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Relevant bibliographies by topics / Quantum sensing / Dissertations / Theses

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Dissertations / Theses on the topic 'Quantum sensing'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Santos, Marcílio Manuel dos. "Quantum precision sensing." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=215279.

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2

Zhuang, Quntao. "Quantum enhanced sensing and communication." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119115.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Quantum phenomena such as entanglement and superposition enable performance beyond what classical physics can provide in tasks of computing, communication and sensing. Quantum sensing aims to enhance the measurement precision in parameter estimation or error probability in hypothesis testing. The first part of this thesis focuses on protocols for entanglement-enhanced sensing. However, various quantum sensing schemes' quantum ad

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3

Fernández, Lorenzo Samuel. "Exploiting symmetry and criticality in quantum sensing and quantum simulation." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/81274/.

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Decoherence and errors appear among the main challenges to implement successful quantum technologies. In this thesis I discuss the application of some general tools and principles that may be valuable resources to develop robust technologies, with applications in quantum sensing and quantum simulation. Firstly, we employ suitable periodically driving fields acting on the Ising model in order to tailor spin-spin interactions depending on the spatial direction of the bonds. In this way, we are able to simulate the quantum compass model on a square lattice. This system exhibits topological order

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4

Mulrooney, Ray. "Analyte sensing with luminescent quantum dots." Thesis, Robert Gordon University, 2009. http://hdl.handle.net/10059/452.

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Semiconducting nanocrystals otherwise known as Quantum Dots (QDs) have attracted considerable attention over the last number of years due to their unique optical properties and potential applications. Their narrow size-tunable emission spectra, broad absorption spectra, resistance to photobleaching and long fluorescent lifetimes make them ideal for sensing ions and small molecules. This thesis explores the potential of QDs to function as the emissive unit in fluorescent probes. Primarily, the focus of the work is to develop QD-based sensors that operate through an electron transfer mechanism.

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5

Hay, Kenneth Gillespie. "Gas sensing using quantum cascade lasers." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=12766.

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6

Ajoy, Ashok. "Quantum assisted sensing, simulation and control." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107326.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 453-485).<br>This thesis describes experimental and theoretical work making contributions with the aims of improving and advancing techniques of quantum metrology, simulation and control. Towards this goal, we engineer novel devices for quantum sensing, particularly the measurement of rotations, magnetic fields, and single spins towards the reconstruction of single-molecule structures. We also develop

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7

Dietsche, Eva-Katharina. "Quantum sensing with Rydberg Schrödinger cat states." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066211/document.

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Les atomes de Rydberg sont des états très excités, dans lesquels un électron est placé sur une orbite éloignée du noyau. Leur grand dipôle électrique les rend très sensibles à leur environnement électromagnétique. En utilisant des champs microondes et radiofréquences, nous préparons des états quantiques non-classiques spécialement conçus pour exploiter au mieux cette sensibilité et mesurer des champs électriques et magnétiques avec une grande précision. Dans la première partie, nous préparons des états chats de Schrödinger, superpositions d'orbitales de polarisabilités très différentes, qui no

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8

Maurer, Peter. "Coherent control of diamond defects for quantum information science and quantum sensing." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11431.

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Quantum mechanics, arguably one of the greatest achievements of modern physics, has not only fundamentally changed our understanding of nature but is also taking an ever increasing role in engineering. Today, the control of quantum systems has already had a far-reaching impact on time and frequency metrology. By gaining further control over a large variety of different quantum systems, many potential applications are emerging. Those applications range from the development of quantum sensors and new quantum metrological approaches to the realization of quantum information processors and quantum

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9

Spedalieri, Gaetana. "Quantum hypothesis testing : theory and applications to quantum sensing and data readout." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/13736/.

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In this thesis we investigate the theory of quantum hypothesis testing and its potential applications for the new area of quantum technologies. We first consider the asymmetric formulation of quantum hypothesis testing where the aim is to minimize the probability of false negatives and the main tool is provided by the quantum Hoeffding bound. In this context we provide a general recipe for computing this bound in the most important scenario for continuous variable quantum information, that of Gaussian states. We then study both asymmetric and symmetric quantum hypothesis testing in the context

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10

Charlton, Christy. "Quantum Cascade Lasers for Mid-Infrared Chemical Sensing." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/13953.

