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 12 of 12 for “"plasmonic sensors"”.
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Fabrication Techniques and Modeling for Unusual Optical Systems: Near Field Phase Shift Lithography and Plasmonic Sensors
… topic involved exploring the field of nano-plasmonics, with a strong emphasis on sensing applications. Until recently, the development of this field has suffered from difficulties and high cost associated to the production of high quality samples. Soft lithographic techniques, including …
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Plasmonic Optical Sensors: Performance Analysis and Engineering Towards Biosensing
… 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 novel nanofabrication techniques. A universal performance analysis model is established for general two-dimensional …
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Narrowband Photodetection in the Short-wavelength Infrared with a Plasmon-induced Hot Electron Device
… This approach opens up the possibility of plasmonic sensors with direct electrical readout, such as an on-chip surface plasmon resonance detector driven at a single wavelength.
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PLASMONIC NANOPARTICLES AS VERSATILE NANORULERS FOR SENSING APPLICATIONS: DEVELOPING THE NANOPARTICLE-ON-MIRROR ARCHITECTURE
The basis of plasmonic sensors is the resonant coupling between the oscillations of free electrons, called plasmons, and incident visible light waves. By confining these oscillations within a nanostructure, the coupling efficiency is enhanced by the creation of localized surface plasmon resonant …
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Detectivity vs. Sensitivity: Non-Hermitian Metasurface Sensor
… the probe is limited in its power budget, as in sensors on mobile platforms, high sensitivity does not guarantee high detectivity. Here, we demonstrate the trade-off between the detectivity and sensitivity of a plasmonic sensor. Plasmonic sensors are popular for their high sensitivity arising …
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Development of nanoplasmonic devices for biosensing applications
… for the chosen target. Optical micro- and nanosensors have incredible potential for early stage detection of cancer biomarkers in human serum samples for applications such as treatment monitoring and recurrence diagnosis due to their reliability for measuring protein-protein interactions. …
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Silica Microspheres Functionalized with Self-assembled Nanomaterials
… is the lack of functionalities such as gain, plasmonic resonance, and second-order nonlinearity. Silica possesses third order nonlinearity but cannot produce second order nonlinearity, plasmonic resonances, or fluorescence emission. The key to overcome this deficiency is to develop versatile …
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Optical Sensors for High-Temperature Pressure Measurement and Real-Time Particle Detection
… report the development of two types of optical sensors, one for high temperature pressure measurements and the other for real-time particle detection. With a high melting temperature (over 2000°C), low optical loss, and excellent corrosion resistance, sapphire (α-Al₂O₃) is ideal for high …
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Sensing and Imaging Biomolecules with Plasmonic Nanoparticle Assemblies Coupled with Darkfield Microscopy
… for color-based analysis and color-coding of the plasmonic sensors. Lastly, Chapter 5 outlines the development of a multiplexed assay using the nanoparticle assemblies. Two types of assemblies, targeting either ATP or a nucleic acid (DNA-210), were fabricated with different DNA linkers in the same …
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Plasmonic Paper as a Novel Chem/Bio Detection Platform
… sensitive and label-free chemical & biological sensors.</p><p>Most of the SERS/LSPR sensors demonstrated so far rely on rigid planar substrates (e.g., glass, silicon) owing to the well-established lithographic approaches, which are routinely employed for either fabrication or assembly of …
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Mapping plasmon excitations in gold nanostructures using electron energy loss spectroscopy
In this work we present the plasmonic properties of simulated and fabricated Au nanostructures using an electron beam as a source of excitation. The motivation for the this work comes from the applications of these nanostructures and the need to understand the physics behind them. We introduce the …
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Transformations in inorganic nanomaterials: role of defects, surfaces, and size
… level that the nature and strength of plasmonic coupling within the resulting assembly is strongly dependent on the site of attachment of the nanosphere/s and the nanosphere size. In addition to the large, regio-selective polarizability of Au nanoplates, we also uncover a synergy in the …