Matching Items (88)
Description
How does the idea of the visible and invisible, tangible and intangible, interact with the garments on the body? Perception, to become aware through the sense, involves the way in which the eye sees space, both visible and invisible. The way in which we see objects are significant in our everyday life and how we evaluate it. The main pattern the garments encompass are the accordion pleating and the variety in which the pattern can be utilized; the accordion pleating can be scaled, attached together, and twisted around the body. Effervescence is a 6-look collection that entails the idea of perception. The results of the project include 3 completed looks, 3 3D print on fabric, and 8 3D print accessories. In this paper, I will explain the process of creating the collection, the experimentation, and the results.
ContributorsNguyen, Juliana (Author) / Mihaleva, Galina (Thesis director) / Stephenson, Kathy (Committee member) / Tevzadze, Irina (Committee member) / Barrett, The Honors College (Contributor) / School of Art (Contributor)
Created2022-05
ContributorsCampbell, Andrew (Pianist) (Performer) / McLin, Katherine (Performer) / Spring, Robert (Performer) / Schupp, Karen (Performer) / FitzPatrick, Carole (Performer) / Cosand, Walter, 1950- (Performer) / ASU Library. Music Library (Publisher)
Created2008-01-19
Description
Over the past few years, research into the use of doped diamond in electronics has seen an exponential growth. In the course of finding ways to reduce the contact resistivity, nanocarbon materials have been an interesting focus. In this work, the transfer length method (TLM) was used to investigate Ohmic contact properties using the tri-layer stack Ti/Pt/Au on nitrogen-doped n-type conducting nano-carbon (nanoC) layers grown on (100) diamond substrates. The nanocarbon material was characterized using Secondary Ion Mass Spectrometry (SIMS), Scanning electron Microscopy (SEM) X-ray diffraction (XRD), Raman scattering and Hall effect measurements to probe the materials characteristics. Room temperature electrical measurements were taken, and samples were annealed to observe changes in electrical conductivity. Low specific contact resistivity values of 8 x 10^-5 Ωcm^2 were achieved, which was almost two orders of magnitude lower than previously reported values. The results were attributed to the increased nitrogen incorporation, and the presence of electrically active defects which leads to an increase in conduction in the nanocarbon. Further a study of light phosphorus doped layers using similar methods with Ti/Pt/Au contacts again yielded a low contact resistivity of about 9.88 x 10^-2 Ωcm^2 which is an interesting prospect among lightly doped diamond films for applications in devices such as transistors. In addition, for the first time, hafnium was substituted for Ti in the contact stack (Hf/Pt/Au) and studied on nitrogen doped nanocarbon films, which resulted in low contact resistivity values on the order of 10^-2 Ωcm^2. The implications of the results were discussed, and recommendations for improving the experimental process was outlined. Lastly, a method for the selective area growth of nanocarbon was developed and studied and the results provided an insight into how different characterizations can be used to confirm the presence of the nanocrystalline diamond material, the limitations due to the film thickness was explored and ideas for future work was proposed.
ContributorsAmonoo, Evangeline Abena (Author) / Thornton, Trevor (Thesis advisor) / Alford, Terry L (Thesis advisor) / Anwar, Shahriar (Committee member) / Theodore, David (Committee member) / Arizona State University (Publisher)
Created2023
Description
Wide Bandgap (WBG) semiconductor materials are shaping day-to-day technologyby introducing powerful and more energy responsible devices. These materials have
opened the door for building basic semiconductor devices which are superior in terms of
handling high voltages, high currents, power, and temperature which is not possible using
conventional silicon technology. As the research continues in the field of WBG based
devices, there is a potential chance that the power electronics industry can save billions of
dollars deploying energy-efficient circuits in high power conversion electronics. Diamond,
silicon carbide and gallium nitride are the top three contenders among which diamond can
significantly outmatch others in a variety of properties. However, diamond technology is
still in its early phase of development and there are challenges involved in many aspects of
processing a successful integrated circuit. The work done in this research addresses three
major aspects of problems related to diamond technology. In the first part, the applicability
of compact modeling and Technology Computer-Aided Design (TCAD) modeling
technique for diamond Schottky p-i-n diodes has been demonstrated. The compact model
accurately predicts AC, DC and nonlinear behavior of the diode required for fast circuit
simulation. Secondly, achieving low resistance ohmic contact onto n-type diamond is one
of the major issues that is still an open research problem as it determines the performance
of high-power RF circuits and switching losses in power converters circuits. So, another
portion of this thesis demonstrates the achievement of very low resistance ohmic contact
(~ 10-4 Ω⋅cm2) onto n-type diamond using nano crystalline carbon interface layer. Using
the developed TCAD and compact models for low resistance contacts, circuit level
predictions show improvements in RF performance. Lastly, an initial study of breakdown
characteristics of diamond and cubic boron nitride heterostructure is presented. This study
serves as a first step for making future transistors using diamond and cubic boron nitride –
a very less explored material system in literature yet promising for extreme circuit
applications involving high power and temperature.
