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Оптические свойства аморфного углерода, модифицированного металлами

выпускная квалификационная работа магистра

Оптические свойства аморфного углерода, модифицированного металлами

Abstract

Данная работа посвящена анализу оптических свойств аморфного гидрогенизированного углерода, модифицированного медью (a-C:H), синтезированного методом совместного магнетронного распыления графитовой и металлической мишеней в атмосфере аргон-водородной плазмы. Исследуется влияние на частоту и амплитуду резонансов Ми-Фрёлиха взаиморасположение пар, взаимодействующих друг с другом сферических медных наночастиц, внедренных в углеродную матрицу a-C:H. С этой целью используются известные выражения для поляризуемоcти таких пар. Делается вывод о влиянии поля электромагнитной волны в зависимости от перпендикулярного или параллельного расположения электрического вектора электромагнитной волны и прямой, соединяющей центры сфер. А также о влиянии диэлектрической проницаемости матрицы, окружающей кластеры. Исследовано влияние окисла двухвалентной меди, окружающего медные кластеры, на оптические свойства кластеров. Делается вывод о расщеплении полосы резонанса Ми-Фрёлиха а-С:H, связанном с межкластерным взаимодействием. Так же в работе рассмотрен случай удержания света в тонкой неоднородной пленке аморфного углерода, легированного медью. Эффект проявляется из-за рассеяния света наночастицами меди, внедренными в пленку. Локализация объясняет усиление «двухфононных» линий поглощения инфракрасного излучения наноразмерными алмазами, одновременно существующими в пленке.

This work is devoted to the analysis of the optical properties of amorphous hydrogenated carbon modified with copper (a-C:H) synthesized by the method of joint magnetron sputtering of graphite and metal targets in an argon-hydrogen plasma atmosphere. The effect on the frequency and amplitude of the Mi-Frelich resonances of the interposition of pairs of interacting spherical copper nanoparticles embedded in the carbon matrix a-C:H is investigated. For this purpose, well-known expressions are used for the polarizability of such pairs. The conclusion is made about the influence of the electromagnetic wave field depending on the perpendicular or parallel location of the electric vector of the electromagnetic wave and the straight line connecting the centers of the spheres. And also about the influence of the dielectric permittivity of the matrix surrounding the clusters. The effect of divalent copper oxide surrounding copper clusters on the optical properties of clusters is investigated. It is concluded that the splitting of the Mi-Frelich resonance band a-C:H is associated with the intercluster interaction. The paper also considers the case of light retention in a thin inhomogeneous film of amorphous carbon doped with copper. The effect is manifested due to the scattering of light by copper nanoparticles embedded in the film. Localization explains the amplification of "two-phonon" absorption lines of infrared radiation by nanoscale diamonds simultaneously existing in the film.

Keywords

Медь, инкапсуляция, Оптика, резонанс Ми-Ð¤Ñ€Ñ‘Ð»Ð¸Ñ Ð°, metamaterials, encapsulation, Углерод, метаматериалы, Mie-Frohlich resonance

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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