Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 399 for “"Surface plasmon"”.
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Particle-modified Surface Plasmon Resonance Biosensor
Surface plasmon resonance (SPR) biosensors have attracted great attention in scientific research in the past three decades. Extensive studies on the immobilisation of biorecognition elements have been conducted in pursuit of higher sensitivity, but trialled formats have focussed on a thin layer …
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Ultrasonic agitation for surface plasmon resonance biosensors
… and ability to yield a localised surface plasmon resonance, surface-based nanoparticles have gained popularity in various biosensing applications. In such configurations, fluid containing biological material such as proteins is injected into a static cell containing the sensing …
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Surface plasmon-coupled emission for applications in biomedical diagnostics
Surface plasmon-coupled emission (SPCE) is a phenomenon whereby the light emitted from a fluorescent molecule can couple into the surface plasmon of an adjacent metal layer resulting in highly directional emission in the region of the surface plasmon resonance (SPR) angle. As well as the high …
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Integrated optical surface plasmon resonance for electrochemically addressed layers
… the development of the first integrated optical surface plasmon resonance sensor that combines an optical and electrochemical interrogating technique in sensing electrochemically addressed layers over a gold film. This device brings together the advantages of the analytical technique of surface …
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Photochemical Tuning of Surface Plasmon Resonances in Metal Nanoparticles
… electron oscillations (so-called localized surface plasmons or LSPs) which facilitate concentrating light-matter interactions to length scales below the diffraction limit. Part I of this book describes two applications of this confinement effect. Firstly, the use of single particles as …
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Investigation of electroactive ultrathin films by surface plasmon spectroscopy
Surface plasmon spectroscopy was combined with electrochemistry and high pressure technique to investigate ultrathin electroactive polymer films. Firstly, the electropolymerization of 2, 2a??-bithiophene was investigated by electrochemical surface plasmon spectroscopy. The anion doping and dedoping …
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Exploration of grating-based surface plasmon resonance systems for wave vector matching to enhance plasmon modes and preliminary surface plasmon-enhanced fluorescence interrogation
<p>Surface plasmon resonance refers to the collective oscillation of conductance band electrons in a metal. The most common experimental method to excite surface plasmon resonance is with light through a coupling mode (prism, grating, waveguide, etc). The work presented in this thesis uses …
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Localized Surface Plasmon Resonance: Nanoscale Sensing for Processes at Interfaces
This PhD thesis reports the use the emerging surface-sensitive optical technique of localized surface plasmon resonance (LSPR) to characterize the interaction of relevant classes of biomolecules, e.g. peptides, proteins, lipids and DNA strands, at solid-liquid interfaces, with an emphasis on …
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Electrochemical impedance spectroscopy and surface plasmon resonance for diagnostic antibody detection
… is high. Evanescent field biosensing, e.g. Surface Plasmon Resonance (SPR), and electrochemical detection, in particular Electrochemical Impedance Spectroscopy (EIS), have been shown viable for detection of lower affinity antibodies, based on the principle that these technologies allow the …
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Creation of novel gold-nanorod-based localized surface plasmon resonance biosensors
Starting with a comprehensive review of both surface plasmon resonance (SPR) based and localized surface plasmon resonance (LSPR) based sensors, this thesis reports the studies on the development of a novel sensitive gold nanorod (GNR) based label-free LSPR optical fibre biosensor, and the …
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Multiwavelength Surface Plasmon Resonance Sensor Designs for Chemical and Biochemical Detection
Surface plasmon resonance (SPR) sensors using multiwavelength light coupling are investigated to probe changes in refractive index that occur as a result of chemical or biochemical processes. Traditional SPR sensors have used angle modulation to facilitate detection at the sensor surface; however, …
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Three-photon Absorption Process In Organic Dyes Enhanced By Surface Plasmon Resonance
… three-photon absorption processes by means of Surface Plasmon. We demonstrated an enhancement of the effective two- and three-photon absorption cross-section of an organic compound of 480 and 30 folds, respectively. We proved that the enhancement is a direct consequence of the electric field …
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Development of High Pressure Surface Plasmon Resonance for the Study of Biosystems
… shown that BIAcore(TM) SA chips maintain their surface binding functionality after pressure exposure and that effects to the surface are reversible to 6000 psi. Three test systems were chosen to be studied using this instrument, each having different characteristics; cytochrome c association to …
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Energy transfer between surface plasmon polariton modes with hybrid photorefractive liquid crystal cells
… significant photorefractive control of Surface Plasmon Polaritons (SPP). The photorefractive effects are generated through optically controlling the conductivity of a ~100nm photoconducting poly-N-vinyl-carboxyl (PVK) layer. Therefore, when a potential is applied across the cell, the …
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Investigations into Protein-Surface Interactions via Atomic Force Microscopy and Surface Plasmon Resonance
Protein surface interactions are important in many diverse applications. In this dissertation nonspecific and specific interactions of two proteins (fibrinogen and F1-ATP synthase) with a variety of surfaces have been investigated via atomic force microscopy and surface plasmon resonance. Chapter …
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Surface Plasmon Resonance Imaging Biosensors for Cancer Diagnosis: Detection of Circulating Tumor DNA
… doctoral thesis focused on the realization of Surface Plasmon Resonance Imaging (SPRI) biosensor for the rapid, simple and label-free detection of single point mutations in the KRAS gene, standard actionable cancer biomarkers for colorectal cancer, in human plasma samples. Initially, the SPRI …
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Surface plasmon polariton mediated energy transfer from external antennas into organic photovoltaic cells
… transferred into the photovoltaic cell via surface plasmon polariton modes in an interfacial thin silver contact. By decoupling the optical and electrical functions of the cell, this new architecture has the potential to circumvent the tradeoff between light absorption and charge separation …
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High resolution imaging and lithography using interference of light and surface plasmon waves
… 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). The …
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Surface plasmon enhanced fluorescence for biological imaging : from visible to short-wave infrared
… bright and stable imaging probes is through surface plasmon enhanced fluorescence. In the first part of the thesis, we develop a fluorescent probe with high site-specificity and emission efficiency by exploiting the targeting-specificity of M13 virus and co-assembling plasmonic nanoparticles …
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