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Dissertations / Theses on the topic 'Plasmonic properties'

Author: Grafiati
Published: 20 April 2024
Last updated: 25 July 2025

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1

Cole, R. M. "Plasmonic properties of metal nanovoids." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597832.

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This thesis describes a study into the plasmonic properties of nanostructured metallic films. Structures are produced by electrochemically depositing metal through a self-assembled template of polymer micro-spheres. This versatile technique allows nano-structures made from metals which can be electrodeposited to be produced quickly and cheaply. Geometries ranging from arrays of shallow dishes, to sharp metallic spikes and encapsulated spherical cavities can all be produced on the same sample. This thesis presents an in-depth study into the properties of delocalised and localised surface plasmo
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2

Dieleman, Frederik. "Quantum properties of plasmonic waveguides." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/49436.

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This thesis investigates properties of quantum states of light while travelling as surface plasmon polaritons in plasmonic waveguides and structures. The bosonic nature of SPPs has been shown in previous work by performing a Hong-Ou-Mandel interference experiment with a plasmonic scattering-based beam splitter. Here, we show the same interference with a higher statistical power thanks to an improved set-up. A visibility of 59 ± 1 % is obtained in the two-photon interference, clearly breaking the classical limit of 50 %. The importance of the phase-relations between the different modes in the b
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3

Indrehus, Sunniva. "Plasmonic properties of supported nanoparticles." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS136.pdf.

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Après quelques rappels d’électromagnétisme et sur la permittivité des métaux, le premier chapitre est dévolu à la présentation des nanoparticules en optique, et comment les modèles analytiques de polarisabilité permettent de prendre en compte la présence d’un substrat et de nanoparticules voisines. Les deux chapitres suivants reprend un certain nombre d’éléments de la théorie de Bedeaux-Vlieger sur la charge excédentaire et les susceptibilités de surface, et sa mise en œuvre pour les nanoparticules sur un substrat plan. Cette théorie, dont les bases ont été établies à la fin des années 70, a d
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4

Peruch, Silvia. "Ultrafast properties of plasmonic nanorod metamaterial." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/ultrafast-properties-of-plasmonic-nanorod-metamaterial(d981b5e4-b959-4193-8cf1-219b68de08d6).html.

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Plasmonic metamaterials have customized linear and nonlinear optical properties. This thesis investigates the properties of an anisotropic plasmonic metamaterial, consisting of aligned, interacting gold nanorods, to perform ultrafast light modulation, exploiting the intrinsic Kerr nonlinearity of gold. This e ect is based on an illumination-intensity-dependent change in the gold's permittivity, which takes place on ultrafast timescales and induces the intensity-dependent change of the metamaterial's re ection and transmission. A comprehensive theoretical and numerical analysis of the linear an
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5

Chen, Lihui. "Synthesis and Plasmonic Properties of Copper-based Nanocrystals." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/217134.

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6

Strandberg, Östman Felicia. "Optical Properties of Plasmonic Ag/Ni Square Nanostructures." Thesis, Uppsala universitet, Materialfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256885.

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7

Ching, Suet Ying. "Plasmonic properties of silver-based alloy thin films." HKBU Institutional Repository, 2015. https://repository.hkbu.edu.hk/etd_oa/194.

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The plasmonic properties of silver-based alloy thin films were studied. Silver-ytterbium (Ag-Yb) and silver-magnesium (Ag-Mg) prepared by thermal co-evaporation were investigated extensively for various thin film properties. The optical properties were intensively analyzed and discussed because the dielectric response of a material is particularly significant in terms of its plasmonic properties. The study of silver-based alloy thin films has been mostly about Ag alloying with other transition metals, but the results of Ag-Yb and Ag-Mg in this work showed that the intensity of plasma resonance
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8

Hung, Yu-Ju. "Studies of the optical properties of plasmonic nanostructures." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7735.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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9

Kolkowski, Radoslaw. "Studies of nonlinear optical properties of plasmonic nanostructures." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN001/document.