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The mid-infrared (MIR) spectral range (2-20 m) is particularly useful for chemical sensing due to the excitation of fundamental rotational and vibrational modes. In the fingerprint region (10-20 m), most organic analytes have unique absorption patterns; absorption measurements in this region provide molecule-specific information with high sensitivity. Quantum cascade lasers (QCLs) present an ideal light source for (MIR) chemical sensing due to their narrow linewidth, high spectral density, compact size, and ease of fabrication of nearly any MIR wavelength. As the emission wavelength is depe

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11

Higgins, Kieran. "Quantum technologies for enhanced sensing and light absorption." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:f21e691a-f83e-4c9f-bc51-d94c4703e16e.

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The counterintuitive properties of quantum mechanics have the potential to produce revolutionary new technology. The applications of these devices are both vital and diverse: the efficient generation of energy from light, sensing and measuring with exquisite precision, and information processing with unparalleled speed. In this thesis, I use the theory of open quantum systems to investigate quantum technologies for enhanced sensing and light absorption. In the first research chapter, we develop a new method for describing qubit dynamics in the Rabi model. We obtain a new expression for the ac

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12

SAMANTARAY, NIGAM LAHARI. "Quantum enhanced imaging and sensing with correlated light." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2667303.

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Without light, there would be no sight. Light acts as a probe in various measurement techniques ranging from imaging to spectroscopy, from small scale cantilever displace- ment measurement in atomic force microscopy to large scale mirror motion in interfer- ometry, light detection and ranging (LIDAR) and many other fields. As the light probe intensity rises, it not only allows reducing the background noise effect, but it also aids precision to the measurement by reducing the photon noise (shot-noise) contribution. However, increasing intensity beyond certain threshold level is not always

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13

Cooper-Roy, Alexandre. "Coherent control of electron spins in diamond for quantum information science and quantum sensing." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/111688.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 115-122).<br>This thesis introduces and experimentally demonstrates coherent control techniques to exploit electron spins in diamond for applications in quantum information processing and quantum sensing. Specifically, optically-detected

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14

Zander, Jascha [Verfasser]. "Squeezed and Entangled Light: From Foundations of Quantum Mechanics to Quantum Sensing / Jascha Zander." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2021. http://d-nb.info/1240386389/34.

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15

Vaitiekus, Deivis. "Development of quantum cascade lasers for gas sensing applications." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/13916/.

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Quantum cascade lasers (QCLs) are capable of high power, tunable wavelength and single mode emission at room temperature in the mid-infrared wavelength region. These capabilities make them perfect light sources for laser based gas spectroscopy. The work described in this thesis focuses on development of QCLs suitable for selective gas sensing applications. The thesis starts with the description of different changes to the QCL active region design. These changes were studied in order to improve laser performance while keeping the emission wavelength fixed. The proposed modifications were perfor

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Li, Luozhou. "Diamond nanophotonic devices for quantum information processing and sensing." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101573.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 107-123).<br>The nitrogen vacancy (NV) center in diamond has in recent years emerged as a promising solid state system for quantum information processing and sensing applications. However, using NV centers to build up quantum networks for these applications faces several challenges, such as the lack of efficient interface between NVs and photons, difficulty of maintaining spin coherence tim

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Lemon, Christopher M. (Christopher Michael). "Supramolecular quantum dot-porphyrin assemblies for biological oxygen sensing." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79271.

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Thesis (S.M. in Inorganic Chemistry)--Massachusetts Institute of Technology, Dept. of Chemistry, 2013.<br>Vita. Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Generating metabolic profiles of tumors provides a spatiotemporal map of the concentration of key species to assess and quantify tumor growth, metabolism, and response to therapy. Because the tumor microenvironment is characterized by hypoxia, the concentration of oxygen is an important indicator of tumor health. Understanding how this parameter changes as a function of disease progression is critical to

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18

Al-Galiby, Qusiy. "Quantum theory of sensing and thermoelectricity in molecular nanostructures." Thesis, Lancaster University, 2016. http://eprints.lancs.ac.uk/80279/.

