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Dissertations / Theses on the topic 'Plasmonic wave'

Author: Grafiati
Published: 11 October 2021
Last updated: 18 July 2025

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1

Kuriakose, Tintu. "Demonstration of the spatial self-trapping of a plasmonic wave." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD029/document.

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Cette thèse est une contribution au domaine de recherche de la plasmonique nonlinéaire, domaine émergent de l'optique. L'objectif principal est de démontrer expérimentalement l'autofocalisation d'une onde plasmonique.L'étude débute avec la fabrication et la caractérisation de guides plans en verre de chalcogénure de composition Ge-Sb-Se. Une technique basée sur la formation de solitons spatiaux est développée afin d’estimer leurs non-linéarités Kerr. Les propriétés optiques linéaires et non linéaires de ces guides sont étudiées aux longueurs d’onde de 1200 nm et 1550 nm.Des structures plasmoni
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2

Cetnar, John. "Full Wave Electromagnetic Simulations of Terahertz Wire Grid Polarizers and Infrared Plasmonic Wire Gratings." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1398356024.

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3

Bhardwaj, Shubhendu. "Hybrid Numerical Models for Fast Design of Terahertz Plasmonic Devices." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500336630858748.

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4

Xiang, Hengyang. "Colloidal nanocrystals applied for short-wave infrared photodetectors with fast response." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS423.

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L'infrarouge à ondes courtes (SWIR) désigne généralement les photons dans la plage de longueurs d'onde allant de 1 à 3 micromètres. Les applications dans cette fenêtre de longueur d'onde exploitent divers avantages tels qu’une grande longueur de pénétration dans le tissu biologique, la couverture spectrale pour la vision nocturne atmosphérique et l'énergie d'excitation caractéristique de certains modes de vibration moléculaire. Les photodétecteurs SWIR sont donc les composants technologiques essentiels pour la communication optique, la détection de gaz dans l’environnement, le biodiagnostic et
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5

Huda, Gazi Mostafa. "Modification of Plasmonic Nano Structures' Absorption and Scattering Under Evanescent Wave Illumination Above Optical Waveguides or With the Presence of Different Material Nano Scale Atomic Force Microscope Tips." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/43.

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The interaction of an evanescent wave and plasmonic nanostructures are simulated in Finite Element Method. Specifically, the optical absorption cross section (Cabs) of a silver nanoparticle (AgNP) and a gold nanoparticle (AuNP) in the presence of metallic (gold) and dielectric (silicon) atomic force microscope (AFM) probes are numerically calculated in COMSOL. The system was illuminated by a transverse magnetic polarized, total internally reflected (TIR) waves or propagating surface plasmon (SP) wave. Both material nanoscale probes localize and enhance the field between the apex of the tip and
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6

Song, Mingxia. "Surface plasmon propagation in metal nanowires." Thesis, Dijon, 2012. http://www.theses.fr/2012DIJOS053/document.

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Pas de résumé en français<br>Plasmonic circuitry is considered as a promising solution-effectivetechnology for miniaturizing and integrating the next generation ofoptical nano-devices. The realization of a practical plasmonic circuitry strongly depends on the complete understanding of the propagation properties of two key elements: surface plasmons and electrons. The critical part constituting the plasmonic circuitry is a waveguide which can sustain the two information-carriers simultaneously. Therefore, we present in this thesis the investigations on the propagation of surface plasmons and th
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7

Hossain, A. N. M. Shahriyar. "Metamaterials: 3-D Homogenization and Dynamic Beam Steering." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574430585435814.

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8

Song, Mingxia. "Propagation des plasmons de surface dans des nanofils métalliques." Phd thesis, Université de Bourgogne, 2012. http://tel.archives-ouvertes.fr/tel-00842236.

