Size characteristics of surface plasmons and their manifestation in scattering properties of metal particles

Kolwas, K.; Derkachova, A.; Shopa, Mykola

doi:10.1016/j.jqsrt.2009.03.020

Cited by 104 publications

(82 citation statements)

References 33 publications

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“…Расчеты оптических свойств наночастиц алюминия выполнены в рамках теории Ми с учетом объемного расширения металла для наночастиц с радиусом 150 nm при комнатной температуре в вакууме по методике, описанной в [12,13] и адаптированной в [5]. Рост температуры от 298 до 933 K приводит к уменьшению коэффициента эффектив-ности рассеяния от 1.997 до 1.887 при энергии кванта 1.17 eV.…”

Section: поступило в редакцию 27 декабря 2016 гunclassified

Температурные Зависимости Оптических Свойств Наночастиц Алюминия

Каленский¹,

Звеков²

2017

Письма В Журнал Технической Физики

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Проведен анализ спектральных зависимостей оптических свойств алюминия при различных температурах. Предложены и апробированы аппроксимирующие выражения для мнимой части диэлектрической проницаемости. Выполнен расчет коэффициента отражения при нормальном падении света и оптических свойств наночастиц с радиусом 150 nm в температурном интервале 298−933 K для практически важных длин волн. Показано, что для алюминия наблюдается нетипичное поведение оптических свойств: повышение коэффициента отраже-ния и уменьшение коэффициента эффективности поглощения наночастиц при росте температуры, что связано с вкладом межзонных переходов в оптические свойства алюминия. DOI: 10.21883/PJTF.2017.11.44699.16642 Исследование влияния температуры на оптические свойства метал-лов и состоящих из них наночастиц является важной практической задачей. При получении наночастиц методом абляции металлов [1] температурная зависимость коэффициента отражения приводит к кор-рекции значения критической плотности энергии импульса [2]. Измене-ние оптических свойств пленки молибдена при лазерном воздействии вызывает уменьшение зоны абляции [3,4]. В [5] показано, что рост температуры приводит к повышению коэффициента эффективности поглощения наночастиц серебра на длине волны основной гармоники неодимового лазера, что может вызывать нелинейные оптические эффекты в поле лазерного излучения. Данные эффекты необходимо учитывать при структурировании материалов лазерным излучением [6]. В то же время экспериментальное исследование данных зависимостей представляет собой нетривиальную задачу и для большинства металлов 72

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Section: поступило в редакцию 27 декабря 2016 гunclassified

Температурные Зависимости Оптических Свойств Наночастиц Алюминия

Каленский¹,

Звеков²

2017

Письма В Журнал Технической Физики

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“…In [3,4] we discuss some problems arising from such an interpretation in more details and the reasons why Mie theory is not a handy tool in studying the size dependence of plasmon resonance frequencies. In particular, one of disadvantages is that the spectra must be collected for nanoparticles of many different sizes, which is the condition for a reliable reconstruct of such size dependence.In [3][4][5][6][7] we gave the direct and strict size characterisation of LSP resonances by solving the eigenvalue problem of nanospheres of different metals embedded in some dielectric environments. We found the radius dependence of resonance frequencies of multipolar LSP modes and the corresponding damping rates in alkali and noble nanoparticles and we increased the size range for data for the particles as large as 1000nm [7].…”

mentioning

confidence: 99%

“…The spectra collected for nanoparticles of different sizes have been used as a source of experimental data allowing to reconstruct the dependence of the (mostly dipole only) resonance position on size (e.g. [1][2][3]). In [3,4] we discuss some problems arising from such an interpretation in more details and the reasons why Mie theory is not a handy tool in studying the size dependence of plasmon resonance frequencies.…”

mentioning

confidence: 99%

“…[1][2][3]). In [3,4] we discuss some problems arising from such an interpretation in more details and the reasons why Mie theory is not a handy tool in studying the size dependence of plasmon resonance frequencies. In particular, one of disadvantages is that the spectra must be collected for nanoparticles of many different sizes, which is the condition for a reliable reconstruct of such size dependence.…”

mentioning

confidence: 99%

“…In [3][4][5][6][7] we gave the direct and strict size characterisation of LSP resonances by solving the eigenvalue problem of nanospheres of different metals embedded in some dielectric environments. We found the radius dependence of resonance frequencies of multipolar LSP modes and the corresponding damping rates in alkali and noble nanoparticles and we increased the size range for data for the particles as large as 1000nm [7].…”

mentioning

confidence: 99%

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Simple analytic tool for spectral control of dipole plasmon resonance frequency for gold and silver nanoparticles

