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 “"negative capacitance"”.
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Operational Amplifier Bandwidth Extension Using Negative Capacitance Generation
… The proposed method of this thesis uses Negative Capacitance Generation (NCG), which involves using the Miller effect to generate an equivalent negative capacitance at a given node in a circuit, to extend the bandwidth of an op-amp. This is accomplished by first applying NCG to the second …
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Energy efficient computing : from nanotubes to negative capacitance
… advantage of new device physics (specifically, negative capacitance), as well as new device geometries (specifically, back-gate geometries). Yet despite this potential, there is a major challenge: while new nanomaterials introduce many new opportunities (as mentioned above), they simultaneously …
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Power and performance optimization of negative capacitance transistor circuits
Negative Capacitance Field Effect Transistor (NCFET) is an emerging technology solution for achieving extremely low power and high performance. The negative capacitance exhibited by the ferroelectric layer of the transistor results in very high effective gate capacitance leading to electrostatic …
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Charged domain wall phenomena and associated negative capacitance in boracites
… been invoked. In particular, the phenomenon of negative capacitance has been proposed, and it is here that ferroelectrics, particularly their constituent domain walls, could play a crucial role in the continued success of transistor-based technologies; ephemeral domain wall-based transistors, …
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Large-Scale Atomistic Simulations of Complex and Functional Properties of Ferroic Materials
… topological defects such as FE vortices and negative dielectric responses in superlattices. In this thesis, I employ two large-scale atomistic techniques, the first-principles-based effective Hamiltonian (HEff) method and the linear-scaling three-dimensional fragment (LS3DF) method. I use …
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Probing Nanoscale Functional Properties of Perovskite and Wurtzite Ferroelectrics via Scanning Probe Microscopy
… for the prospective design of forthcoming negative capacitance components. Further, a robust switchable polarization in individual nanocrystallites within thin films of Mg-doped zinc oxide (MZO) with a polar wurtzite crystal structure is demonstrated. Through various SPM techniques, voltage …
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Silicon on Ferroelectric Insulator Field Effect Transistor (SOFFET): A Radical Alternative to Overcome the Thermionic Limit
… a novel design that exploits the concept of negative capacitance. The new field-effect-transistor (FET) based on ferroelectric insulator named Silicon-On-Ferroelectric Insulator Field effect-transistor (SOFFET). This proposal is a promising methodology for future ultra low-power applications …
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High performance III-nitride light-emitting diodes for visible light communications and micro-displays
… polymer. A detailed study on size-dependent capacitance in III-nitride micro-LEDs, especially the negative capacitance (NC) effect, has also been reported in this thesis. This capacitance research sheds light on the mechanisms underlying the NC effect and is potentially useful for improving …
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Analysis and Design of Wide Tuning Range Low Phase Noise mm-wave LC-VCOs
… error rates (BERs). Due to the large parasitic capacitance and high losses in silicon based technologies, extending the tuning range and reducing phase noise is becoming very challenging. This dissertation studies and proposes novel architectures and circuit techniques to overcome the …
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Wireless, Battery-Free, High-Sensitivity 5G RF Energy Harvesters for Next Generation IoT Sensor Tags
… simulation results show that rectifiers using negative-capacitance field-effect transistors (NCFETs) can harvest up to four times as much power than their CMOS-based counterparts, while maintaining the same sensitivity. This thesis outlines the design, implementation, and evaluation of all …