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This thesis presents a series of studies into the electronic and thermoelectric properties of molecular junction single organic molecules: They include perylene Bisimide (PBIs), naphthalenediimide (NDI), metallo-porphryins and a large set of symmetric and asymmetric molecules. Two main techniques will be included in the theoretical approach, which are Density Functional Theory, which is implemented in the SIESTA code [1], and the Green’s function formalism of elctron transport (Chapter 2), which is implemented in the GOLLUM code [2], it is a next-generation code, born out of the non-equilibriu

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19

Sahand, Sina. "Microresonators and photonic crystals for quantum optics and sensing." College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8345.

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Thesis (M.S.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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20

Frey, Virginia. "Characterizing and mitigating temporally correlated noise processes in quantum systems." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/21871.

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Quantum-enabled technologies promise advancements across a huge range of industrial, metrological and medical applications and are already demonstrating significant impacts, especially in the realm of sensing and metrology. While the extreme sensitivity of quantum systems to their environment is fueling those applications, it also represents a major hurdle to technologies which require long-term stability such as quantum computing and quantum simulations. In addition to the inherent decoherence phenomenon, the challenge associated with controlling a quantum system accurately and precisely, doe

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Young, Carolyn. "Transport and charge sensing measurements of coupled quantum dot devices." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106374.

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We study transport and charge sensing measurements of double quantum dots (DQDs). Several proposals have been put forth for DQD-based qubits, making these systems interesting from the perspective of solid-state quantum computation. This thesis discusses three theoretical studies of error-generation in DQD qubit read-out. First, we consider transport measurements and calculate the contribution to the DQD conductance from cotunneling processes involving the virtual occupation of excited states. We present an efficient numerical method, based on the tight-binding formalism, for the calculation of

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22

Foy, Christopher Ph D. (Christopher C. )Massachusetts Institute of Technology. "Solid-state spin-integrated circuits for quantum sensing and control." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127017.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 131-138).<br>Spin systems are an increasingly important quantum-sensing platform. In particular, atomic defect centers in diamond called nitrogen-vacancy (NV) centers offer impressive room temperature imaging capabilities for both magnetic fields and temperature. NV-based sensing platforms have found utility in solid-state physics, biological systems, and vector magnetometry. These

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23

Fisher, Melissa. "Optical sensing with CdSe quantum dots in condensed phase media." Tallahassee, Fla. : Florida State University, 2009. http://etd.lib.fsu.edu/theses/available/etd-11072009-112150/.

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Thesis (Ph. D.)--Florida State University, 2009.<br>Advisor: Geoffrey F. Strouse, Florida State University, College of Arts and Sciences, Dept. of Chemistry and Biochemistry. Title and description from dissertation home page (viewed Mar. 5, 2010). Document formatted into pages; contains xii, 157 pages. Includes bibliographical references.

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DE, ANGELIS ROBERTA. "Optical and chemical sensing investigation of InP surface quantum dots." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2012. http://hdl.handle.net/2108/202157.

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Photophysical properties of semiconductor quantum dots (QDs), such as broad absorption band and size dependent spectral emission, together with the high effective surface area available for interaction with target chemicals are attractive for applications like chem-/bio-sensors and lab-onchips. In the present work the state of the art of the research field will be discussed, with particular emphasis on the physical and chemical properties of near-infrared (NIR) emitting quantum dots. So far most of the reports of chem-/bio-sensing with QDs are based on colloidal nanocrystals synthesized by wet

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25

Lee, Junghyun Ph D. Massachusetts Institute of Technology. "Dynamic and geometric control of electronic spins in diamond for quantum sensing and quantum information science." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119108.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 163-172).<br>In recent years, the nitrogen-vacancy (NV) color center in diamond, electronic spin defects embedded in a solid-state system, has emerged as a promising platform for quantum sensing and quantum information science in ambient temperature. Its capability of robust but high-precision spin control allows the NV center to be not only a useful atomic-scale magnetic field sensor but also an attractive building block for

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26

Chalopin, Thomas. "Quantum-enhanced sensing and synthetic Landau levels with ultracold dysprosium atoms Quantum-enhanced sensing using non-classical spin states of a highly magnetic atom Enhanced magnetic sensitivity with non-gaussian quantum fluctuations." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS589.

