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 10 of 10 for “"Quantum capacitance"”.
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Quantum capacitance measurements of single-layer molybdenum disulfide
… were fabricated with the goal of measuring quantum capacitance and probing the transition metal dichalcogenide's density of states. In the final devices, no modulation of the quantum-capacitance was observed due to large Schottky barriers between the metal contacts and the molybdenum …
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Quantum capacitance in scaled down III-V FETs
… approach is the relatively small inversion-layer capacitance that is associated with a low-effective mass channel and the limits that this imposes on the gate capacitance that can be attained from barrier thickness scaling. This can seriously limit the current driving ability of scaled down …
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Charge dynamics in superconducting double dots
… in this thesis investigates transitions between quantum states in superconducting double dots (SDDs), a nanoscale device consisting of two aluminium superconducting islands coupled together by a Josephson junction, with each dot connected to a normal state lead. The energy landscape consists of a …
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Fabrication and electrical characterization of transistors made from carbon nanotubes and graphene
… justified by experiment. Temperature dependence, quantum capacitance, and multiterminal measurements are discussed.
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Electrolyte-gated graphene field-effect transistors : modeling and applications
… incorporates the effects of the double layer capacitance and the quantum capacitance of graphene. The model is validated through experimental graphene EGFETs, which were fabricated and measured to provide experimental data and extract graphene EGFET parameters such as mobility, minimum carrier …
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Dispersive Readout and Spin-State Spectroscopy of Industrially-Fabricated Silicon Quantum Dots
Encouraged by the promise of large-scale quantum computing, this thesis focuses on reliable and scalable readout of spin qubits in gate-defined silicon complementary metal-oxide-semiconductor quantum dots. In particular, this thesis studies the spin states and Pauli spin blockade (PSB) physics of …
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A General Interfacial Capacitance Model for Nanomaterial Supercapacitors: Insights from Computational Quantum Mechanics
… at the interface depend on a wide variety of quantum mechanical effects which are not accounted for within traditional continuum models based on partial differential equations. While there have been many efforts to address this knowledge gap through traditional methods, they are either limited …
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Characterization of nanoscale electronic materials using novel methods for scan probe microscopy
… and metallic carbon nanotubes by detecting their quantum capacitance, which is directly related to the density of states. We also explored Carbon Nanotube heterojunctions and metal-semiconductor interfaces; we believe that our results are direct evidence of electron-electron screening in …
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Novel radio frequency applications and automated characterisation of silicon quantum dots
… computers have revolutionised the 20th century, quantum computing could do the same in the 21st. For quantum supremacy, quantum error correcting codes will require an estimated million to billions of qubits. Regarding controlling and reading every qubit, classical electronics must be as close to …
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Electrical and thermal transport in 2D materials: role of environment and imperfections
… for graphene transistors, which includes quantum capacitance, generalized diffusion, carrier density dependent saturation velocity, and device electrostatics. We investigate how these graphene-specific effects change the results of conventional drift-diffusion simulation both in low and …