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Le but de cette thèse et de la recherche associée est une démonstration des avantages d’une combinaison de propriétés inhabituelles de nanostructures plasmoniques avec des aspects parmi les plus intéressants de l’optique non-linéaire. Pour cet effet, la modélisation analytique et numérique a été combiné avec le travail expérimental, qui comprenait la production de nanostructures et les mesures effectuées au moyen de la microscopie confocale non-linéaire résolue en polarisations et de la technique Z-scan modifiée (nommée “f-scan”).Il a été montré que l’anisotropie efficace de génération de seco
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10

MAGNOZZI, MICHELE. "Temperature-dependent optical properties of composite plasmonic nanomaterials." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/941310.

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11

FERRERA, MARZIA. "Local optical properties of 2D semiconductor/plasmonic heterostructures." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1077989.

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The possibility to control the properties of low-dimensional semiconductors via the exploitation of properly engineered architectures shows promising implications for several potential applications in the fields of optoelectronic and quantum technologies. Among the plethora of semiconducting materials, two-dimensional group 6 transition metal dichalcogenides (TMDCs), when thinned down to the three-atoms-thick monolayer (ML), exhibit a transition of the electronic bandgap from indirect to direct, with the bandgap energy falling within the visible spectral range. This, together with other singul
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12

Woollacott, Claire. "Electronic and plasmonic properties of real and artificial Dirac materials." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18227.

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Inspired by graphene, I investigate the properties of several different real and artificial Dirac materials. Firstly, I consider a two-dimensional honeycomb lattice of metallic nanoparticles, each supporting localised surface plasmons, and study the quantum properties of the collective plasmons resulting from the near field dipolar interaction between the nanoparticles. I analytically investigate the dispersion, the effective Hamiltonian and the eigenstates of the collective plasmons for an arbitrary orientation of the individual dipole moments. When the polarisation points close to normal to
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13

Liu, Junjun. "Optical properties of chiral plasmonic nanoparticles and mesoporous silicon nanowires." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/385.

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Structural engineering plays an essential role in controlling the optical properties of nanostructures, which are of fundamental and practical interest in nanoscience and technology. In this study, two kinds of nanostructural engineering were investigated systematically to enrich nano-optics research: structural helicity was imposed on plasmonic nanoparticles (NPs) with chiroptical activity engineerable in the ultraviolet (UV)-visible region, and porosification was imposed on silicon nanowires (SiNWs) to tune optical interaction and photoluminescence (PL).. The generation of helical metamateri
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14

Nguyen, Thi Tuyet Mai. "Elaboration and optical properties of thermosensitive plasmonic hybrid nanostructures." Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCC285.

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La conception de nanomateriaux hybrides multifonctionnels est un champ de recherche en plein essor. Notamment, la combinaison de polymères thermosensibles et de nanoparticules d'or (GNPs) offre des perspectives prometteuses pour l'élaboration de matériaux à grande valeur ajoutée pour des applications dans le domaine des capteurs, du biomédical et de la catalyse. Dans ce travail de thèse, nous avons élaboré des nanostructures hybrides combinant nanoparticules d'or et poly(N-isopropylacrylamide) (PNIPAM), en s'appuyant sur des techniques de lithographies et de polymérisation radicalaire contrôlé
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15

Agreda, Adrian. "Electrical control of the nonlinear properties of plasmonic nanostructures." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCK010.

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Ce travail rassemble les technologies de nanoélectronique et de nano-photonique pour créer un dispositif électro-plasmonique dont les propriétés optiques linéaires et non linéaires sont contrôlées électriquement. Ici, nous présentons la première démonstration de la modulation de photoluminescence non linéaire par des moyens électriques dans un cas d'étude simple. A cette fin, les nanoantennes plasmoniques sont interfacées avec des connexions électriques induisant des régions localisées d’accumulation et de déplétion d'électrons et affectant ainsi la réponse optique. De plus, une analyse complè
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16

Ji, Botao. "Synthesis and optical properties of plasmonic fluorescent quantum dots." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066674/document.