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Cette thèse porte sur des études expérimentales basées sur les interactions entre photons et atomes ultrafroids de dysprosium. La structure électronique du dysprosium est à l'origine de ses propriétés atomiques singulières, donnant accès à une phénoménologie physique diversifiée. Dans la première partie, nous donnons une description globale de notre expérience, et du protocole expérimental qui permet la production de gaz dégénérés de dysprosium bosonique. Une étape importante de notre séquence expérimentale porte sur l'utilisation de la raie d'intercombinaison à 626 nm pour le refroidissement

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27

Zhang, Haiyan. "Development of a novel, functional quantum dot-DNA/aptamer sensing technology." Thesis, University of Leeds, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658610.

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Aptamers are short single-stranded DNA or RNA oligonucleotides artificially selected against specific targets. They exhibit high target binding affinity and exquisite specificity, making them very useful in developing biosensors for a wide range of targets, such as proteins, peptides, amino acids, drugs, metal ions and even whole cells. While fluorescent semiconductor nanocrystals, also known as quantum dots (QDs), have unique size-dependent, bright and extremely photo-stable fluorescence that make them as excellent fluorescent labels for biological imaging, sensing, cell tracking/trafficking

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Ahmed, Imtiaz. "Radio-frequency capacitive gate-based sensing for silicon CMOS quantum electronics." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/284933.

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This thesis focuses on implementing radio frequency (rf) reflectometry techniques for dispersive detection of charge and spin dynamics in nanoscale devices. I have investigated three aspects of rf reflectometry using state-of-the-art silicon (Si) complementary metal-oxide-semiconductor (CMOS) nanowire field effect transistors (NWFETs). First, a high-sensitivity capacitive gate-based charge sensor is developed by optimising the external matching circuit to detect capacitive changes in the high frequency resonator. A new circuit topology is used where superconducting niobium nitride (NbN) induct

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Black, Paul Richie. "The application of quantum cascade lasers to mid-infrared gas sensing." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25739.

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This thesis explains the development of a quantum cascade laser based gas sensor and the verification of performance of the resulting product. The capability to detect trace levels of multiple species in varying physical conditions, specifically high temperature is shown. Optical designs capable of allowing the measurement technique to be used in a variety of applications have been developed, specifically multi-pass gas absorption cells. The accurate, precise and high speed analysis of the resulting data is made possible by spectral analysis algorithms. These developments and techniques were t

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Fujisaku, Takahiro. "Development of quantum sensing methods using nitrogen－vacancy centers in diamonds." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263682.

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31

Cupps, Jay Fan Xudong. "Synthesis and application of semiconductor quantum dots in novel sensing applications." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/6101.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract, appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on October 9, 2009) Thesis advisor: Dr. Xudong Fan. Includes bibliographical references.

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32

Schneider, Andre [Verfasser], and M. [Akademischer Betreuer] Weides. "Quantum Sensing Experiments with Superconducting Qubits / Andre Schneider ; Betreuer: M. Weides." Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1205807586/34.

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Lai, Khue Tian. "Optical characterisation of quantum well infrared photodetectors (QWIPs) for gas sensing applications." Thesis, University of Hull, 2004. http://hydra.hull.ac.uk/resources/hull:5592.

