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| Release | : 2014 |
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| Release | : 2012 |
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| Author | : Jimin Yao |
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| Release | : 2010 |
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Surface plasmons, due to their extreme sensitivity to changes in refractive index occurring at a metal/dielectric interface and their ability to significantly enhance electromagnetic fields near a metal, offer exciting opportunities for real-time, fully label free forms of chemical/biological detection and field-enhanced applications including surface enhanced Raman scattering (SERS), and photovoltaics. Novel classes of plasmonic crystals fabricated with precisely controlled arrays of subwavelength metal nanostructures provide a promising platform for the sensing and imaging of surface binding events with micrometer spatial resolution over large areas. Soft lithography, one family of unconventional nanofabrication methods, provides a robust, cost-effective route for generating highly uniform, functional nanostructures over large areas with molecular scale resolution. This dissertation describes the development and utility of several classes of functional, nanostructured plasmonic materials with predictable optical properties. A novel, low-cost optical sensor with atomic scale sensitivity at visible wavelength range was developed by tuning the optical response of a plasmonic crystal to visible wavelengths through optimization of the distribution and thickness of the thin metal film. Sensing and imaging of various surface binding events were studied to demonstrate their utility for label-free detection. Finite-Difference Time-Domain (FDTD) calculations were carried out to model the optical response of the system and gain insight into the physics of the system. New classes of plasmonic crystals were developed using new materials and fabrication methods, in concert with rational design of the device form factor guided by both experiment and computational electrodynamics simulations.
| Author | : G. Shvets |
| Publisher | : World Scientific |
| Total Pages | : 469 |
| Release | : 2012 |
| Genre | : Science |
| ISBN | : 9814355283 |
Manipulation of plasmonics from nano to micro scale. 1. Introduction. 2. Form-Birefringent metal and its plasmonic anisotropy. 3. Plasmonic photonic crystal. 4. Fourier plasmonics. 5. Nanoscale optical field localization. 6. Conclusions and outlook -- 11. Dielectric-loaded plasmonic waveguide components. 1. Introduction. 2. Design of waveguide dimensions. 3. Sample preparation and near-field characterization. 4. Excitation and propagation of guided modes. 5. Waveguide bends and splitters. 6. Coupling between waveguides. 7. Waveguide-ring resonators. 8. Bragg gratings. 9. Discussion-- 12. Manipulating nanoparticles and enhancing spectroscopy with surface plasmons. 1. Introduction. 2. Propulsion of gold nanoparticles with surface plasmon polaritons. 3. Double resonance substrates for surface-enhanced raman spectroscopy. 4. Conclusions and outlook -- 13. Analysis of light scattering by nanoobjects on a plane surface via discrete sources method. 1. Introduction. 2. Light scattering by a nanorod. 3. Light scattering by a nanoshell. 4. Summary -- 14. Computational techniques for plasmonic antennas and waveguides. 1. Introduction. 2. Time domain solvers. 3. Frequency domain solvers. 4. Plasmonic antennas. 5. Plasmonic waveguides. 6. Advanced structures. 7. Conclusions
| Author | : Cosmin Farcau |
| Publisher | : GRIN Verlag |
| Total Pages | : 154 |
| Release | : 2015-03-03 |
| Genre | : Science |
| ISBN | : 3656911215 |
Doctoral Thesis / Dissertation from the year 2008 in the subject Physics - Optics, Babeș-Bolyai Universit, language: English, abstract: Ordered plasmonic nanostructures are currently the subject of numerous scientific studies, due to their potential applications, from optical communications to chemical analyses and biomedicine. This thesis is focused on a special type of periodically ordered two-dimensional (2D) metallo-dielectric structure, noble metal films over microsphere arrays: from their fabrication and characterization, to spectroscopic applications. Prepared structures exhibit remarkable optical properties (including an unusually high transmittance, resembling the extraordinary optical transmission phenomenon), resulting from the excitation of surface plasmons. It is demonstrated that these plasmo-photonic structures are very promising multifunctional active-substrates for Surface Enhanced Raman Scattering, Metal Enhanced Fluorescence, and Surface Plasmon Resonance Spectroscopy. Chapter 1 is devoted to giving an overview of the interesting aspects related to the optical properties and applications of periodically structured metals and dielectrics. We also briefly describe some of the currently developed nanofabrication techniques. A few concepts, like the photonic band and surface plasmon are introduced, being useful for the discussions in the upcoming chapters. We pay a special attention to colloidal photonic crystal films and noble metal structures obtained by templating on two-dimensional colloidal crystals. Chapter 2 presents own experimental results concerning the preparation, characterization and lithographic applications of two-dimensional (2D) colloidal crystal films. Results of the optical properties investigations are presented in Chapter 3, and divided in two main categories: i) photonic properties of bare microsphere arrays, and ii) plasmonic properties of noble metal nanostructured films deposited over microsphere arrays. In Chapter 4 we explore the capabilities of noble metal coated microsphere arrays to improve the sensitivity of optical spectroscopic methods: Surface Enhanced Raman Scattering, Metal Enhanced Fluorescence, and Surface Plasmon Resonance Spectroscopy.
