, K. V., Veber, S. L., & Shklyaev, A. A. (2020). Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio. Optical Materials, 109, [110466]. https://doi.org/10.1016/j.optmat.2020.110466

Vancouver

Utkin DE, Anikin KV, Veber SL, Shklyaev AA. Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio. Optical Materials. 2020 Nov;109:110466. doi: 10.1016/j.optmat.2020.110466

Author

Utkin, D. E. ; Anikin, K. V. ; Veber, S. L. et al. / Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio. In: Optical Materials. 2020 ; Vol. 109.

BibTeX

@article{1d4bdc1e8ba44321961d1060439a8a88,
title = "Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio",
abstract = "The light reflection spectra of Ge disk nanoresonators on a Si substrate are studied, depending on their diameter (d) and height (h). The Ge disks, fabricated at temperatures close to room temperature using the bottom-up approach, exhibit a polycrystalline structure. The reflection at resonance wavelengths decreases more than 10 times, compared to surface areas without disks when the disk aspect ratio h/d increases to 1.0 and d > 100 nm. The strong dependence of the reflection minimum on h/d can be associated with the influence of the substrate. An effective refractive index, defined as neff = λm/d and determining the long-wavelength resonance mode position λm, turns out to be larger for disks than for spheres. It is also significantly larger than the Ge refractive index. This allows the use of disks of smaller diameter than spheres to achieve the resonance effects at the same wavelength.",
keywords = "Antireflection, Dielectric metasurfaces, Germanium nanoparticles, Nanophotonics, CRYSTALLIZATION, OPTICAL-PROPERTIES, ISLANDS, LAYERS, NANOPARTICLES, FABRICATION, THIN-FILM, RESONANCES, GE, SIO2",
author = "Utkin, {D. E.} and Anikin, {K. V.} and Veber, {S. L.} and Shklyaev, {A. A.}",
note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = nov,
doi = "10.1016/j.optmat.2020.110466",
language = "English",
volume = "109",
journal = "Optical Materials",
issn = "0925-3467",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Dependence of light reflection of germanium Mie nanoresonators on their aspect ratio

AU - Utkin, D. E.

AU - Anikin, K. V.

AU - Veber, S. L.

AU - Shklyaev, A. A.

N1 - Publisher Copyright: © 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/11

Y1 - 2020/11

N2 - The light reflection spectra of Ge disk nanoresonators on a Si substrate are studied, depending on their diameter (d) and height (h). The Ge disks, fabricated at temperatures close to room temperature using the bottom-up approach, exhibit a polycrystalline structure. The reflection at resonance wavelengths decreases more than 10 times, compared to surface areas without disks when the disk aspect ratio h/d increases to 1.0 and d > 100 nm. The strong dependence of the reflection minimum on h/d can be associated with the influence of the substrate. An effective refractive index, defined as neff = λm/d and determining the long-wavelength resonance mode position λm, turns out to be larger for disks than for spheres. It is also significantly larger than the Ge refractive index. This allows the use of disks of smaller diameter than spheres to achieve the resonance effects at the same wavelength.

AB - The light reflection spectra of Ge disk nanoresonators on a Si substrate are studied, depending on their diameter (d) and height (h). The Ge disks, fabricated at temperatures close to room temperature using the bottom-up approach, exhibit a polycrystalline structure. The reflection at resonance wavelengths decreases more than 10 times, compared to surface areas without disks when the disk aspect ratio h/d increases to 1.0 and d > 100 nm. The strong dependence of the reflection minimum on h/d can be associated with the influence of the substrate. An effective refractive index, defined as neff = λm/d and determining the long-wavelength resonance mode position λm, turns out to be larger for disks than for spheres. It is also significantly larger than the Ge refractive index. This allows the use of disks of smaller diameter than spheres to achieve the resonance effects at the same wavelength.

KW - Antireflection

KW - Dielectric metasurfaces

KW - Germanium nanoparticles

KW - Nanophotonics

KW - CRYSTALLIZATION

KW - OPTICAL-PROPERTIES

KW - ISLANDS

KW - LAYERS

KW - NANOPARTICLES

KW - FABRICATION

KW - THIN-FILM

KW - RESONANCES

KW - GE

KW - SIO2

UR - http://www.scopus.com/inward/record.url?scp=85091631515&partnerID=8YFLogxK

U2 - 10.1016/j.optmat.2020.110466

DO - 10.1016/j.optmat.2020.110466

M3 - Article

AN - SCOPUS:85091631515

VL - 109

JO - Optical Materials

JF - Optical Materials

SN - 0925-3467

M1 - 110466

ER -

ID: 25602267