Дисертації з теми "Optical based sensor"
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Bronk, Karen Srour. "Imaging based sensor arrays /." Thesis, Connect to Dissertations & Theses @ Tufts University, 1996.
Знайти повний текст джерелаAdviser: David R. Walt. Submitted to the Dept. of Chemistry. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;
Andrews, Jeffrey Pratt. "Longitudinal misalignment based strain sensor." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/43283.
Повний текст джерелаA practical fiber optic strain sensor has been developed to measure strains in the range of 0.0 to 2.0 percent strain with a resolution ranging between 10 and 100 microstrain depending on sensor design choices. This intensity based sensor measures strain by monitoring strain induced longitudinal misalignment in a novel fiber interconnection. This interconnection is created by aligning fibers within a segment of hollow core fiber. Related splice loss mechanisms are investigated for their effect on resolution. The effect of gauge length and launch conditions are also investigated.
Master of Science
Chen, Qiao. "ESA based fiber optical humidity sensor." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/10134.
Повний текст джерелаMaster of Science
Miller, Mark S. "Optical fiber-based corrosion sensor systems." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-03042009-041455/.
Повний текст джерелаFan, Chenjun. "Fiber optic sensor based on dual ring resonator system /." Online version of thesis, 1992. http://hdl.handle.net/1850/11070.
Повний текст джерелаSun, Kailiang. "Fluorescence based optical sensor for protein detection." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2010r/ksun.pdf.
Повний текст джерелаMohamad, Mohd Fuad Bin. "Luminescence-based optical sensors towards in vivo analysis." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31215.
Повний текст джерелаRooney, James Michael. "Model based exploration of an optical sensor architecture." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620014.
Повний текст джерелаXiao, Hai. "Self-Calibrated Interferometric/Intensity-Based Fiber Optic Pressure Sensors." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/28845.
Повний текст джерелаPh. D.
Xu, Lina. "Optical fiber humidity sensor based on evanescent wave scattering." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07092004-112625/.
Повний текст джерелаQin, Zengguang. "Distributed Optical Fiber Vibration Sensor Based on Rayleigh Backscattering." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24105.
Повний текст джерелаGlomon, Lhusak. "Source based chromatic methodology for optical fibre sensor systems." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400231.
Повний текст джерелаRen, Meiqi. "Distributed Optical Fiber Vibration Sensor Based on Phase-Sensitive Optical Time Domain Reflectometry." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34400.
Повний текст джерелаChermak, Lounis. "Standalone and embedded stereo visual odometry based navigation solution." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/9319.
Повний текст джерелаTian, Xiaoyi. "Microwave Photonic Sensing Based on Optical Microresonators." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29545.
Повний текст джерелаWu, Nan. "Optical Frequency Domain Reflectometry Based Quasi-distributed High Temperature Sensor." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/76905.
Повний текст джерелаMaster of Science
Wu, Chujun. "Silicon-on-insulator based optical microring resonator sensor and improvement methods." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/19894.
Повний текст джерелаDey, Sanjoy Namuduri Kameswara. "Performance analysis of CCR based distributed sensor network based on optical wireless communication." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2007.
Повний текст джерелаCopyright 2008 by Sanjoy Dey. All Rights Reserved. Includes bibliographical references (leaves 16-18).
Xue, Ruipeng. "Nanofiber Based Optical Sensors for Oxygen Determination." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405508835.
Повний текст джерелаMcConney, Michael Edward. "Learning and applying material-based sensing lessons from nature." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29749.
Повний текст джерелаCommittee Chair: Tsukruk, Vladimir; Committee Member: Shofner, Meisha; Committee Member: Srinivasarao, Mohan; Committee Member: Thio, Yonathan; Committee Member: Weissburg, Marc. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Garcia, Marisol. "TRULY NON INVASIVE GLUCOSE OPTICAL SENSOR BASED ON METAL NANOPARTICLES GENERATION." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2260.
Повний текст джерелаM.S.
Department of Chemistry
Arts and Sciences
Industrial Chemistry
Bang, Hyungseok. "INTEGRATED OPTICAL SPR (SURFACE PLASMON RESONANCE) SENSOR BASED ON OPTOELECTRONIC PLATFORM." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3289.
Повний текст джерелаPh.D.
Optics and Photonics
Optics and Photonics
Optics PhD
Aspey, Robin Andrew. "A wavelength encoded optical current sensor based on chromatic modulation techniques." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399286.
Повний текст джерелаAsebedo, Antonio Ray. "Development of sensor-based nitrogen recommendation algorithms for cereal crops." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/19229.
