Browse Dissertations and Theses - Electrical and Computer Engineering by Contributor "Ravaioli, Umberto"

• (2012-06-27)
The simultaneous explosion of portable microelectronics devices and the rapid shrinking of microprocessor size have provided a tremendous motivation to scientists and engineers to continue the down-scaling of these devices. ...

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• (2019-04-17)
As logic devices are nearing their physical scaling limit, many new materials and novel device-operation concepts have been proposed lately. Among the most promising candidates, two-dimensional (2D) materials-based tunnel ...

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• (1998)
The number of iterations required is not dependent on the size of the grid. This method is O(kN), where k is the number of eigenvalues desired and N is the number of grid points. Any subset of the eigenvalue spectrum can ...

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• (2010-01-06)
High work function metals--Ni, Pt, Ir, and Au--were comparatively studied as Schottky metallizations to GaN and AlGaN/GaN heterostructures. Ni/Au, Ni/Pt/Au, Ir/Au, Ir/Pt/Au and Pt/Au Schottky diodes were fabricated on GaN ...

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• (2012-02-01)
We introduce a particle{particle{particle{mesh (P3M) method modi ed by a simple yet accurate numerical reference force, which solves the ambiguity of the original P3M method by e ectively eliminating double-counting of ...

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• (2015-02-16)
This dissertation examines several of the current limitations and barriers to integration of graphene into scalable nanoelectronic devices, primarily defects from wafer-scale graphene synthesis, graphene-substrate interactions, ...

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• (2020-05-06)
Recently, there has been significant interest in exploring the potential in novel Ga-V materials for temperature-resilient and power electronics applications. These materials are based on mature and well-studied semiconductors, ...

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• (2015-01-21)
Two-dimensional (2D) materials and devices such as graphene and MoS2 are of interest from a fundamental point of view, as well as for their practical applications in nanoelectronics. The role of interfaces and imperfections ...

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• (2018-05-31)
When the speed of the particle is much less than the speed of light, non-relativistic classical mechanics faithfully describes the motion of the particle. Analogously, using wave-particle duality, the non-relativistic ...

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• (2008)
A full-band 3D Monte Carlo semiconductor simulator is enhanced in two ways in order to capture realistic transport properties in nanoscale device simulations. First of all, the phonon-limited multisubband scattering ...

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• (1994)
A Monte Carlo simulator for silicon devices has been developed. The band structure data for this self-consistent device simulator were computed using the empirical pseudopotential method. The ensemble Monte Carlo technique ...

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• (1996)
A full-band Monte Carlo device simulator has been used to study the effects of device scaling on hot electrons in different types of n-channel MOSFETs and flash memory structures. A MOSFET with a single source/drain implant, ...

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• (2018-07-10)
Undergraduate engineering programs in the United States suffer from high rates of attrition. To develop the knowledge base that can inform efforts to reduce attrition rates, I conducted three studies focused on helping ...

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• (2014-01-16)
This dissertation improves the synthesis, functionalization (i.e., fluorination), and transfer of graphene and hexagonal boron nitride (h-BN). Further, this document explores new avenues in the large-area, heterogeneous ...

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• (1994)
The performance of high-power graded index separate confinement heterostructure single quantum well lasers grown by molecular beam epitaxy depends primarily on the quality of $Al\sb{x}Ga\sb{1-x}As$ layers, the interface ...

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• (2010-05-14)
Several methodologies are presented in this work to facilitate the modeling of electromagnetic fields in the context of multi-domain physical interactions. Among the challenges for computer aided analysis of electromagnetic ...

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• (2009-06-01)
This work presents methodologies to facilitate the efficient cosimulation of electromagnetic/circuit systems while exploiting the multiple time scales that are often present in the numerical simulation of such systems. ...

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• (2013-05-24)
Vertical-cavity surface-emitting lasers (VCSELs) are currently the most popular light source for short-haul optical data communication primarily due to their low cost and low operating power. To address the needs for ...

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• (2013-08-22)
This thesis introduces a Monte Carlo simulation of intrinsic electronic noise in MOSFETs. Brief reviews of the important aspects of carrier transport, band structure, and Monte Carlo technique are discussed. Based on full ...

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• (2005)
This dissertation discusses the transport Monte Carlo model and its application for simulation of semiconductor devices and biological ion channels. A quantum corrected 3-D Monte Carlo simulator has been developed to ...

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