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Grâce aux plasmons de surface des nanoparticules métalliques et aux propriétés optiques et électroniques des quantum dots (QDs), les nanostructures QD/métal suscitent beaucoup d'intérêt. Cependant, bien que prometteurs, les hybrides QD/or colloïdaux n'ont été que rarement obtenus.Nous avons mis au point la première méthode de synthèse généralisée conduisant à des structures hybrides cœur/coque/coque QD/SiO2/Au (appelées QDs dorés). Tout d'abord, les QDs hydrophobes sont encapsulés individuellement dans des billes de silice par émulsion inverse. Les nanoparticules obtenues sont ensuite recouver
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17

Ji, Botao. "Synthesis and optical properties of plasmonic fluorescent quantum dots." Electronic Thesis or Diss., Paris 6, 2014. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2014PA066674.pdf.

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Grâce aux plasmons de surface des nanoparticules métalliques et aux propriétés optiques et électroniques des quantum dots (QDs), les nanostructures QD/métal suscitent beaucoup d'intérêt. Cependant, bien que prometteurs, les hybrides QD/or colloïdaux n'ont été que rarement obtenus.Nous avons mis au point la première méthode de synthèse généralisée conduisant à des structures hybrides cœur/coque/coque QD/SiO2/Au (appelées QDs dorés). Tout d'abord, les QDs hydrophobes sont encapsulés individuellement dans des billes de silice par émulsion inverse. Les nanoparticules obtenues sont ensuite recouver
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18

Pechprasarn, Suejit. "Analysis of sensitivity and resolution in plasmonic microscopes." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/13100/.

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Surface plasmons (SP) are guided electromagnetic wave propagating along the surface of metal. The properties of SP are affected by the material attached to the metallic surface so they can be used as a very sensitive sensor capable of detecting the deposition of subnanometric layers of dielectric. SP has been widely investigated for biosensor applications and the theory is well established. Although SP sensors have been well studied, integrating the SP to a microscope is a relatively young field. Since the SPs are surface waves; microscopy techniques to optimise the SP microscope performance w
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19

DeSantis, Christopher John. "Manipulating the architecture of bimetallic nanostructures and their plasmonic properties." Thesis, Indiana University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3665584.

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<p> There has been much interest in colloidal noble metal nanoparticles due to their fascinating plasmonic and catalytic properties. These properties make noble metal nanoparticles potentially useful for applications such as targeted drug delivery agents and hydrogen storage devices. Historically, shape-controlled noble metal nanoparticles have been predominantly monometallic. Recent synthetic advances provide access to bimetallic noble metal nanoparticles wherein their inherent multifunctionality and ability to fine tune or expand their surface chemistry and light scattering properties of met
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20

Kamakura, Ryosuke. "Fabrications and optical properties of plasmonic arrays without noble metals." Kyoto University, 2018. http://hdl.handle.net/2433/232046.

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21

Sediq, Khalid. "The optical properties of photonic-crystal nanocavities containing plasmonic nanoparticles." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12324/.

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22

Pellegrini, Giovanni. "Modeling the optical properties of nanocluster-based functional plasmonic materials." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425967.

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Optical properties of nanocluster-based plasmonic materials were studied along this thesis by the Generalized Multiparticle Mie approach. Far- and local-field optical properties of basic plasmonic structures such as sphere dimers and chains were successfully analyzed as a function of their composition and their topological features. The provided physical insight is then exploited in the modeling of strongly coupled complex structures obtained by ion beam processing. These systems were called nanoplanets since they are constituted by a large central cluster surrounded by small satellite ones v
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23

Pathak, Nilesh Kumar. "Study of plasmonic properties of metal nanoparticles and its applications." Thesis, IIT Delhi, 2016. http://localhost:8080/xmlui/handle/12345678/7040.