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Although much work has been done on λ∼5-12 μm quantum well infrared photodetectors (QvWPs), the distinctive feature of this project is the use of strain compensated materials on InP substrates, AIAs (tensile) and InGaAs (compressive), to achieve shorter wavelengths and higher temperature operation. Stepped wells, high thin barriers, and strained layers have been used to achieve λ∼2-5 μm and also enhanced normal incidence absorption. These structures also give an additional degree of freedom to control the position of the excited states in the QWIPs conduction band. The strain-balancing allows

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Lang, Jacob. "Dynamical decoupling based quantum sensing : Floquet analysis and finite-duration-pulse effects." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10057671/.

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A spin qubit can be protected from a dephasing spin bath using dynamical decoupling (DD). Microwave pi-pulses are repeatedly applied to the spin qubit to invert its state and average out any dephasing. Importantly, this protection fails when the DD pulse spacing is resonant with nuclear spins in the bath and characteristic dips appear in coherence traces forming the basis for nanoscale NMR and MRI. This emerging quantum technology has been demonstrated with the nitrogen vacancy center in diamond. Most DD protocols apply periodic repetitions of a basic pulse unit. This repetition motivates us t

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PERILLI, DANIELE. "Quantum Mechanical Modeling of Chemical Activated 2D-Materials for Electrocatalysis and Sensing." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/307660.

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I materiali bidimensionali hanno suscitato grande interesse da parte della comunità scientifica grazie alle loro eccezionali proprietà fisiche e le loro promettenti applicazioni in molti campi di interesse tecnologico. In particolare, negli ultimi anni, la frontiera della ricerca si è spostata dallo studio delle loro proprietà di base a sistemi 2D modificati chimicamente, quali materiali drogati, e alla loro interazione con altri sistemi, come nanoparticelle o superfici. In questo contesto, le superfici metalliche sono spesso impiegate come catalizzatori eterogenei per la crescita mediante CV

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Papatryfonos, Konstantinos. "1.6-2.5 μm long wavelength quantum dash based lasers for gas sensing". Thesis, Evry, Institut national des télécommunications, 2015. http://www.theses.fr/2015TELE0011/document.

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Ce travail de thèse a porté sur l’étude des propriétés fondamentales de bâtonnets quantiques InAs/InP formant la zone active de diodes lasers, à l’aide de microscopie et spectroscopie à effet tunnel à balayage. Nous avons pu étudier la nature de la dimensionnalité de ces nanostructures, mesurer la structure électronique de bâtonnets uniques en fonction de leur position dans la jonction PIN et également établir la cartographie de leur fonction d’onde à l’aide de mesures de conductivité différentielle. Nous avons de plus étudié le potentiel de ces bâtonnets quantiques comme milieu à gain de diod

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Papatryfonos, Konstantinos. "1.6-2.5 μm long wavelength quantum dash based lasers for gas sensing". Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2015. http://www.theses.fr/2015TELE0011.

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Ce travail de thèse a porté sur l’étude des propriétés fondamentales de bâtonnets quantiques InAs/InP formant la zone active de diodes lasers, à l’aide de microscopie et spectroscopie à effet tunnel à balayage. Nous avons pu étudier la nature de la dimensionnalité de ces nanostructures, mesurer la structure électronique de bâtonnets uniques en fonction de leur position dans la jonction PIN et également établir la cartographie de leur fonction d’onde à l’aide de mesures de conductivité différentielle. Nous avons de plus étudié le potentiel de ces bâtonnets quantiques comme milieu à gain de diod

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Wang, Shujun. "Synthesis of Graphene Quantum Dots and Their Applications in Sensing and Light Harvesting." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/366102.

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Graphene quantum dot (GQD) is a derivative of 2D material graphene. It normally refers to small fragments of graphene having lateral size below 100nm. Not only do GQDs inherit some of the wonder properties of bulk graphene, but they possess properties unique from bulk graphene due to the quantum confinement and edge effects. As an emerging material, GQDs presents a new open field for broad investigations, from synthesis, explanation of properties to promising applications including sensing, bio-imaging, nanomedicine (e. g. drug delivery), energy conversion (e. g. photovoltaic devices and photo

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BRUNI, FRANCESCO. "NOVEL MATERIAL DESIGN AND MANIPULATION STRATEGIES FOR ADVANCED OPTOELECTRONIC APPLICATIONS." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2017. http://hdl.handle.net/10281/151660.

