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 13 of 13 for “"refractive index sensing"”.
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Engineered Plasmonic Nanostructures for Infrared Spectroscopy, Refractive Index Sensing and Nonlinear Optics
… environment of the nanoscale system, mainly for sensing applications. The intense and localized field, generated by two adjacent metallic nanostructures when appropriately illuminated, has been utilized for enhancing the sensitivity of vibrational spectroscopy. The near-field enhancement is also …
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Large area plasmonic nanostructures design, fabrication and characterization by laser
… promising applications, of which plasmonic sensing is a prime example. However, the development of practical, low-cost nanoscale manufacturing tools and processes capable of realizing these advanced applications is still one of the greatest challenges. Therefore, this thesis aims to design …
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Development of label-free colorimetric plasmonic sensor for biomedical applications
… measurement of such markers. Colorimetric sensing, a method that enables the detection of target analytes via ‘color change’, lays the foundation of a user-friendly, economical and most of all, it’s accessibility to draw inference for the detection of notorious critical conditions such as, …
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Development of three-dimensional (3D) grayscale Photolithography process for microfluidic curvature Structures
… of 3D microstructures in fiber optic-based refractive index sensor, PDMS surface wettability modification and passive micromixers. The fabrication of fiber optic- based refractive index sensor has been improved by providing a 3D microfluidic environment to help float the fiber optic inside …
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Plasmonic Surface Modifications with Hard-Core/Soft-Shell Nanoparticles
… on surfaces. This makes them interesting for sensing applications, for instance surface enhanced Raman spectroscopy (SERS) and refractive index sensing or other applications like wave guiding, light harvesting in photovoltaic or monitoring catalysis. The soft polymeric …
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Concentric Microresonators Design For Dispersion Engineering and Scalable Electron-Beam Lithography for Si and SiN Photonic Platforms
… optical filtering and subwavelength gratings for refractive-index sensing were fabricated and experimentally validated. A second lithography process was developed for a 300 nm SiN platform, employing a tunable negative-resist system that supports diverse device geometries. Using this process, an …
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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
… for surface plasmon resonance to be used as a refractive index sensor (allowing for diagnostics and kinetics studies). Surface plasmon resonance is also associated with a highly localized electric field, which can be used to enhance many spectroscopic techniques like infrared absorption, …
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Plasmonic Optical Sensors: Performance Analysis and Engineering Towards Biosensing
Surface plasmon resonance (SPR) sensing for quantitative analysis of chemical reactions and biological interactions has become one of the most promising applications of plasmonics. This thesis focuses on performance analysis for plasmonic sensors and implementation of plamonic optical sensors with …
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Refractometry Studies of the Optical Properties of Polymer Films and the Development of Polymer Coated Refractive Index Sensors
… for protecting ecosystems and human health. Refractive index sensing is a non-selective technique that can be used to measure almost any analyte. Miniaturized refractive index sensors, such as silicon-on-insulator (SOI) microring resonators are one possible platform, but require coatings …
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Multiwavelength Surface Plasmon Resonance Sensor Designs for Chemical and Biochemical Detection
… 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, the multiwavelength approach is novel and brings new …
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Multimaterial multifunctional fibers for biomedical applications
… fields of neural interfacing and bioimpedance sensing. Understanding the cytoarchitecture and wiring of the brain requires improved methods to record and stimulate large groups of neurons with cellular specificity. This requires the development of improved miniaturized neural interfaces that …
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Nanoplasmonics and silicon nanophotonics devices for sensing applications
… global security to healthcare and environmental sensing. This thesis studies silicon-based nanophotonics and noble metal based nanoplasmonics devices, and explores their utilities for energy, sensing, and photonics applications. Three dimensional (3D) sub-wavelength tapered periodic hole array …
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Fabrication, design, and analytical applications of nanostructured plasmonic crystals
… fully label-free form of chemical/biological sensing and imaging or for field-enhanced applications of electronics and photovoltaics. Soft nanoimprint lithography provides inexpensive and versatile replication method to generate uniformly ordered and defined nanostructures over large areas. …