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24

Barbosa, Neira Andres David. "Analysis and characterization of the nonlinear optical properties of plasmonic metamaterials." Thesis, King's College London (University of London), 2015. http://kclpure.kcl.ac.uk/portal/en/theses/analysis-and-characterization-of-the-nonlinear-optical-properties-of-plasmonic-metamaterials(aa1f642a-eb29-4a21-b599-e5d3b7acddad).html.

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Metamaterials are materials whose optical properties can be designed through the accurate engineering of their structure on the subwavelength scale. They have enabled the discovery and study of a variety of interesting new optical properties not normally present in materials found in nature. Furthermore, by designing the local electromagnetic field distributions of such metamaterials, it is possible to engineer not only their linear optical properties but also their nonlinear response, which is fundamental for the development of nonlinear and active nanophotonics for all-optical information pr
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25

Guidez, Emilie Brigitte. "Quantum mechanical origin of the plasmonic properties of noble metal nanoparticles." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/17314.

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Doctor of Philosophy<br>Department of Chemistry<br>Christine M. Aikens<br>Small silver and gold clusters (less than 2 nm) display a discrete absorption spectrum characteristic of molecular systems whereas larger particles display a strong, broad absorption band in the visible. The latter feature is due to the surface plasmon resonance, which is commonly explained by the collective dipolar motion of free electrons across the particle, creating charged surface states. The evolution between molecular properties and plasmon is investigated. Time-dependent density functional theory (TDDFT) calculat
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26

Myers, Kirby. "Experiments on the Thermal, Electrical, and Plasmonic Properties of Nanostructured Materials." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/83822.

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Nanofabrication techniques continue to advance and are rapidly becoming the primary route to enhancement for the electrical, thermal, and optical properties of materials. The work presented in this dissertation details fabrication and characterization techniques of thin films and nanoparticles for these purposes. The four primary areas of research presented here are thermoelectric enhancement through nanostructured thin films, an alternative frequency-domain thermoreflectance method for thin film thermal conductivity measurement, thermal rectification in nanodendritic porous silicon, and plasm
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27

Khosravi, Khorashad Larousse. "Theoretical and Computational Study of Optical Properties of Complex Plasmonic Structures." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou150834414639462.

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28

Moeferdt, Matthias. "Nonlocal and Nonlinear Properties of Plasmonic Nanostructures Within the Hydrodynamic Drude Model." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18129.

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In dieser Arbeit werden die nichtlokalen sowie nichtlinearen Eigenschaften plasmonischer Nanopartikel behandelt, wie sie im hydrodynamischen Modell enthalten sind. Das hydrodynamische Materialmodell stellt eine Erweiterung des Drude Modells dar, in der Korrekturen in der Beschreibung des Elektronenplasmas berücksichtigt werden. Einer ausführlichen Einführung des Materialmodells folgt eine analytische Diskussion der Auswirkungen der Nichtlokalität am Beispiel eines einzelnen Zylinders. Hierbei werden die durch die Nichtlokalität herbeigeführten Frequenzverschiebungen in den Streu- und Absorptio
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29

Patoka, Piotr [Verfasser]. "Tunable plasmonic properties of nanostructures fabricated by shadow nanosphere lithography / Piotr Patoka." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/102549024X/34.

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30

Near, Rachel Deanne. "Theoretical and experimental investigation of the plasmonic properties of noble metal nanoparticles." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52181.

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Noble metal nanoparticles are of great interest due to their tunable optical and radiative properties. The specific wavelength of light at which the localized surface plasmon resonance occurs is dependent upon the shape, size and composition of the particle as well as the dielectric constant of the host medium. Thus, the optical properties of noble metal nanoparticles can be systematically tuned by altering these specific parameters. The purpose of this thesis is to investigate some of these properties related to metallic nanoparticles. The first several chapters focus on theoretical mode
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31

Kravets, Vira V. "Optical Properties of Plasmonic Nanostructures for Bio-Imaging and Bio-Sensing Applications." Thesis, University of Colorado at Colorado Springs, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10282081.