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Il mio progetto di dottorato è stato focalizzato sui semiconduttori organici per applicazioni fotovoltaiche e di fotorivelazione. Inizialmente ho lavorato sul controllo morfologico di blende binarie di molecole organiche e fullereni usando la cosiddetta strategia dei pigmenti latenti. In particolare ho lavorato sull'ingenierizzazione dello strato attivo di celle solari organiche a eterogiunzione. Ho dimostrato una nuova strategia per controllare la segregazione di fase in film sottili di molecole elettron donatrici e fullereni, introducendo nel sistema un network di legami di idrogeno attivato

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Albahrani, Sayed Mohamed Baqer. "Photoluminescent CdSe/CdS/ZnS quantum dots for temperature and pressure sensing in elastohydrodynamic." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI016/document.

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La température et la pression sont deux paramètres particulièrement importants pour l’optimisation des performances du régime de lubrification élastohydrodynamique (EHL). A ce jour, différentes méthodes expérimentales ont été développées, avec plus ou moins du succès, pour la mesure de ces deux paramètres. Ce travail présente, en continuité de ces approches, des investigations visant à développer une nouvelle technique in situ permettant de mesurer localement ces deux grandeurs dans les contacts élastohydrodynamiques (EHD). Cette technique exploite la sensibilité en photoluminescence (PL) des

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Freire, Rafael Melo. "Magnetic Nanoparticles and Carbon Quantum Dots: Interdisciplinary Nanoparticles for Sensing and/or Education." reponame:Repositório Institucional da UFC, 2016. http://www.repositorio.ufc.br/handle/riufc/22447.

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FREIRE, Rafael Melo. Magnetic nanoparticles and carbon quantum dots: interdisciplinary nanoparticles for sensing and/or education. 182 f. 2016. Tese (Doutorado em Química)-Universidade Federal do Ceará, Fortaleza, 2016.<br>Submitted by Jairo Viana (jairo@ufc.br) on 2017-04-04T18:36:04Z No. of bitstreams: 1 2016_tese_rmfreire.pdf: 11804231 bytes, checksum: 1a676a521f06fad619e4adfb61cc2a45 (MD5)<br>Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2017-04-04T18:36:25Z (GMT) No. of bitstreams: 1 2016_tese_rmfreire.pdf: 11804231 bytes, checksum: 1a676a521f06fad619e4adfb61cc2a45 (MD5

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Lu, Kyle Benjamin. "Microwave Instrumentation and Sensing Techniques for Quantum Efficiency and Minority-Carrier Lifetime Measurements." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3503.

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A non-contact method characterizing the quantum efficiency of a solar cell using the microwave reflectance signature is presented in this thesis. Traditional solar cell quantum efficiency (QE) measurements are only possible near the completion of the fabrication process using contacts in direct physical connection with the metalized surface tabs to probe and extract charge carriers from the device. However, pressure within the solar metrology industry to report the spectral performance of the device earlier in the manufacturing process as part of the process control loop requires that a new no

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Basso, Luca. "Laser-synthesis and optical functionalization of NV-fluorescent nanodiamonds for quantum sensing applications." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/250439.

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The absence of a cheap and easily scalable synthesis technique for nitrogen-vacancy (NV) centers enriched nanodiamonds (NDs) is a critical factor for the development of devices based on this very peculiar nanoparticle. Indeed, the combination between the unique NV fluorescence properties and NDs characteristics allow to obtain a tool having quantum sensing capabilities, with nanometric spatial resolution, which is able to operate in a wide range of temperature, pressures and in harsh chemical conditions. NVenriched NDs applications in nanothermometry, nanomagnetometry and in bio-imaging have a

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Basso, Luca. "Laser-synthesis and optical functionalization of NV-fluorescent nanodiamonds for quantum sensing applications." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/250439.

