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Multicomponent Resonant Nanostructures: Plasmonic and Photothermal Effects
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Theoretical Chemistry and Biology. Siberian Federal University : Krasnoyarsk , RU.ORCID iD: 0000-0002-2049-7259
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In recent decades, plasmonic nanoparticles have attracted considerable attention due to their ability to localize electromagnetic energy at a scale much smaller than the wavelength of optical radiation. The study of optical plasmon waveguides (OPWs) in the form of chains of nanoparticles is important for modern photonics. However, the widespread use of OPWs is limited due to the suppression of the resonance properties of classical plasmon materials under laser irradiation. The study of the influence of nanoparticle heating on the optical properties of waveguides and the search for new materials capable of stable functioning at high temperatures is an important task.

In this thesis, the processes occurring during heating of plasmon nanoparticles and OPWs are studied. For this purpose, a model was developed that takes into account the heat transfer between the particles of an OPW and the environment. The calculations used temperature-dependent optical constants. As one of possible ways to avoid thermal destabilization of plasmon resonanses, new materials for OPWs formed by nanoparticles were proposed. I show that titanium nitride is a promising thermally stable material, that might be useful for manufacturing of OPWs and that works in high intensity laser radiation.

Another hot topic at present is the study of periodic structures of resonant nanoparticles. Periodic arrays of nanoparticles have a unique feature: the manifestation of collective modes, which are formed due to the hybridization of a localized surface plasmon resonance or a Mie resonance and the Rayleigh lattice anomaly. Such a pronounced hybridization leads to the appearance of narrow surface lattice resonances, the quality factor of which is hundreds of times higher than the quality factor of the localized surface plasmon resonance alone. Structures that can support not only electric, but also magnetic dipole resonances becomes extremely important for modern photonics on chip systems. An example of a material of such particles is silicon. Using the method of generalized coupled dipoles, I studied the optical response of arrays of silicon nanoparticles. It is shown that under certain conditions, selective hybridization of only one of the dipole moments with the Rayleigh anomaly occurs.

To analyze optical properties of intermediate sized particles with N = 103-105 atoms and diameter of particle d < 12 nm an atomistic approach, where the polarizabilities can be obtained from the atoms of the particle, could fill an important gap in the description of nanoparticle plasmons between the quantum and classical extremes. For this purpose I introduced an extended discrete interaction model where every atom makes a difference in the formation optical properties of nanoparticles within this size range. In this range are first principal approaches not applicable due to the high number of atoms and classical models based on bulk material dielectric constants are not available due to high influence from quantum size effects and corrections to the dielectric constant. To parametrize this semi-empirical model I proposed a method based on the concept of plasmon length. To evaluate the accuracy of the model, I performed calculations of optical properties of nanoparticles with different shapes: regular nanospheres, nanocubes and nanorods. Subsequently, the model was used to calculate hollow nanoparticles (nano-bubbles).

Place, publisher, year, edition, pages
Stockholm, Sweden: KTH Royal Institute of Technology, 2019. , p. 72
Series
TRITA-CBH-FOU ; 2019:69
Keywords [en]
plasmonics, photonics, nanoparticles
National Category
Natural Sciences
Research subject
Theoretical Chemistry and Biology
Identifiers
URN: urn:nbn:se:kth:diva-264507ISBN: 978-91-7873-395-8 (print)OAI: oai:DiVA.org:kth-264507DiVA, id: diva2:1373886
Public defence
2019-12-19, Room nr: B4:1026 Code: FB42, Roslagstullsbacken 21, Huvudbyggnaden, floor 4, AlbaNova, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 2019-11-28

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-11-28Bibliographically approved
List of papers
1. Thermal effects in systems of colloidal plasmonic nanoparticles in high-intensity pulsed laser fields [Invited]: publisher's note (vol 7,pg 555, 2017)
Open this publication in new window or tab >>Thermal effects in systems of colloidal plasmonic nanoparticles in high-intensity pulsed laser fields [Invited]: publisher's note (vol 7,pg 555, 2017)
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2017 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 7, no 3, p. 799-799Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Optical Society of America, 2017
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-205517 (URN)10.1364/OME.7.000799 (DOI)000395672700016 ()2-s2.0-85014118005 (Scopus ID)
Note

QC 20170509

Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2019-11-28Bibliographically approved
2. Titanium nitride nanoparticles as an alternative platform for plasmonic waveguides in the visible and telecommunication wavelength ranges
Open this publication in new window or tab >>Titanium nitride nanoparticles as an alternative platform for plasmonic waveguides in the visible and telecommunication wavelength ranges
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2018 (English)In: Photonics and Nanostructures - Fundamentals and Applications, ISSN 1569-4410, Vol. 30, p. 50-56Article in journal (Refereed) Published
Abstract [en]

We propose to utilize titanium nitride (TiN) as an alternative material for linear periodic chains (LPCs) of nanoparticles (NPs) which support surface plasmon polariton (SPP) propagation. Dispersion and transmission properties of LPCs have been examined within the framework of the dipole approximation for NPs with various shapes: spheres, prolate and oblate spheroids. It is shown that LPCs of TiN NPs support high-Q eigenmodes for an SPP attenuation that is comparable with LPCs from conventional plasmonic materials such as Au or Ag, with the advantage that the refractory properties and cheap fabrication of TiN nanostructures are more preferable in practical implementations compared to Au and Ag. We show that the SPP decay in TiN LPCs remains almost the same even at extremely high temperatures which is impossible to reach with conventional plasmonic materials. Finally, we show that the bandwidth of TiN LPCs from non-spherical particles can be tuned from the visible to the telecommunication wavelength range by switching the SPP polarization, which is an attractive feature for integrating these structures into modern photonic devices.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Nanoparticle, Plasmon waveguide, Refractory plasmonics, Surface plasmon polariton, Titanium nitride
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-229236 (URN)10.1016/j.photonics.2018.04.005 (DOI)2-s2.0-85046117367 (Scopus ID)
Note