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Plasmonic circuitry is considered as a promising solution-effectivetechnology for miniaturizing and integrating the next generation ofoptical nano-devices. The realization of a practical plasmonic circuitry strongly depends on the complete understanding of the propagation properties of two key elements: surface plasmons and electrons. The critical part constituting the plasmonic circuitry is a waveguide which can sustain the two information-carriers simultaneously. Therefore, we present in this thesis the investigations on the propagation of surface plasmons and the co-propagation of surface p
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9

Nagaraj, Nagaraj. "Effects of Dissipation on Propagation of Surface Electromagnetic and Acoustic Waves." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115126/.

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With the recent emergence of the field of metamaterials, the study of subwavelength propagation of plane waves and the dissipation of their energy either in the form of Joule losses in the case of electomagnetic waves or in the form of viscous dissipation in the case of acoustic waves in different interfaced media assumes great importance. with this motivation, I have worked on problems in two different areas, viz., plasmonics and surface acoustics. the first part (chapters 2 & 3) of the dissertation deals with the emerging field of plasmonics. Researchers have come up with various designs in
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10

Yoosefi, Oraman. "Simulation and design of all-optical logic gates based on photonic crystals." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672369.

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In this thesis, design and simulation of optical logic gases based on different photonics crystals presented to used in the electronics and telecommunication industries. Optical devices perform faster with higher efficiencies compare to the electrical device.The photonic crystal applications to achieve higher transmission power and contrast ratio focus on the design criteria. Results proved promising insights toward the development of gas sensors. The proposed structures have small dimensions as well as a wide functional interval.In Chapter 1,before employing the wavelength-division multiplexi
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11

Prabhu, G. Radhakrishna. "Studies On Surface Plasmon Resonance And Related Experimental Methods Using Fixed Plasmon Angle." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/205.

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Surface plasmon waves are transverse magnetic electromagnetic waves propagating along a dielectric-metal interface. These waves can be excited by resonant absorption of electromagnetic radiation leading to surface plasmon resonance (SPR) at the interface. The resonance is characterised by a reduction in the intensity of the reflected light at the interface due to strong coupling of incident optical radiation to surface plasmons. This gives rise to a minimum at a sharply defined angle of incidence, referred to as SPR angle or plasmon angle. The phenomenon of SPR has been extensively used in the
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12

Prabhu, G. Radhakrishna. "Studies On Surface Plasmon Resonance And Related Experimental Methods Using Fixed Plasmon Angle." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/205.

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Surface plasmon waves are transverse magnetic electromagnetic waves propagating along a dielectric-metal interface. These waves can be excited by resonant absorption of electromagnetic radiation leading to surface plasmon resonance (SPR) at the interface. The resonance is characterised by a reduction in the intensity of the reflected light at the interface due to strong coupling of incident optical radiation to surface plasmons. This gives rise to a minimum at a sharply defined angle of incidence, referred to as SPR angle or plasmon angle. The phenomenon of SPR has been extensively used in the
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13

Yeung, Yan Mui Kitty. "Engineering Plasmonic Waves in Two-Dimensional Electron Systems." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17467363.

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Plasmonic waves are waves of mobile charge carriers caused by their collective oscillations. They can be excited in solid-state conducting materials and behave distinctively in different numbers of dimensions. With fabrication technologies available for solid-state materials, one can functionalize the dimensional properties by engineering the boundaries and interfaces of the plasmonic wave medium. For instance, plasmonic waves in two-dimensional (2D) conductors, such as semiconductor heterojunction and graphene, exhibit strong subwavelength confinement – with a wavelength about a factor of 100
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14

Renger, Jan. "Excitation, Interaction, and Scattering of Localized and Propagating Surface Polaritons." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1153478195966-65404.

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Surface polaritons, i.e., collective oscillations of the surface charges, strongly influence the optical response at the micro- and nanoscale and have to be accounted for in modern nanotechnology. Within this thesis, certain basic phenomena involving surface polaritons are investigated by means of the semianalytical multiple-multipole (MMP) method. The results are compared to experiments. In the first part, the surface plasmon resonance (SPR) of metal nanoparticles is analyzed. This resonant collective oscillation of the free electrons in a metallic nanoparticle leads to an enhancement and con
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15

Chen, Wenchen. "Metamaterials, Surface Waves, and Their Applications." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:103748.