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Abstract:

The absence of a cheap and easily scalable synthesis technique for nitrogen-vacancy (NV) centers enriched nanodiamonds (NDs) is a critical factor for the development of devices based on this very peculiar nanoparticle. Indeed, the combination between the unique NV fluorescence properties and NDs characteristics allow to obtain a tool having quantum sensing capabilities, with nanometric spatial resolution, which is able to operate in a wide range of temperature, pressures and in harsh chemical conditions. NVenriched NDs applications in nanothermometry, nanomagnetometry and in bio-imaging have a

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KIPTIEMOI, KIPRONO KORIR. "ZnO nanowires for energy harvesting and gas sensing applications: a quantum mechanical study." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2539901.

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The research activity related to my PhD project is focused on providing a better understanding on energy harvesting capabilities and gas sensing mechanism of ZnO nanowires. Nanowires made of materials with non-centrosymmetric crystal structures are expected to be ideal building blocks for self-powered nanodevices due to their piezoelectric properties, yet a controversial explanation of the effective operational mechanisms and size effects still delays their real exploitation. To solve this controversy, we propose a methodology based on Density Functional Theory (DFT) calculations of the r

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Blums, Valdis. "Diffractive Optics for Sensing and Networking with Trapped Ions." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/401639.

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In this thesis I present my contribution towards a quantum communication platform using trapped ions, Fresnel optics, and frequency conversion waveguides. I discuss the major components required for this platform, as well as show our high control over trapped ions. I also demonstrate that the high resolution imaging of lens-based optical interconnects enable a new way to monitor trapped ions as 3D sub-attonewton force sensors. The experiments presented here were achieved across two Yb+ ion traps.<br>Thesis (PhD Doctorate)<br>Doctor of Philosophy (PhD)<br>School of Environment and Sc<br>Science

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Dehghani, Alireza. "Development of Non-Metallic Quantum Dots for Bioimaging and Biosensing." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/21007.

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Biocompatible and photostable fluorescent probes are crucial yet challenging to develop for visualizing and tracking biological functions and interactions that occur in living organisms. We synthesized biocompatible carbon quantum dots (CQDs) with 15% quantum yield (QY) and tested them for cellular and scaffold imaging at variable depths. The CQDs, synthesized from collagen under controlled and benign conditions in a hydrothermal reactor, were characterized for their fundamental physicochemical properties. The fluorescence characteristics were determined using two-photon microscopy and based o

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Pang, Shuo. "Whispering gallery modes in quantum dot-embedded dielectric microspheres for tagless remote refractometric sensing." Texas A&M University, 2008. http://hdl.handle.net/1969.1/85998.

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This thesis presents the development of a refractometric sensor based on quantum dot-embedded polystyrene microspheres. The technique uses optical resonances within a microsphere, known as Whispering-Gallery Modes (WGMs), which produce narrow spectral peaks. The basic theory of WGMs is reviewed and specifically discussed for biosensing application. The spectral shifts of WGM peaks are sensitive to changes in the local refractive index. In the experiments, two-photon excited luminescence from the quantum dots couples into several WGMs within the microresonator. By optimizing the detection area,

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Hagelin, Alexander. "ZnO nanoparticles : synthesis of Ga-doped ZnO, oxygen gas sensing and quantum chemical investigation." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-64730.

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Doped ZnO nanoparticles were synthesized by three different methods – electrochemical deposition under oxidizing conditions (EDOC) , combustion method and wet chemical synthesis – for investigating the oxygen gas sensing response. Ga-doped ZnO was mostly synthesized but also In-doped ZnO was made. The samples were analyzed by XRD, SEM, EDX and TEM. Gas response curves are given alongside with Langmuir fitted curves and data for pure ZnO and Ga-doped ZnO. DFT quantum chemical investigation of cluster models ZnO nanoparticles were performed to evaluate defect effects and oxygen and nitrogen diox

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Schönfeld, Rolf Simon [Verfasser]. "Optical readout of single spins for quantum computing and magnetic sensing / Rolf Simon Schönfeld." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1029936900/34.

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