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<p>Kravets, Vira V. (Ph.D., Physics) Optical properties of plasmonic nanostructures for bio-imaging and bio-sensing applications Dissertation directed by Associate Professor Anatoliy Pinchuk. ABSTRACT This dissertation explores the physics of free electron excitations in gold nanoparticle chains, silver nanoparticle colloids, and thin gold films. Electron excitations in nanostructures (surface plasmons, SP) are responsible for unique optical properties, which are applied in bio-sensing and bio-imaging applications. For gold nanoparticle chains, the effect of SP on resonance light absorption w
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32

Rose, Aaron Harold. "Emergent Properties of Plasmonic Systems in the Weak to Strong Coupling Regimes:." Thesis, Boston College, 2019. http://hdl.handle.net/2345/bc-ir:108654.

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Thesis advisor: Michael J. Naughton<br>In this dissertation I present studies of plasmonic interactions in different coupling regimes, from zero to strong coupling and approaching ultrastrong coupling. Different physics are manifest in each regime, with different possible applications. The first project uses finite element electromagnetic simulations to model plasmonic waveguides that couple near field light into the far-field for sub-diffraction limited microscopy. Wavelength/32 resolution is shown by minimizing coupling between adjacent waveguiding nanowires, with minimal attenuation over a
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33

Hajimammadov, R. (Rashad). "Plasmonic, electrical and catalytic properties of one-dimensional copper nanowires:effect of native oxides." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526218878.

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Abstract Recent advances in materials synthesis resulted in a rediscovery of the low cost copper in its one and two-dimensional forms and project newer applications of this metal in fields not considered before. In this thesis, one-dimensional copper, i.e. nanowires are synthesized by a hydrothermal route and explored for their chemical, electrical, catalytic and plasmonic properties with highlighted advantages, benefited from their size and shape compared to thin film and bulk copper. Characterization of copper nanowires and their native oxides were performed using a number of analytical tech
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34

Jeannin, Mathieu Emmanuel. "Control of the emission properties of semiconducting nanowire quantum dots using plasmonic nanoantennas." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY053/document.

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Ce travail de thèse porte sur l'étude du couplage entre des boîtes quantiques (BQs) insérées dans des nanofils à semiconducteurs et des antennes plasmoniques. Un couplage efficace requiert une caractérisation complète des leurs propriétés optiques respectives, pour assurer un recouvrement spectral et spatial de l'émission de la boîte et du mode de l'antenne et l'alignement de la polarisation du mode plasmonique avec l'émission de la BQ.Les propriétés optiques d'antennes patchs plasmoniques circulaires ont été étudiées par cathodoluminescence (CL). Nous avons montré avec un modèle analytique de
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Funes-Hernando, Daniel. "Advanced gold-based nanowires : from hybrid structures to original plasmonic and optical properties." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT4076/document.

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La plasmonique exploite les plasmons polaritons de surface (SPP) et les plasmons de surface localisés (LSP). Les nanostructures 1D métalliques et hybrides ouvrent la voie à l’exploitation combinée de la nature de propagation du SPP et du caractère émissif des LSPR. Durant ma thèse, j'ai conçu des nanofils fonctionnels à base d'or pour l'exploration et l'exploitation de ces propriétés. Un résultat important concerne la conception de nanofils coaxiaux pour permettre la détection de signaux Raman à distance. La spectroscopie Raman à distance repose sur la séparation de plusieurs micromètres de l’
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Dienerowitz, Maria. "Plasmonic effects upon optical trapping of metal nanoparticles." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/1634.