Повний текст джерелаDepartment of Agronomy
David B. Mengel
Nitrogen (N) management is one of the most recognizable components of farming both within and outside the world of agriculture. Interest over the past decade has greatly increased in improving N management systems in corn (Zea mays) and winter wheat (Triticum aestivum) to have high NUE, high yield, and be environmentally sustainable. Nine winter wheat experiments were conducted across seven locations from 2011 through 2013. The objectives of this study were to evaluate the impacts of fall-winter, Feekes 4, Feekes 7, and Feekes 9 N applications on winter wheat grain yield, grain protein, and total grain N uptake. Nitrogen treatments were applied as single or split applications in the fall-winter, and top-dressed in the spring at Feekes 4, Feekes 7, and Feekes 9 with applied N rates ranging from 0 to 134 kg ha[superscript]-1. Results indicate that Feekes 7 and 9 N applications provide more optimal combinations of grain yield, grain protein levels, and fertilizer N recovered in the grain when compared to comparable rates of N applied in the fall-winter or at Feekes 4. Winter wheat N management studies from 2006 through 2013 were utilized to develop sensor-based N recommendation algorithms for winter wheat in Kansas. Algorithm RosieKat v.2.6 was designed for multiple N application strategies and utilized N reference strips for establishing N response potential. Algorithm NRS v1.5 addressed single top-dress N applications and does not require a N reference strip. In 2013, field validations of both algorithms were conducted at eight locations across Kansas. Results show algorithm RK v2.6 consistently provided highly efficient N recommendations for improving NUE, while achieving high grain yield and grain protein. Without the use of the N reference strip, NRS v1.5 performed statistically equal to the KSU soil test N recommendation in regards to grain yield but with lower applied N rates. Six corn N fertigation experiments were conducted at KSU irrigated experiment fields from 2012 through 2014 to evaluate the previously developed KSU sensor-based N recommendation algorithm in corn N fertigation systems. Results indicate that the current KSU corn algorithm was effective at achieving high yields, but has the tendency to overestimate N requirements. To optimize sensor-based N recommendations for N fertigation systems, algorithms must be specifically designed for these systems to take advantage of their full capabilities, thus allowing implementation of high NUE N management systems.
Nirmaier, Thomas. "A CMOS-based Hartmann-Shack sensor for real-time adaptive optical applications." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968388280.
Повний текст джерелаJohnson, Eric K. "Low Loss Hybrid Waveguide Electric Field Sensor Based on Optical D-fiber." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2153.pdf.
Повний текст джерелаCheevers, Kevin. "Optical Fibre-Based Hydrophone and Critical Ignition in Detonation Cells." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42793.
Повний текст джерелаBender, William John Havercamp. "A chemical sensor based on surface plasmon resonance on surface modified optical fibers." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40097.
Повний текст джерелаPh. D.
Zheng, Gang. "Development of advanced birefringent fibre force sensor systems based on frequency modulation continuous wave (FMCW) technology." Thesis, Glasgow Caledonian University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337411.
Повний текст джерелаYung, Yat Fong. "Digital pixel sensor (DPS) array based on pulse width modulation (PWM) scheme /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20YUNG.
Повний текст джерелаDonlagicÌ, Denis. "Microbend sensor structure based on selective excitation and filtering of the modes in graded index optical fibres." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248635.
Повний текст джерелаDunn, Peter L. "Development of a video-based slurry sensor for on-line ash analysis." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-02132009-171601/.
Повний текст джерелаLobato, Bailón Laura. "Internal dynamics of heme-based sensor proteins studied using advanced time-resolved optical spectroscopy." Palaiseau, Ecole polytechnique, 2013. http://pastel.archives-ouvertes.fr/pastel-00866894.