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Thesis advisor: Willie J. Padilla<br>The field of metamaterials (MMs) has garnered a great deal of attention ever since the experimental demonstration of negative refractive indexes. Such an exotic response stemmed from the engineering capability of MMs, as they can obtain almost any optical responses at any given frequency by carefully structuring the geometries. There are countless examples where MMs have posed promising results in tailoring free space radiation. However, their usage beyond this common platform is far less explored. For examples, surface electromagnetic waves, which offer gr
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16

Fung, Kin-Hung. "Theoretical study of the plasmonic modes of metal nanoparticle arrays and their optical responses /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202008%20FUNG.

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17

Jung, Kyung Young. "Full-wave modeling and analysis of dispersion-engineered materials and plasmon waveguides." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218503761.

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18

STEIJN, KIRK WILLIAM. "COUPLING AND PROPAGATION OF SURFACE PLASMONS IN THE FAR-INFRARED (NEAR-MILLIMETER WAVES, SUB-MILLIMETER WAVES)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183973.

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This work describes a study of the propagation properties of a modified surface plasmon mode, and of the coupling properties of that mode using a grating coupler. The surface plasmon, a polariton involving coupling of electromagnetic waves to the plasma oscillations of a metal, is modified by the application of a dielectric overlayer to the interface between the metal and air. In the far infrared region of the electromagnetic spectrum, the overlayer causes dramatic changes in several properties of the mode, which can be verified by measuring the propagation length of the mode. Measurements at
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19

Marini, Andrea. "Theory of nonlinear and amplified surface plasmon polaritons." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.547873.

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This thesis presents a study of Surface Plasmon Polaritons (SPPs) in hybrid metal-dielectric waveguides. The embedding of metal in nanostructured photonic components allows for manipulating and guiding light at the subwavelength scale. Such an extreme confinement enhances the nonlinear response of the dielectric medium, which is important for applications in optical processing of information, but is paid in terms of considerable ohmic loss in the metal. It is, however, possible to embed externally pumped active inclusions in the dielectric in order to compensate for the metal loss. A novel per
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20

Huang, Shengnan Ph D. Massachusetts Institute of Technology. "Surface plasmon enhanced fluorescence for biological imaging : from visible to short-wave infrared." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129028.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2020<br>Cataloged from student-submitted PDF of thesis.<br>Includes bibliographical references (pages 139-147).<br>Fluorescence imaging offers high spatio-temporal resolution, low radiation dosage exposure, and low cost among all the available imaging modalities, for example, magnetic resonance imaging, computerized tomography and positron emission tomography. Imaging probes of high emissivity and photostability are the key to achieving fluorescence imaging with high signal-to-background rat
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21

Walasik, Wiktor. "Plasmon-soliton waves in metal-nonlinear dielectric planar structures." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/284234.

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In this PhD thesis, we study properties of stationary transverse magnetic polarized waves in structures built of a Kerr-type nonlinear dielectric layer, metal and linear dielectric layers. Although these waves, called here plasmon-solitons, have been studied for more than 30 years, there is still no experimental confirmation of their existence. The main reason being that, in all the configurations predicted so far, the nonlinear index modification required to observe plasmon-solitons corresponds to light intensities orders of magnitude higher than the damage threshold of typical nonlinear mate
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22

Tarlis, Aggelos. "Study of surface plasmon optical waves for sensing applications." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438617.

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23

Colson, Tobias A., and tobiascolson@gmail com. "Large Angle Plasmon Scattering in Metals and Ceramics." RMIT University. Applied Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090212.143048.