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Optical trapping of metal nanoparticles investigates phenomena at the interface of plasmonics and optical micromanipulation. This thesis combines ideas of optical properties of metals originating from solid state physics with force mechanism resulting from optical trapping. We explore the influence of the particle plasmon resonance of gold and silver nanospheres on their trapping properties. We aspire to predict the force mechanisms of resonant metal particles with sizes in the Mie regime, beyond the Rayleigh limit. Optical trapping of metal nanoparticles is still considered difficult, yet it
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Walter, Felicitas [Verfasser]. "Optical properties and encoding of information of nonlinear and active plasmonic metasurfaces / Felicitas Walter." Paderborn : Universitätsbibliothek, 2018. http://d-nb.info/1171897685/34.

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38

MOHAMMED, AHMED ALSADIG AHMED. "Harnessing the plasmonic properties of gold nanoparticles: functionalization strategies coupled with novel spectroscopic tools." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3030486.

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Metallic plasmonic substrates such as gold nanoparticles (AuNPs) have fascinated researchers due to their usefulness in verious interdisciplinary studies at the interface between applied physics, biochemistry, engineering, and medicine. A good understanding of the physics of these noble nanostructures, particularly the plasmonic and optical properties, can be employed to improve a wide range of sensors and electronic devices. The relevance of molecular recognition and the binding of biological and chemical entities to diagnostics, biosensors, and drug delivery has attracted significant resea
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Baral, Susil. "Fundamental Studies of Photothermal Properties of a Nanosystem and the Surrounding Medium Using Er3+ Photoluminescence Nanothermometry." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1493301965290212.

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40

Amooali, Khosroabadi Akram. "Optical and Electrical Properties of Composite Nanostructured Materials." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/333480.

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A novel lithographic fabrication method is used to fabricate nanopillars arrays of anisotropic Ag and TCO electrodes. Optical and electrical properties of the electrodes including bandgap, free carrier concentration, resistivity and surface plasmon frequency of different electrodes can be tuned by adjusting the dimensions and geometry of the pillars. Given the ability to tune the nonlocal responses of the plasmonic field enhancements, we attempt to determine the nature of the effective refractive index profile within the visible wavelength region for multi-layer hybrid nanostructures. Knowle
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Tanyeli, Irem. "Effect Of Substrate Type On Structural And Optical Properties Of Metal Nanoparticles For Plasmonic Applications." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613563/index.pdf.

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In this work, the structural and optical properties of metal nanoparticles fabricated on various substrates have been investigated. The particles were fabricated by electron beam lithography (EBL) and dewetting of a thin metal film. The advantages and disadvantages of these two fabrication techniques are discussed by considering the properties of the nanoparticles and the applicability to large area substrates. Being a practical fabrication method, dewetting can be applied to any substrate with either small or large surfaces. For comparison between different sample types, some process paramete
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Alber, Ina [Verfasser], and Reinhard [Akademischer Betreuer] Neumann. "Synthesis and Plasmonic Properties of Metallic Nanowires and Nanowire Dimers / Ina Alber ; Betreuer: Reinhard Neumann." Heidelberg : Universitätsbibliothek Heidelberg, 2012. http://d-nb.info/1177039982/34.

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43

Bordley, Justin Andrew. "Cubic architectures on the nanoscale: The plasmonic properties of silver or gold dimers and the catalytic properties of platinum-silver alloys." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55025.

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This thesis explores both the optical and catalytic properties of cubic shaped nanoparticles. The investigation begins with the sensing capabilities of cubic metal dimers. Of all the plasmonic solid nanoparticles, single Ag or Au nanocubes exhibit the strongest electromagnetic fields. When two nanoparticles are in close proximity to each other the formation of hot spots between plasmonic nanoparticles is known to greatly enhance these electromagnetic fields even further. The sensitivity of these electromagnetic fields as well as the sensitivity of the plasmonic extinction properties is importa
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44

Babocký, Jiří. "Optické vlastnosti asymetrických plasmonických struktur." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231373.