Повний текст джерелаHeme-proteins are involved in a large range of biological functions, including respiration, oxygen transport and xenobiotic detoxification. Importantly, bacterial heme-based sensor proteins exploit the ligation properties of heme to sense environmental gases. This thesis focuses on internal dynamics studies of the 6-coordinate heme-based gas sensor proteins CooA, from Rhodospirillum rubrum and DNR from Pseudomonas aeruginosa that are involved in adaptation of the metabolism of the organism to their environment. CooA and DNR, belonging to the important family of catabolite gene activator proteins, are transcription factors that bind DNA upon gas activation, thus enabling transcription of specific genes. Both sensor proteins are thought to undergo a large and delocalized conformational change upon binding of the physiological ligand to the heme (CO for CooA and NO for DNR). Here advanced optical spectroscopy techniques are used to investigate the mechanism and molecular pathway of activation/desactivation in this class of proteins. DNA-protein interactions were studied with steady-state and femtosecond ultrafast time resolved fluorescence techniques, using labeled DNA substrates. Physiological ligand-sensitive DNA binding in the nanomolar affinity range was deduced from anisotropy experiments. Quenching of the fluorescence label by energy transfer to the native heme in the protein moiety of the complex was observed, and the rate of this process, reflecting the heme-substrate distance, was determined directly from the measured fluorescence decays. This observation opens the perspective of mapping out the global protein conformational changes using time-resolved FRET techniques. The primary processes in heme-based sensor switching mechanisms concern ligand binding and ligand dissociation from the heme. Femtosecond transient absorption experiments were performed in order to study the ligand dynamics in CooA and DNR in the vicinity of the heme. In DNR, upon photodissociation of NO, particularly fast and efficient geminate recombination was observed. This strongly strengthens the hypothesis that NO-sensors act as ligand traps. Also, the energetic barriers involved in CO migration have been determined in both sensor proteins by temperature dependence studies. All 6-coordinate heme-based sensor proteins that function via the exchange of an internal residue and the gas molecule as a heme ligand, display barrierless recombination and a thermally activated CO-escape out of the heme pocket. By contrast, the barrier for the CO-escape appears smaller or absent for 5-coordinate systems, as has been found for the mycobacterial heme-sensor DosT. These findings point to a general mechanism, where similar protein motions are required for both, ligand exchange and ligand escape. For reasons of comparison, the energetic barriers have also been studied in ligand binding variants of the electron transfer protein cytochrome c. Here, a more complex mechanism of multiple barriers in the ligand escape pathway was deduced. This feature is proposed to reflect the rather rigid nature of this non-sensor protein, which contains a 6-coordinate heme and is devoid of ligand entry pathways in the native state. Finally, the primary processes occurring in the wild type and mutant heme domains of the recently discovered oxygen sensor YddV from Escherichia coli were investigated. In particular, an important role in the ligand dynamics was elucidated for the distal tyrosine residue. This residue hydrogen bonds to heme-bound O2 and NO molecules and was found to have a remarkably discriminating effect: after respective dissociation from the heme, it strongly promotes O2 rebinding, but favors NO escape from the heme pocket
Oh, Ki Dong. "Optical Fiber Fabry-Perot Interferometer based Sensor Instrumentation System for Low Magnetic Field Measurement." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29687.
Повний текст джерелаPh. D.
Paap, Arie Jacobus. "Development of an optical sensor for real-time weed detection using laser based spectroscopy." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2014. https://ro.ecu.edu.au/theses/1282.
Повний текст джерелаQian, Zexin. "The Impact of Humidity on an Optical Chemical Sensing Device for Non-invasive Exhaled Gas Monitoring." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1471347710.
Повний текст джерелаRaman, Baranidharan. "Sensor-based machine olfaction with neuromorphic models of the olfactory system." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4984.
Повний текст джерелаHolmberg, Patrik. "Laser processing of Silica based glass." Doctoral thesis, KTH, Laserfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173929.