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This investigation is primarily concerned with the low loss, or plasmon region of an electron energy loss spectrum. Specifically, why these spectra have the shape and form that they do; what the significance of the material is in determining the shape and form of these spectra; what can be done with plasmon excited electrons; and how all of this fits in with the current theory of plasmon excitation. In particular, the concept of plasmon scattering being an energy transfer process of a coupled wave in the material is explored. This gives rise to slightly different explanations of the plas
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24

Venkata, Pradeep Kumar Garudadri. "SURFACE WAVE SCATTERING FROM METALLIC NANO PARTICLES: THEORETICAL FRAMEWORK AND NUMERICAL ANALYSIS." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukymeen2006t00408/Thesis%5FPGV%5FFinal%5Fn.pdf.

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Thesis (M.S.)--University of Kentucky, 2006.<br>Title from document title page (viewed on June 1, 2006). Document formatted into pages; contains ix, 94 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 91-93).
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25

Achlan, Moustafa. "Surface Plasmon Polariton and Wave Guide Modes in a Six Layer Thin Film Stack." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS109.

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Dans cette thèse, nous étudions les propriétés optiques d'un système multicouche (air-Au-SiO₂-Au-Ti-verre). Les interfaces sont planes et la modélisation est réalisée en utilisant les coefficients de Fresnel à l'interface et la propagation d'ondes planes dans les couches. Deux modèles sont utilisés où l'échantillon est : i) excité par une source à l'infini ; ii) excité par une source locale. Dans l'expérience que nous avons modélisée l'empilement est excité par les électrons tunnel inélastiques dans un microscope à effet tunnel (STM). Dans le modèle, le courant tunnel inélastique est remplacé
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26

HICKERNELL, ROBERT KERR. "NONLINEAR AND MAGNETO-OPTIC EFFECTS ON LONG-RANGE SURFACE PLASMON POLARITONS." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184145.

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The properties of surface plasmon polaritons which propagate in optically nonlinear or magnetic media are investigated. Expressions for the electromagnetic fields of a multilayer stack are derived by modification of the Fresnel reflection coefficients. Original research on prism-coupled, nonlinear, long-range surface plasmon polaritons, and on bound and prism-coupled, long-range surface magnetoplasmon polaritons in a transversely-applied magnetic field, is compared to previous research on single-interface plasmon polaritons. The reflectance from prism-coupled, nonlinear surface plasmons is ana
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27

Lourenço-Martins, Hugo. "Experiment and theory of plasmon coupling physics, wave effects and their study by electron spectroscopies." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS284/document.

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Les plasmons de surface (SP) sont des ondes électromagnétiques se propageant à l'interface entre deux milieux, typiquement un métal et un diélectrique. Les plasmons de surface ont la capacité de confiner le champ électromagnétique dans de très petite région de l’espace, typiquement quelques nanomètres, c’est à dire bien en dessous de la limite de diffraction de la lumière. Une conséquence de ce confinement sub-longueur d’onde de la lumière est que leur observation nécessite une résolution spatiale nanométrique - ce qui exclut l’utilisation de techniques optiques standard. Néanmoins, le microsc
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28

Jorgenson, Ralph Corleissen. "Surface plasmon resonance based bulk optic and fiber optic sensors /." Thesis, Connect to this title online; UW restricted, 1993. http://hdl.handle.net/1773/5996.

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29

Alshannaq, Shadi Sami. "Nonreciprocal Millimeter and Sub-Millimeter Wave Devices Based on Semiconductor Magnetoplasma." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313134612.

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30

Shinall, Brian Darnell. "Using surface plasmon resonance spectroscopy to characterize thin composite films." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/10157.

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31

Dheur, Marie-Christine. "Expériences de plasmonique quantique : dualité onde corpuscule du plasmon de surface et intrication entre un photon et un plasmon de surface." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLO004/document.

