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 11 of 11 for “"charge sensing"”.
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Electromechanical Modeling of Encapsulated Ionic Polymer Transducers
… and correlates well with the measured response. Charge sensing and blocked force were found to increase for a transducer after encapsulation; this could be due to the higher coherence obtained in testing after encapsulation and is not predicted by the model. The model predicts charge sensing and …
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Charge polarisation and excited state energy level structure of silicon isolated double quantum dots
… integrated Single Electron Transistor (SET) for charge sensing. The structures are fabricated with post oxidation island diameters of between 80 and 125nm on the same chip by means of electron beam lithography and reactive ion etching to give trench isolation. Low noise electrical measurements …
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Electron tunneling and spin relaxation in a lateral quantum dot
We report measurements that use real-time charge sensing to probe a single-electron lateral quantum dot. The charge sensor is a quantum point contact (QPC) adjacent to the dot and the sensitivity is comparable to other QPC-based systems. We develop an automated feedback system to position the …
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Open-Gate Junction Field-Effect Transistor for Chemical and Biomolecular Analysis
… have emerged as a transformative platform in biosensing, effectively bridging the gap between electronics and biology by measuring the intrinsic charge of bioparticles. The development of FET-based sensing techniques can be traced back to the 1970s with the advent of the ion-sensitive FET …
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DEVICE DEVELOPMENT AND CHARACTERIZATION FOR SOLID-STATE QUANTUM COMPUTATION
… of $\rm{AlO}_x$ instability -- the long-term charge offset drift of Al/$\rm{AlO}_x$/Al single-electron transistors (SETs) is significantly reduced (best $\Delta{Q_0}=0.13$ e $\pm$ 0.01 e over $\approx7.6$ days and no observation of $\Delta{Q_0}$ exceeding 1 e), compared to the results of …
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Charge dynamics in superconducting double dots
… consists of a two level manifold of even charge parity Cooper pair states, and continuous bands corresponding to charge states with single quasiparticles in one or both islands. These devices are fabricated using shadow mask evaporation, and are measured at sub Kelvin temperatures using a …
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III-V compound semiconductor integrated charge storage structures for dynamic and non-volatile memory elements.
… an investigation into a novel group of GaAs charge storage devices. These devices, which are an integration of bipolar and junction field effect transistor structures were conceived, designed, fabricated, and tested within this study. The purpose was to analyse new types of charge storage …
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Charge detection in semiconductor nanostructures
In this thesis nanometer scale charge sensors are used to study charge transport in two solid state systems: Lateral GaAs quantum dots and hydrogenated amorphous silicon (a-Si:H). In both of these experiments we use time-resolved charge sensing to study electron transport in regimes that are not …
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Radio-Frequency Capacitive Gate-based Sensing for Silicon CMOS Quantum Electronics
… 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 …
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Characterization and Modeling of the Ionomer-Conductor Interface in Ionic Polymer Transducers
… less than 5 V), and high sensitivity in the charge-sensing mode. A series of experiments on actuators with various ionic polymers such as Nafion and novel poly(Arylene ether disulphonate) systems (BPS and PATS) and electrode composition demonstrated the existence of a linear correlation …
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Exploring Isolated Double-Quantum-Dot Detectors for Scalable Quantum Computing Architectures
… the detection of quantum states, either spin or charge, should also be fast, robust, and efficient. As the number of ancilla qubits needed for error correction scales with the number of computational qubits, there is a need for highly scalable, reproducible designs with a density sufficient to …