| Author | : Alexandre Dmitriev |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 394 |
| Release | : 2012-07-31 |
| Genre | : Science |
| ISBN | : 1461439337 |
This book is a compendium of the finest research in nanoplasmonic sensing done around the world in the last decade. It describes basic theoretical considerations of nanoplasmons in the dielectric environment, gives examples of the multitude of applications of nanoplasmonics in biomedical and chemical sensing, and provides an overview of future trends in optical and non-optical nanoplasmonic sensing. Specifically, readers are guided through both the fundamentals and the latest research in the two major fields nanoplasmonic sensing is applied to – bio- and chemo-sensing – then given the state-of-the-art recipes used in nanoplasmonic sensing research.
| Author | : Grégory Barbillon |
| Publisher | : MDPI |
| Total Pages | : 196 |
| Release | : 2019-06-05 |
| Genre | : Technology & Engineering |
| ISBN | : 3038979147 |
Plasmonics is a rapidly developing field that combines fundamental research and applications ranging from areas such as physics to engineering, chemistry, biology, medicine, food sciences, and the environmental sciences. Plasmonics appeared in the 1950s with the discovery of surface plasmon polaritons. Plasmonics then went through a novel propulsion in the mid-1970s, when surface-enhanced Raman scattering was discovered. Nevertheless, it is in this last decade that a very significant explosion of plasmonics and its applications has occurred. Thus, this book provides a snapshot of the current advances in these various areas of plasmonics and its applications, such as engineering, sensing, surface-enhanced fluorescence, catalysis, and photovoltaic devices.
| Author | : Wolfgang Fritzsche |
| Publisher | : John Wiley & Sons |
| Total Pages | : 208 |
| Release | : 2014-07-29 |
| Genre | : Technology & Engineering |
| ISBN | : 3527649700 |
Adopting a novel approach, this book provides a unique "molecular perspective" on plasmonics, concisely presenting the fundamentals and applications in a way suitable for beginners entering this hot field as well as for experienced researchers and practitioners. It begins by introducing readers to the optical effects that occur at the nanoscale and particularly their modification in the presence of biomolecules, followed by a concise yet thorough overview of the different methods for the actual fabrication of nanooptical materials. Further chapters address the relevant nanooptics, as well as the various approaches to combining nanostructures and biomolecules to achieve certain desired functionalities for applications in the fields of probing, sensing and particle manipulation. For analytical biologists, physical chemists, materials scientists and medicinal chemists.
| Author | : James Peter Dolas |
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| Release | : 2015 |
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| ISBN | : 9781339230863 |
Investigation of analysis methods of plasmonic crystals and metamaterials using traditional optical analysis, Planewave Expansion Method, and multiphysics software was conducted. 1D and 2D plasmonic crystals were studied and simulated for field enhancement. The sub-diffraction superlens and anisotropic lenses based on metamaterials were studied and an anisotropic lens was designed through computation. Comparison to existing work was made for evaluation of use in sub-diffraction limit nano-lithography. Investigation of manufacturing methods for thin-film-based plasmonic materials was carried-out. Ultra-flat metal methods involving template-stripping were used for superior surface performance key in plasmonic applications. Template-stripping through metal diffusion bonding and adhesive bonding were investigated, discussed, and employed with patterned ultra-flat metal films.
| Author | : Taylor Levi Mabe |
| Publisher | : |
| Total Pages | : 188 |
| Release | : 2018 |
| Genre | : Biosensors |
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"The research presented in this dissertation is interdisciplinary in nature. It covers the areas of micro- and nanofabrication, chemistry, materials science, and biological sensing. The running theme of the dissertation is the fabrication of micro- and nanostructures for use in plasmonic devices to aid in the optical detection of biomolecules. Phase I of the research focused on a bimetallic nanostructured (nanoslit) film to aid in improving the sensitivity in comparison to pure gold films. Phase II of the research investigated nanoledge structures (stair-step features) for their ability to trap biomolecules and aid in surface plasmon resonance sensing. Phase III of the research examined how to produce a fluidic dam, a microstructure with an overcut sidewall profile, which could aid in separating biological entities from the proteins of interest. Phase IV of the research assessed the use of the fluidic dam and nanoledge structures for detection of Troponin T, a biomarker used in the diagnosis of heart attacks. Phase V of the research focused on the design and microfabrication of a plasmonic device, which could study how surface plasmon resonance influences a photocurrent generated by immobilizing photosystem I in a nanoslit structure."--Abstract from author supplied metadata.