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Nous présentons deux expériences de plasmonique quantique, c’est-à-dire des expériencesd’optique quantique ayant pour support des plasmons de surface. Dans la première expérience, nous montrons la dualité onde-corpuscule d’un plasmon de surface unique (1) en utilisant la démarche de l’article de Philippe Grangier, Gérard Roger et Alain Aspect (2) sur les interférences à un photon unique. Dans la deuxième expérience, nous mettons en évidence les propriétés d’intrication entre un photon et un plasmon de surface. Nous produisons des photons intriqués en polarisation et les séparons spatialement<b
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32

Kim, Yang-Hyo. "High resolution imaging and lithography using interference of light and surface plasmon waves." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42303.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Includes bibliographical references (leaf 28).<br>The resolution of optical imaging and lithography is limited by the wave nature of light. Studies have been undertaken to overcome the diffraction limit for imaging and lithography. In our lab, the standing wave surface plasmon resonance fluorescence (SW-SPRF) microscopy was developed. It is a combination of standing wave total internal reflection fluorescence (SW-TIRF), one of structured illumination techniques, with surface plasmon resonance (SPR).
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33

Béland, Rémy. "Développement d'un biocapteur couplant la résonance des plasmons de surface et la microcalorimétrie pour le suivi des interactions moléculaires à l'interface liquide/solide." Thesis, Ecully, Ecole centrale de Lyon, 2013. http://www.theses.fr/2013ECDL0040/document.

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Dans un avenir proche, les dispositifs de détection médicaux miniaturisés en temps réels (lab-on-chip) seront au centre de la révolution des méthodes de diagnostics médicaux et d’identification des processus biologiques et cela, autant au niveau clinique qu’au niveau de la recherche. Pour y arriver, il est important de développer des chimies de surface stables et spécifiques, ce qui demande une compréhension des interactions intermoléculaires à l’interface liquide/solide. Pour bien comprendre ces interactions, il est important de développer des instruments adaptés à la mesure près de l’interfa
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34

Ye, Fan. "Surface plasmon polaritons along metal surfaces with novel structures." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:103747.

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Thesis advisor: Michael J. Naughton<br>Surface plasmon polaritons (SPPs) are hybridized quasiparticles of photons and electron density waves. They are confined to propagate along metal-dielectric interfaces, and decay exponentially along the direction perpendicular to the interfaces. In the past two decades, SPPs have drawn intensive attention and undergone rapid development due to their potential for application in a vast range of fields, including but not limited to subwavelength imaging, biochemical/biomedical sensing, enhanced light trapping for solar cells, and plasmonic logic gates. Thes
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35

Bozhko, Andrii. "Physical Boundary as a Source of Anomalies in Transport Processes in Acoustics and Electrodynamics." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404590/.

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Various anomalous effects that emerge when the interfaces between media are involved in sound-matter or light-matter interactions are studied. The three specific systems examined are a fluid channel between elastic metal plates, a linear chain of metallic perforated cylindrical shells in air, and a metal-dielectric slab with the interfaces treated as finite regions of smoothly changing material properties. The scattering of acoustic signals on the first two is predicted to be accompanied by the effects of redirection and splitting of sound. In the third system, which supports the propagation o
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36

Huda, Gazi Mostafa. "EFFECT OF A SILICON TIP ON ABSORPTION CROSS SECTION, FIELD ENHANCEMENT, AND LOCALIZED SURFACE PLASMON RESONANCE OF DIFFERENT SIZED GOLD NANOPARTICLES UNDER EVANESCENT WAVE ILLUMINATION." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_theses/114.

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We have numerically investigated the influence of a nanoscale silicon tip in proximity to an illuminated gold nanoparticle. We describe how the position of the high-permittivity tip and the size of a nanoparticle impact the absorption, peak electric field and surface plasmon resonance wavelength under different illumination conditions. We detail the finite element method (FEM) approach we have used for this, whereby we specify a volume excitation field analytically and calculate the difference between this source field and the total field (i.e., scattered-field formulation). We show that a nan
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37

Gacemi, Djamal Eddine. "Étude expérimentale et simulation des modes électromagnétiques se propageant sur des guides d’ondes métalliques de petites dimensions aux fréquences THz." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112413.

