| dc.identifier.uri | http://hdl.handle.net/11401/77452 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | ru | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Dissertation | |
| dcterms.abstract | Notwithstanding the existing superior qualities of fluorescence sensors and sensor systems, the field of fluorescence sensing technology is open for active exploration and inspires researchers to develop, using more sophisticated detection methods, faster, more compact, less expensive designs that would appeal to a wider circle of customers. In this dissertation, I report on the development of two excitation-emission fluorescent optoelectronic sensors. First, I present a functional prototype of a low-cost portable non-fiber optic oxygen sensor, based on fluorescence quenching. The prototype design benefits from the robustness of a non-fiber optic design configuration and the simplicity of a double-sided optical configuration. I detected experimentally and studied analytically the advantages of a sandwich-structured sensor element over a sensor element consisting of a single oxygen-sensitive film. Based on the study, I concluded that the dynamic range provided by a sandwich-structured sensor element exceeds that of a single-film sensor element, on condition that the thickness of all sensing films in both sensor elements is equal. As for the sensitivity of a sandwich-structured sensor element, it exceeds that of a single-film sensing element if the sensing films of the former are thinner. To minimize the number of employed electronic components and avoid using sophisticated and expensive instruments, while designing our prototype, I employed an intensity-based measuring technique. I suggested a Stern-Volmer equation modification so that the user could avoid calibrating the designed prototype, to determine oxygen concentration at different temperatures. My analytical model led to the development of a novel optical design configuration for sensors, based on fluorescence quenching, and also demonstrated the configuration superiority in sensitivity over its analogs. My second design presented in this dissertation is a functional prototype of a novel fluorimeter, where a set of individually controlled laser diodes (LDs) is used as excitation light sources. The fluorimeter’s performance is evaluated by authenticating protected objects. To authenticate objects marked with fluorescent materials, I proposed a method, based on the analysis of excitation-emission matrices (EEMs) representing security markers, which helps avoid authentication errors, improves the speed of information processing due to the introduced digitized EEMs, basis EEMs, and basis markers. I also presented a conceptual design of a multidimensional fluorimeter, based on the designed prototype. Due to the capability of the new fluorimeter to control LDs individually, it can be used to scan not only excitation and emission wavelengths, but also the optical power density and modulation frequency of excitation light. The suggested conceptual design enables the acquisition of 3D spectra, which provide more detailed information about molecules in a single measurement, due to the employment of an excitation light modulation technique and a multi-channel photomultiplier tube. The multidimensional fluorimeter opens up new opportunities for investigating unique fluorescence properties of UC materials by analyzing multidimensional fluorescence spectra. | |
| dcterms.abstract | Notwithstanding the existing superior qualities of fluorescence sensors and sensor systems, the field of fluorescence sensing technology is open for active exploration and inspires researchers to develop, using more sophisticated detection methods, faster, more compact, less expensive designs that would appeal to a wider circle of customers. In this dissertation, I report on the development of two excitation-emission fluorescent optoelectronic sensors. First, I present a functional prototype of a low-cost portable non-fiber optic oxygen sensor, based on fluorescence quenching. The prototype design benefits from the robustness of a non-fiber optic design configuration and the simplicity of a double-sided optical configuration. I detected experimentally and studied analytically the advantages of a sandwich-structured sensor element over a sensor element consisting of a single oxygen-sensitive film. Based on the study, I concluded that the dynamic range provided by a sandwich-structured sensor element exceeds that of a single-film sensor element, on condition that the thickness of all sensing films in both sensor elements is equal. As for the sensitivity of a sandwich-structured sensor element, it exceeds that of a single-film sensing element if the sensing films of the former are thinner. To minimize the number of employed electronic components and avoid using sophisticated and expensive instruments, while designing our prototype, I employed an intensity-based measuring technique. I suggested a Stern-Volmer equation modification so that the user could avoid calibrating the designed prototype, to determine oxygen concentration at different temperatures. My analytical model led to the development of a novel optical design configuration for sensors, based on fluorescence quenching, and also demonstrated the configuration superiority in sensitivity over its analogs. My second design presented in this dissertation is a functional prototype of a novel fluorimeter, where a set of individually controlled laser diodes (LDs) is used as excitation light sources. The fluorimeter’s performance is evaluated by authenticating protected objects. To authenticate objects marked with fluorescent materials, I proposed a method, based on the analysis of excitation-emission matrices (EEMs) representing security markers, which helps avoid authentication errors, improves the speed of information processing due to the introduced digitized EEMs, basis EEMs, and basis markers. I also presented a conceptual design of a multidimensional fluorimeter, based on the designed prototype. Due to the capability of the new fluorimeter to control LDs individually, it can be used to scan not only excitation and emission wavelengths, but also the optical power density and modulation frequency of excitation light. The suggested conceptual design enables the acquisition of 3D spectra, which provide more detailed information about molecules in a single measurement, due to the employment of an excitation light modulation technique and a multi-channel photomultiplier tube. The multidimensional fluorimeter opens up new opportunities for investigating unique fluorescence properties of UC materials by analyzing multidimensional fluorescence spectra. | |
| dcterms.available | 2017-09-20T16:52:43Z | |
| dcterms.contributor | Gouzman, Michael | en_US |
| dcterms.contributor | Stanaćević, Milutin | en_US |
| dcterms.contributor | Shterengas, Leon | en_US |
| dcterms.contributor | Westerfeld, David | en_US |
| dcterms.contributor | Tkachuk, Michael. | en_US |
| dcterms.creator | Borodin, Anatoliy | |
| dcterms.dateAccepted | 2017-09-20T16:52:43Z | |
| dcterms.dateSubmitted | 2017-09-20T16:52:43Z | |
| dcterms.description | Department of Electrical Engineering. | en_US |
| dcterms.extent | 122 pg. | en_US |
| dcterms.format | Monograph | |
| dcterms.format | Application/PDF | en_US |
| dcterms.identifier | http://hdl.handle.net/11401/77452 | |
| dcterms.issued | 2015-05-01 | |
| dcterms.language | ru | |
| dcterms.provenance | Made available in DSpace on 2017-09-20T16:52:43Z (GMT). No. of bitstreams: 1
Borodin_grad.sunysb_0771E_12396.pdf: 5822749 bytes, checksum: 567df331cfe6b0002957c9a01996a6f2 (MD5)
Previous issue date: 2015 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | Engineering | |
| dcterms.title | Emission-Excitation Fruorescent Optoelectronic Sensors | |
| dcterms.type | Dissertation | |
