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 319 for “"Plasmon Resonance"”.
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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 surface. …
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Light-induced torque at multipolar plasmon resonance
… of this interaction reaches maximum at optical resonance. By understanding and designing the electromagnetic resonance of nanostructures, we can manipulate the electromagnetic field distribution as desired, with the benefits of enhancing the field strength and squeezing the field spot to be …
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Integrated optical surface plasmon resonance for electrochemically addressed layers
… 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 plasmon …
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Localized Surface Plasmon Resonance: Nanoscale Sensing for Processes at Interfaces
… 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 deciphering kinetics and pathways of dynamic adsorption …
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Engineering the Plasmon Resonance of Gold Nanoshells for Biological Applications
… 104.5 nm core shell particles having a peak resonance at 940 nm were formed. The study also presents two new methods by which ‘textured’ nanoshells may be formed for use in applications such as substrates for Surface Enhanced Raman Spectroscopy. The thesis has also investigated the effect of …
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Electrochemical impedance spectroscopy and surface plasmon resonance for diagnostic antibody detection
… 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
… 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 development …
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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
… 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
Through an initial set of experiments high pressure SPR (HP-SPR) was used to measure changes in the reflectivity of various liquids under hydrostatic pressures ranging from ambient to 276 bar (4000 psi). The changes in refractive index as a function of increasing pressure for these solutions were …
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Investigations into Protein-Surface Interactions via Atomic Force Microscopy and Surface Plasmon Resonance
… via atomic force microscopy and surface plasmon resonance. Chapter one provides background information on protein surfaces interactions. Chapter 2 summarizes the techniques and surfaces utilized in the investigations in the following chapters. Chapter 3 provides background and …
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Surface Plasmon Resonance Imaging Biosensors for Cancer Diagnosis: Detection of Circulating Tumor DNA
… 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 assay …
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A chemical sensor based on surface plasmon resonance on surface modified optical fibers
… which utilizes the phenomenon of surface plasmon resonance to detect changes in refractive index of chemical or biochemical samples applied to a surface modified optical fiber. The sensor is constructed by polishing a short section of the lateral surface of an optical fiber to its …
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SURFACE PLASMON RESONANCE IMAGING BIOSENSORS FOR THE DETECTION OF PATHOGENS AND TOXINS IN FOOD
… particular, optical biosensors based on Surface Plasmon Resonance Imaging (SPRI) are attractive because they allow the sensitive detection of analytes from food matrices in real-time. SPRI can assays crude samples without purification and can exploits antibodies or single-stranded DNA (ssDNA) …
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Development of a plasmon resonance enhanced optical trap for characterisation of single metal nanoparticle
… an experimental method for constructing a plasmon resonance based gold nanorod trapping platform and suggest methods for characterizing a trapped single nanoparticle. While there are published methods that emphasize on building up an optical trapping setup or trap single gold nanorod using …
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Optical fibre surface plasmon resonance sensors based on a metallic array of sub-wavelength apertures
In this dissertation, optical fibre surface plasmon resonance sensors based on a metallic array of sub-wavelength apertures are investigated. Metallic sub-wavelength apertures may be designed to support surface plasmon resonances that are sensitive to the surrounding environment when embedded at …
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Real Time Biological Threat Agent Detection with a Surface Plasmon Resonance Equipped Unmanned Aerial Vehicle
… made UAV integration a feasible task. A Surface Plasmon Resonance (SPR) biosensor was integrated for the first time into a small UAV platform, allowing the UAV platform to collect and then quantify the concentration of an aerosolized biological agent in real-time. A sensor operator ran the SPR …
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