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Focaliser l’énergie optique en un petit spot de diamètre beaucoup plus petit que la limite de diffraction a longtemps été un sujet très intéressant en photonique. Dans le domaine Térahertz (avec une longueur d’onde de l’ordre de 300 µm) ce défi est particulièrement important pour répondre à l’intérêt croissant de l’imagerie haute résolution et de la spectroscopie des matériaux d’une taille inférieure à l’échelle submillimétrique de la longueur d’onde en espace libre. Dans ma thèse, j’ai étudié le confinement des ondes de surface aux fréquences THz sur des structures métalliques de dimensions s
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38

Parris, Joseph Steele. "Finite-Difference Time-Domain Modeling of Nickel Nanorods." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2707.

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Theoretical and experimental plasmonics is a growing field as a method to create near fields at sub-wavelength distances. In this thesis, a finite-difference time-domain method is used to simulate electromagnetic waves onto a thin film that present of nickel nanorods with sharp apexes. The absorbed, transmitted, and reflected fields were shown to depend linearly on silver film thickness and nanotip length. The electric field is visualized along the tip to show strong charge density along the base of the tip’s apex and how that density changes for wavelength, metal, and source tilt. Lastly, the
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39

Schuster, Roman. "Electron Energy-Loss Spectroscopy on Underdoped Cuprates and Transition-Metal Dichalcogenides." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-27333.

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Die vorliegende Arbeit befasst sich mit Elektronenenergieverlustspektroskopie an unterdotierten Kupratsupraleitern und Übergangsmetalldichalcogeniden. Nach einem kurzen Abriss über die der experimentellen Methode zugrundeliegenden theoretischen Tatsachen folgen zwei experimentelle Kapitel. Für das prototypische Kupratsystem Ca2-xNaxCuO2Cl2 wird für verschiedene Dotierungskonzentrationen zunächst die Entwicklung der Ladungstransferanregungen untersucht. Man findet eine substanzielle Umverteilung des spektralen Gewichtes, verbunden mit einem starken Einbruch der Dispersion dieser Anregungen. Bei
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40

König, Andreas. "Charge-Density Waves and Collective Dynamics in the Transition-Metal Dichalcogenides: An Electron Energy-Loss Study." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-126887.

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In this thesis, we present a detailed investigation of the electronic properties of particular transition-metal dichalcogenides. Applying electron-energy loss spectroscopy, the connection between the negative plasmon dispersion of tantalum diselenide and the occurrence of a charge-density wave state (CDW) in this compound as well as related materials is observed. Our studies include doping experiments with alkali metal addition altering the charge density of the compounds. This is known to suppress the CDW. We show that it further changes the plasmon dispersion from negative to positive slope.
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41

Ruan, Zhichao. "Dispersion Engineering : Negative Refraction and Designed Surface Plasmons in Periodic Structures." Doctoral thesis, Stockholm : Informations- och kommunikationsteknik, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4542.

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42

Wang, Mengjia. "Spin-orbit interactions for steering Bloch surface waves with the optical magnetic field and for locally controlling light polarization by swirling surface plasmons." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD013/document.

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Ma thèse est consacrée aux nouveaux phénomènes nano-optiques et aux dispositifs basés sur l'interaction spin-orbite de la lumière (SOI). Tout d'abord, il a été démontré un SOI uniquement piloté par le champ magnétique de la lumière permettant de diriger avec précision les ondes de surface de Bloch, offrant ainsi une nouvelle manifestation du champ magnétique optique. Ensuite, nous avons proposé et démontré le concept de nano-antenne plasmonique hélicoïdale à ondes progressives (TW-HPA), c’est-à-dire un fil hélicoïdal en or étroit alimenté optiquement par une nano-antenne dipolaire dans une con
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Yi, Jue-Min. "Diffraction of single holes through planar and nanostructured metal films." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-01018454.

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The theme of my thesis is to investigate the diffraction behavior of subwavelength holes in metal films, and to understand the surface plasmons' (SPs) role in aperture far-field diffraction. We have built a home-made goniometer setup with high-level quality. A series of single hole continuously ranging from k*r>>1 to k*r<
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Agostini, Matteo. "Surface-acoustic-wave based biosensors and microfluidic devices for Life-science applications." Doctoral thesis, Scuola Normale Superiore, 2018. http://hdl.handle.net/11384/85916.