Kolwas

Derkachova

2013

Photon. Lett. Poland

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Abstract-We give a mathematically simple tool allowing to predict dipole localized surface plasmon resonance frequency as a function of size for gold and silver nanoparticles in water. We compare the results with our previous general study resulting from strict solutions of the eigenvalue problem of metal nanospheres embedded in various dielectrics.The excitation of localized surface plasmons (LSP) on metal nanospheres offers a variety of applications in nanotechnology, biophysics, biochemistry etc. One of the most attractive advantages of LSP's application is the local enhancement of the electromagnetic (EM) field in the very proximity of the nanosphere. This effect takes place when the frequency of an incoming light field corresponds to the characteristic resonance frequency of LSP. This property is applied in surface-enhanced Raman spectroscopy (SERS), high-resolution microscopy, improvement of plasmonic solar cells and many plasmonic applications such as non-diffraction-limited guiding of light (e.g. via a chain of gold nanospheres). Gold and silver nanoparticles are important components of many plasmonic devices due to their chemical inertness and unique optical properties in the visible and near-infrared spectral range. In contrast to a metal with a flat surface, the curved surface of a nanoparticle enables direct optical excitation of plasmon resonances. It has been demonstrated that the plasmon-related optical features are sensitive to the size, shape, and environment of nanoparticles. Such sensitivity permits to tune the optical response of nanoparticles, thus making them suitable for a wide range of applications in photonics and optoelectronics. The possibility of manipulating LSP frequency is very attractive in applications.Effective controlling of spectral properties of plasmonic nanospheres is not possible without knowing the direct dependence of LSP resonance frequency and resonance spectral width (defined by plasmon damping rates) on particle size.The solutions of Mie deliver indispensable formalism enabling to calculate the EM fields in the near and far field regions around a spherical particle illuminated by a plane monochromatic wave. The resulting light intensities as well as the absorption and extinction cross-sections can be found for chosen particle size. Mie theory supposes that the nanoparticles and the surrounding medium are homogeneous and characterized by bulk permittivity functions which are the outside parameters of the theory. The problem is solved in spherical coordinates where electromagnetic fields are expressed as infinite sums of the partial electromagnetic waves of the "electric" (or transverse magnetic (TM)) and "magnetic" (or transverse electric (TE)) type.Usually, the positions of successive peaks, appearing in the extinction or absorption spectra are interpreted as directly related to positions of surface plasmon resonances. The spectra collected for nanoparticles of different sizes have been used as a source of experimental data allowing to reconstruct the dependence of t...

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A Review of Surface Plasmon Resonance‐Enhanced Photocatalysis

Hou

Cronin

2012

Adv Funct Materials

1,440

923

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In the past decade, the surface plasmon resonance of Ag and Au nanoparticles has been investigated to improve the efficiency of photocatalytic processes. The photocatalytic production of fuels is particularly interesting for its ability to store the sun's energy in chemical bonds that can be released later without producing harmful byproducts. This Feature Article reviews recent work demonstrating plasmon‐enhanced photocatalytic water splitting, reduction of CO2 with H2O to form hydrocarbon fuels, and degradation of organic molecules. Focus is placed on several possible mechanisms that have been previously discussed in the literature. A particular emphasis is given to several aspects of these mechanisms that are not fully understood and will require further investigation.

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Size characteristics of surface plasmons and their manifestation in scattering properties of metal particles

Cited by 104 publications

References 33 publications

Температурные Зависимости Оптических Свойств Наночастиц Алюминия

Температурные Зависимости Оптических Свойств Наночастиц Алюминия

Simple analytic tool for spectral control of dipole plasmon resonance frequency for gold and silver nanoparticles

A Review of Surface Plasmon Resonance‐Enhanced Photocatalysis

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