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.
Results
Showing 1 to 20 of 62 for “"Optical Detection"”.
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Optimizing SCR design for optical detection
r greater than 5.2 [micrometer], and the active mask was recognized as an essential augmentation to all metal contacts in devices fabricated using CMOS technology.
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Optical Detection of Ultracold Neutral Calcium Plasmas
<p>We demonstrate an optical method to detect calcium ions in an ultracold plasma. We probe the plasma with a 397 nm laser beam tuned to a calcium ion transition. The probe laser beam is focused to a 160 µm waist allowing fine spatial resolution. Ions are detected by measuring fluorescence using a …
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The bio-optical detection of harmful algal blooms
… inverse reflectance algorithm designed for the detection of harmful algal blooms. The adopted framework focuses on establishing quantitative relationships between optically important algal intracellular properties and inherent optical properties (IOPs), such as the absorption and backscattering …
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Optical detection and analysis of Pictor A's jet
… 1.90 long, with interesting variability, but an optical component was previously unknown. The discovered optical component is faint, and knot candidates must be teased out from a bright host galaxy. Using three broadband lters, we extract knot fluxes and upper-bounds on the ux for multiple knot …
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Optical detection development for the Hogan quantum holographic noise experiment
… We have assembled and tested a photodetection system to measure broadband phase correlation between two optical signals, to be used in the noise detection experiment. This included modifying and characterizing photodetectors and setting up a system to record the signal correlation …
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A New Nanosecond Gated Optical Detection System: Application to Spectrochemical Analysis
Made available in DSpace on 2014-12-13T20:09:36Z (GMT). No. of bitstreams: 1 7606751.pdf: 3265029 bytes, checksum: 81653f199b1a9cb21e5673b87d274f78 (MD5) Previous issue date: 1975
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Optical detection of finger pressure through utilization of nailbed color changes
This thesis presents the theory and design of a sensor that detects a when a finger is pressed by visually examining a user's fingernail coloration. Unlike other finger-based controllers that primarily depend on covering the finger pad, this method of sensing allows for accurate measurements …
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Microfluidic biochip for optical detection of sepsis biomarkers from whole blood samples
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Molecules and materials for the optical detection of explosives and toxic chemicals
Optical chemosensing, especially using amplifying fluorescent polymers, can allow for the highly sensitive and selective vapor-phase detection of both explosives and highly toxic chemicals, including chemical warfare agents. There are varieties of analyte targets, however, that remain challenging …
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Annexin A5-Conjugated Polymeric Micelles For Dual Spect and Optical Detection of Apoptosis
… and autoimmune diseases. Noninvasive detection of apoptosis may play an important role in the evaluation of disease states and response to therapeutic intervention for a variety of diseases. It is desirable to have an imaging method to accurately detect and monitor this process in …
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A System for Measuring Radiation Induced Chemical Products in Atmospheric Gases Using Optical Detection Methods
… This is followed by a description of the optical and vacuum systems that were available and the modifications required to integrate the optical system into the vacuum chamber to achieve the ability to optically monitor the ozone levels in a controlled atmosphere. Both the ringdown data …
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The Thermal Decomposition of Nitrous-Oxide as Studied in a Shock Tube by Optical Detection Methods
Made available in DSpace on 2014-12-10T23:01:09Z (GMT). No. of bitstreams: 1 7121098.pdf: 8034655 bytes, checksum: 4003f33776118c9a06062c67fb3a485b (MD5) Previous issue date: 1971
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Application of Optical Detection Methods for Top-of-Rail (TOR) Lubricity Evaluation on a Moving Platform for Revenue Service Track
This research serves to evaluate the ability of optical detection techniques to ascertain the lubricity of revenue service track from a moving platform for railroad applications. A literature review is presented that covers the rail vehicle dynamics that drive the need of Top-of-Rail lubrication …
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Chemical and biological modification of porous silicon photonic crystals.
… fabrication, high quality optics and a sensitive optical response to changes in efractive index. A major impediment to using PSi materials as sensors is the relative instability of the silicon surface to oxidation in ambient air and aqueous environments. This thesis reports methods for …
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Integrated microlenses and multimode interference devices for microflow cytometers
… by µflow cytometry.<br/><br/>Several promising optical detection methods are still in their infancy in terms of integration on to a single chip and improvements can be made to existing integrated methods. Manipulation of a free optical beam in microfluidic channels is identified as a major need …
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Split Ring Resonator (SRR) based metamaterials
… response is required at the near infrared and optical wavelengths. In this thesis the various properties of the nanoscale SRRs are studied that resonates in the infrared and visible spectrum. The SRRs mentioned in this thesis are made of both aluminium and gold and have been fabricated on …
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Liquid Argon scintillation light quenching due to Nitrogen impurities : measurements performed for the MicroBooNE vertical slice test
… output of MicroBooNE, a smaller version of its optical detection system has been implemented. To demonstrate full operability of this prototype, two physics measurements were performed. The first examines the number of scintillation light components, for although theory explains two components, …
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Semiconductor Laser Device-Level Characteristics
… lasers are highly desirable in cost-effective optical communication systems. Developing the experimental setups to extract the characteristics of the semiconductor lasers is vital to the future of the optical research projects. In this thesis, integrated experimental setup designs have been …
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Solid-state cavity quantum electrodynamics with spin ensembles
… times. Despite these strengths, traditional optical detection methods exhibit low readout fidelity in solid-state ensembles, severely limiting their achievable sensitivity. This thesis addresses this limitation by coupling a solid-state emitter ensemble to a microwave cavity, forming a cavity …
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