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In 2015 over half of the total deaths worldwide were due to the top ten causes of mortality, as stated by the World Health Organization. Heart disease, cancer, and diabetes are particularly prominent, especially in developing countries. In the last decades a significant amount of effort has been made by the scientific community in order to address these pathologies, from both the screening and the treatment points of view. To date, early-detection seems to be one of the most effective strategies in reducing the mortality. By diagnosing one of these pathologies at very early stages, the surv
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Huynh, Dan-Nha. "Nonlinear optical phenomena within the discontinuous Galerkin time-domain method." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19396.

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Diese Arbeit befasst sich mit der theoretischen Beschreibung nichtlinearer optischer Phänomene in Hinblick auf das (numerische) unstetige Galerkin-Zeitraumverfahren. Insbesondere werden zwei Materialmodelle behandelt: das hydrodynamische Modell für Metalle und das Modell für Raman-aktive Materialien. Im ersten Teil der Arbeit wird das hydordynamische Modell für Metalle unter Verwendung eines störungstheoretischen Ansatzes behandelt. Insbesondere wird dieser Ansatz genutzt, um die nichtlinearen optischen Effekte, Erzeugung zweiter Harmonischer und Summenfrequenzerzeugung, mit Hilfe des unstetig
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STELLA, UGO. "Light manipulation in multilayered photonic structures." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2842499.

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Silva, Alexandre Manoel Pereira Alves da. "Estudo de uma lente plasmônica para acoplamento em nanoestruturas." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260808.

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Orientador: Hugo Enrique Hernandez Figueroa<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-19T08:38:08Z (GMT). No. of bitstreams: 1 Silva_AlexandreManoelPereiraAlvesda_D.pdf: 7013947 bytes, checksum: c23d3c786fbf204c86a3e94bd5da9bd2 (MD5) Previous issue date: 2011<br>Resumo: O projeto e o estudo de lentes plasmônicas operando nos comprimentos de onda de 650nm e 1550nm são, aqui, apresentados. Uma lente desse tipo permite que a luz proveniente de um guia de ondas micrométrico, por exemplo, uma fi
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Ung, Bora. "Study of the interaction of surface waves with a metallic nano-slit via the finite-difference time-domain method." Master's thesis, Québec : Université Laval, 2007. http://www.theses.ulaval.ca/2007/24879/24879.pdf.

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Lombard, Emmanuel. "Etude des caractéristiques d'un faisceau contrôlé en polarisation après transmission à travers différentes nanostructures." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00863310.

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Dans ce travail, nous avons étudié l'interaction entre une lumière contrôlée en polarisation et deux structures sub-longueurs d'onde gravées dans un film métallique opaque, en utilisant la méthode de la " matrice de Mueller ". Tout d'abord, nous avons montré qu'un réseau concentrique de fentes sub-longueurs d'onde percées à travers le film permet de filtrer et de convertir une polarisation incidente, ce qui génère une polarisation radiale. Nous avons aussi montré sa capacité à générer des faisceaux de Bessel non-diffractifs J0 ou J2 à travers de telles structures, et à contrôler leur hélicité
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Malheiros, Silveira Gilliard Nardel 1980. "Nanoantenas para acoplamento e comunicação entre dispositivos fotônicos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260816.

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Orientadores: Hugo Enrique Hernández Figueroa, Gustavo Silva Wiederhecker<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-26T11:40:14Z (GMT). No. of bitstreams: 1 MalheirosSilveira_GilliardNardel_D.pdf: 5160562 bytes, checksum: 33058c0e1fc01da7e9a2ea1ab88b0ad4 (MD5) Previous issue date: 2014<br>Resumo: Esta tese aborda o emprego de nano-antenas e antenas ópticas com configurações e materiais diversos, envolvendo atividades de modelagem e simulação. Tais propostas visam viabilizar novas soluções p
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