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This diploma thesis deals with study of resonance modes of plasmonic structures. First part provides an overview of theoretical models, which explain the resonanace modes in plasmonic structures. Next part describes technology of electron beam lithography. First section of experimental part deas with technological processes leading to an improvement of resulting structures made by electron beam lithography that is followed by lift-off process. Last part focuses on a study of reflectance spactra of plasmonic antenas and the identification of resonance modes.
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Liyanage, Dilhara. "Efficient Integration of Plasmonic and Excitonic Properties of Metal and Semiconductor Nanostructures via Sol-Gel Assembly." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4768.

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Research in nanoscience has gained noteworthy interest over the past three decades. As novel chemical and physical properties that are vastly different from extended solids are realized in nanosized materials, nanotechnology has become the center of attention for material in research community. Much to our amazement, investigations in the past two decades revealed that the nanocrystalline semiconductors are “THE PRIME CANDIDATES” to meet the growing energy demand, sensor development, cellular imaging and a number of other optoelectronic applications. Nonetheless, synthesis of nanostructures wi
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Selvanathan, Pramila. "Photochromic switches for luminescence, plasmonic resonance, single molecule magnetic properties, and molecular wires for nano junctions." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S145.

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Ce travail est consacré à la synthèse et la caractérisation des commutateurs et des fils moléculaires incorporant l'unité et le ruthénium organométalliques fractions photochromiques. La première partie traite de lanthanides complexe Yb combiné avec l'unité et le ruthénium acétylure fractions photochromiques afin de moduler la luminescence avec l'aide de redox et de stimuli lumineux. Dans la deuxième partie explique la combinaison d'unités DTE photochromiques avec des fragments acétylures de ruthénium pour fixer sur la surface de nanoparticules métalliques afin d'affiner leur résonance plasmoni
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De, Silva Vashista C. "Core-Shell Based Metamaterials: Fabrication Protocol and Optical Properties." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062904/.

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The objective of this study is to examine core-shell type plasmonic metamaterials aimed at the development of materials with unique electromagnetic properties. The building blocks of metamaterials under study consist of gold as a metal component, and silica and precipitated calcium carbonate (PCC) as the dielectric media. The results of this study demonstrate important applications of the core-shells including scattering suppression, airborne obscurants made of fractal gold shells, photomodification of the fractal structure providing windows of transparency, and plasmonics core-shell with a ga
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Stockhausen, Verena. "Modulation of material properties using Nanoelectrochemistry : from active plasmonic devices and photovoltaic systems to ultrathin electroactive layers." Paris 7, 2011. http://www.theses.fr/2011PA077071.

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L'essor de l'électronique plastique a conduit à une révolution dans la vie quotidienne ces vingt dernières années. Le premier chapitre traite des systèmes hybrides polymères conducteurs/dispositifs plasmoniques. La commutation de l'état électronique du polymère modifie réversiblement les réponses optiques des systèmes plasmoniques. De plus, en jouant sur la nature du polymère, la réponse optique de ces systèmes peut être finement ajustée. Dans le deuxième chapitre, nous aborderons l'étude des films ultraminces électroactifs générés par electroréduction d'un sel de diazonium. Premièrement, le g
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Wickremasinghe, Niranjala D. "Optical Properties of Organic Films, Multilayers and Plasmonic Metal-organic Waveguides Fabricated by Organic Molecular Beam Deposition." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307144.

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Wang, Wei. "Plasmonic properties of subwavelength structures and plasmonic optical devices." Thesis, 2009. http://hdl.handle.net/2152/ETD-UT-2009-08-303.

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This thesis proposes a metallic hole array of a rectangular converging-diverging channel (RCDC) shape with extraordinary transmission. We use a three-dimensional (3D) finite element method to analyze the transmission characteristics of two-dimensional metallic hole arrays (2D-MHA) with RCDC. For a straight channel MHA, when the aperture size is reduced, the transmission peaks have a blue-shift. The same result is observed for a smaller gap throat for the RCDC structure. For the rectangular holes with a high length-width ratio, a similar blue-shift in the transmission peaks as well as a narrowe
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