QC 20180601

Available from: 2018-06-01 Created: 2018-06-01 Last updated: 2019-11-28Bibliographically approved
3. Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces
Open this publication in new window or tab >>Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces
2019 (English)In: Journal of the Optical Society of America. B, Optical physics, ISSN 0740-3224, E-ISSN 1520-8540, Vol. 36, no 7, p. E21-E29Article in journal (Refereed) Published
Abstract [en]

Collective lattice resonances in disordered 2D arrays of spherical Si nanoparticles (NPs) have been thoroughly studied within the framework of the coupled dipole approximation. Three types of defects have been analyzed: positional disorder, size disorder, and quasi-random disorder. We show that the positional disorder strongly suppresses either the electric dipole (ED) or the magnetic dipole (MD) coupling, depending on the axis along which the NPs are shifted. Contrarily, size disorder strongly affects only the MD response, while the ED resonance can be almost intact, depending on the lattice configuration. Finally, random removing of NPs from an ordered 2D lattice reveals a quite surprising result: hybridization of the ED and MD resonances with lattice modes remains observable even in the case of random removing of up to 84% of the NPs from the ordered array. The reported results could be important for rational design and utilization of metasurfaces, solar cells, and other alldielectric photonic devices. 

Place, publisher, year, edition, pages
Optics Info Base, Optical Society of America, 2019
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:kth:diva-255429 (URN)10.1364/JOSAB.36.000E21 (DOI)000473321200004 ()2-s2.0-85069600603 (Scopus ID)
Note

QC 20190815

Available from: 2019-08-15 Created: 2019-08-15 Last updated: 2019-11-29Bibliographically approved
4. Engineering novel tunable opticalhigh-Q nanoparticle array lters for a wide range of wavelengths
Open this publication in new window or tab >>Engineering novel tunable opticalhigh-Q nanoparticle array lters for a wide range of wavelengths
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(English)Manuscript (preprint) (Other academic)
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-264495 (URN)
Note

QC 20191212

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-12-12Bibliographically approved
5. The Extended Discrete Interaction Model: Plasmonic Excitations of Silver Nanoparticles
Open this publication in new window or tab >>The Extended Discrete Interaction Model: Plasmonic Excitations of Silver Nanoparticles
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2019 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 123, no 47, p. 28867-28880Article in journal (Refereed) Published
Abstract [en]

We present a new atomistic model for plasmonic excitations and optical properties of metallic nanoparticles, which collectively describes their complete response in terms of fluctuating dipoles and charges that depend on the local environment and on the morphology of the composite nanoparticles. Being atomically dependent, the total optical properties, the complex polarizability, and the plasmonic excitation of a cluster refer to the detailed composition and geometric characteristics of the cluster, making it possible to explore the role of the material, alloy mixing, size, form shape, aspect ratios, and other geometric factors down to the atomic level and making it useful for the design of plasmonic particles with particular strength and field distribution. The model is parameterized from experimental data and, at present, practically implementable for particles up to more than 10 nm (for nanorods even more), thus covering a significant part of the gap between the scales where pure quantum calculations are possible and where pure classical models based on the bulk dielectric constant apply. We utilized the method to both spherical and cubical clusters along with nanorods where we demonstrate both the size, shape, and ratio dependence of plasmonic excitations and connect this to the geometry of the nanoparticles using the plasmon length.

National Category
Other Physics Topics Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-264485 (URN)10.1021/acs.jpcc.9b07410 (DOI)
Note

QC 20191129

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-11-29Bibliographically approved
6. Collective lattice resonances in arrays of dielectric nanoparticles: a matter of size
Open this publication in new window or tab >>Collective lattice resonances in arrays of dielectric nanoparticles: a matter of size
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2019 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 44, no 23, p. 5743-5746Article in journal (Refereed) Published
Abstract [en]

Collective  lattice  resonances  (CLRs)  in  finite-sized  2Darrays of dielectric nanospheres have been studied via the coupled dipole approximation. We show that even for sufficiently large arrays, up to 100×100 nanoparticles (NPs),electric or magnetic dipole CLRs may differ significantly from the ones calculated for infinite arrays with the same NP  sizes  and  interparticle  distances.  The  discrepancy  is explained  by  the  existence  of  a  sufficiently  strong  cross-interaction between electric and magnetic dipoles inducedat NPs in finite-sized lattices, which is ignored for infinite arrays.  We  support  this  claim  numerically  and  propose an analytic model to estimate a spectral width of CLRs for finite-sized arrays. Given that most of the current theoretical and numerical researches on collective effects in arrays of dielectric NPs rely on modeling infinite structures, there ported findings may contribute to thoughtful and optimal design of inherently finite-sized photonic devices.

National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-264493 (URN)10.1364/OL.44.005743 (DOI)
Note

QC 20191204

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-12-04Bibliographically approved
7. Plasmonic nano-bubbles: atomistic discrete interaction versus classic electrodynamics models
Open this publication in new window or tab >>Plasmonic nano-bubbles: atomistic discrete interaction versus classic electrodynamics models
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(English)Manuscript (preprint) (Other academic)
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-264496 (URN)
Note

QC 20191129

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-11-29Bibliographically approved

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