Повний текст джерелаHuvudtemana i denna avhandling är fotokänslighet och fotostrukturering av optiska fibrer och bulk glas. Trots att forskning inom fotokänslighet i glas och optiska fibrer har pågått under mer än tre decennier är de bakomliggande mekanismerna ännu inte klarlagda. Syftet var att få en bättre förståelse för fotoresponsen genom att studera fotokäsligheten ur ett termodynamiskt perspektiv, i motsats till etablerad forskning med fokus på punktdefekter och strukturförändringar, samt mekaniska spännings effekter i optiska fibrer. Optiska fibrer användes för flertalet av de experimentella studierna av två skäl; för det första är fotokänsligheten i fibrer större och dessutom vet man mindre om bakomliggande mekanismer jämfört med motsvarande bulk glas, och för det andra kan fibrer vara enklare att studera eftersom de experimentellt kan ses som en endimensionell struktur.Inledningsvis utfördes ablaherings experiment på bulk glas med en infraröd laser med pikosekund pulser. Raka kanaler med ett designtvärsnitt på 40x40 μm tillverkades på ovansidan (mot infallande ljus) och bottensidan av provet och de resulterande geometrierna analyserades. Resultaten visar en högre känslighet för variationer i experimentella parametrar vid ablahering på undersidan vilket kan förklaras av inkubations effekter i materialet. Dessutom är den resulterande geometrin på ovansidan V-formad, oavsett experimentella parametrar, vilket kunde relateras till den numeriska aperturen hos den fokuserande linsen, vilket förklaras av skuggningseffekter.Efter detta arbete flyttades fokus mot optiska fibrer, UV inducerade fiber Bragg gitter (FBG), och termisk bearbetning med konventionell ugn samt även med en CO2-laser som källa för strålningsvärme.Först konstruerades ett system för CO2-laservärmning av fibrer. För mätning av temperaturen hos bearbetade fibrer användes en speciell sorts FBG med hög temperaturstabilitet, kallade ”Chemical Composition Gratings” (CCG). En grundlig karaktärisering och temperaturkalibrering utfördes och temperaturdynamiken mättes med en tidsupplösning på under en millisekund. Temperaturprofilen i fibern, och laserns strålprofil, kunde mätas med en spatiell upplösning begränsad av gitterlängden och fiberns diameter. Temperaturer upp till ~1750 °C, vilket är högre än mjukpunktstemperaturen, kunde mätas med korresponderande uppvärmnings- och avsvalningshastighet på 10.500 K/s och 6.500 K/s.Därefter gjordes en omfattande undersökning av värmebearbetning och termisk regenerering av FBG:er i telekomfiber. Resultaten visar att termisk gitter-regenerering aktiveras av flera olika mekanismer. Värmebearbetning vid en temperatur omkring 900 °C resulterade i starka gitter efter en regenerering vid en temperatur på 1100 °C. Två olika aktiveringsenergier kunde extraheras från en Arrhenius plot avseende brytningsindexmodulation och Braggvåglängd, med en skärningspunkt tillika runt 900 °C, vilket indikerar en avvägning mellan två motverkande mekanismer vid denna temperatur.Slutligen undersöktes temperaturdynamiken och de spektrala egenskaperna under tillverkning av långperiodiga fibergitter (LPG). Gittren tillverkades med CO2-vi iilasersystemet genom att skapa en periodisk urgröpning medelst termisk ablahering. Transmissionsförluster kunde reduceras med noggrant valda processparametrar. Dessa parametrar identifierades genom mätningar av ablaherat djup och transmissionsförlust som funktion av laserintensitet och exponeringstid.
QC 20150924
Chen, Ou. "Development of offset locking based distributed sensor, and, Study of polarization effects in optical fibers." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26869.
Повний текст джерелаZhang, Feng Hong. "A novel optical fibre sensor based on inter-fibre distributed coupling for particle concentration measurement." Thesis, Liverpool John Moores University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361510.
Повний текст джерелаTu, Minh Hieu. "Investigation of metal nanomaterials as a sensing element in LSPR-based optical fibre sensor development." Thesis, City University London, 2014. http://openaccess.city.ac.uk/5919/.
Повний текст джерелаKim, Chan Kyu. "Development of bio-photonic sensor based on laser-induced fluorescence." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-11052007-092200.
Повний текст джерелаSARAN, ANISH. "MEMS BASED FABRY PEROT PRESSURE SENSOR AND NON-ADHESIVE INTEGRATION ON OPTICAL FIBER BY ANODIC BONDING." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1084719088.
Повний текст джерелаBechhoefer, Eric R. "An indicator of message quality for a single optical sensor using a template based tracking algorithm." Thesis, Monterey, Calif. : Naval Postgraduate School, 1992. http://handle.dtic.mil/100.2/ADA252704.
Повний текст джерелаSargeant, Ramon Bradley. "A multi-axial optical fibre and linear polarizer based force and torque sensor for dexterous robotic fingertips." Thesis, King's College London (University of London), 2014. http://kclpure.kcl.ac.uk/portal/en/theses/a-multiaxial-optical-fibre-and-linear-polarizer-based-force-and-torque-sensor-for-dexterous-robotic-fingertips(a9c419a3-901e-4a56-9b02-00648539d17e).html.
Повний текст джерелаSymington, Andrew Colquhoun. "Cooperative, range-based localization for mobile sensors." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:dd4b793b-3cf7-45d0-8972-76fdd870e57c.
Повний текст джерелаPradhan, Manik. "Development of a diode-laser based optical sensor for continuous monitoring of trace gases in the atmosphere." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492655.
Повний текст джерелаLiu, Huanhuan. "A novel optical bio-chemical sensor based on hybrid nanostructures of Bowtie nanoantennas and Fabry-Perot Interferometer." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-01064196.
Повний текст джерелаBrush, Ursula Jane. "Design and Validation of an Intensity-Based POF Bend Sensor Applications in Measuring Three-Dimensional Trunk Motion." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269456459.
Повний текст джерелаShillig, Tyler. "Multi-point temperature sensing in gas turbines using fiber-based intrinsic Fabry-Perot interferometers." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/33612.
Повний текст джерелаMaster of Science