ContributorsJHA, VISHAL (Author) / Thornton, Trevor (Thesis advisor) / Goodnick, Stephen (Committee member) / Nemanich, Robert (Committee member) / Alford, Terry (Committee member) / Hoque, Mazhar (Committee member) / Arizona State University (Publisher)
Created2023
Description
An efficient thermal solver is available in the CMC that allows modeling self-heating in the electrical simulations, which treats phonons as flux and solves the energy balance equation to quantify thermal effects. Using this solver, thermal simulations were performed on GaN-HEMTs in order to test effect of gate architectures on the DC and RF performance of the device. A Π- gate geometry is found to suppress 19.75% more hot electrons corresponding to a DC power of 2.493 W/mm for Vgs = -0.6V (max transconductance) with respect to the initial T-gate. For the DC performance, the output current, Ids is nearly same for each device configuration over the entire bias range. For the RF performance, the current gain was evaluated over a frequency range 20 GHz to 120 GHz in each device for both thermal (including self-heating) and isothermal (without self-heating). The evaluated cutoff frequency is around 7% lower for the thermal case than the isothermal case. The simulated cutoff frequency closely follows the experimental cutoff frequency. The work was extended to the study of ultra-wide bandgap material (Diamond), where isotope effect causes major deterioration in thermal conductivity. In this case, bulk phonons are modeled as semiclassical particles solving the nonlinear Peierls - Boltzmann transport equation with a stochastic approach. Simulations were performed for 0.001% (ultra-pure), 0.1% and 1.07% isotope concentration (13C) of diamond, showing good agreement with the experimental values. Further investigation was performed on the effect of isotope on the dynamics of individual phonon branches, thermal conductivity and the mean free path, to identify the dominant phonon branch. Acoustic phonons are found to be the principal contributors to thermal conductivity across all isotope concentrations with transverse acoustic (TA2) branch is the dominant branch with a contribution of 40% at room temperature and 37% at 500K. Mean free path computations show the lower bound of device dimensions in order to obtain maximum thermal conductivity. At 300K, the lowest mean free path (which is attributed to Longitudinal Optical phonon) reduces from 24nm to 8 nm for isotope concentration of 0.001% and 1.07% respectively. Similarly, the maximum mean free path (which is attributed to Longitudinal Acoustic phonon) reduces from 4 µm to 3.1 µm, respectively, for the same isotope concentrations. Furthermore, PETSc (Portable, Extensible Toolkit for Scientific Computation) developed by Argonne National Lab, was included in the existing Cellular Monte Carlo device simulator as a Poisson solver to further extend the capability of the simulator. The validity of the solver was tested performing 2D and 3D simulations and the results were compared with the well-established multigrid Poisson solver.
ContributorsAcharjee, Joy (Author) / Saraniti, Marco (Thesis advisor) / Goodnick, Stephen (Committee member) / Thornton, Trevor (Committee member) / Wang, Robert (Committee member) / Arizona State University (Publisher)
Created2024
Description
Personal histories are deeply rooted into my way of existence, far before my brain became ready to challenge such notions. While Americans have been witnesses to the splintering effects of colonialism and patriarchy on socialization, I ask two questions: (1) Where to stand within a society that promotes the marginalization of both women and brown bodies? And (2) how to combat these harsh realities and protect those most affected?
Being both Black and woman, I decided to embark upon a quest of self-actualization in this document. “Ain’t She Sweet: A Critical Choreographic Study of Identity & Intersectionality,” tracks the creative process and concept design behind my applied project for the Master of Fine Arts in Dance. Developed in extensive rehearsals, community engagement, journaling processes, and lived experiences, the physical product, “Ain’t She Sweet,” explored concepts such as identity, socialization, oppression, decolonization, sexuality, and civil rights. The chapters within this document illustrate the depth of the research conducted to form the evening-length production and an analysis of the completed work.
Being both Black and woman, I decided to embark upon a quest of self-actualization in this document. “Ain’t She Sweet: A Critical Choreographic Study of Identity & Intersectionality,” tracks the creative process and concept design behind my applied project for the Master of Fine Arts in Dance. Developed in extensive rehearsals, community engagement, journaling processes, and lived experiences, the physical product, “Ain’t She Sweet,” explored concepts such as identity, socialization, oppression, decolonization, sexuality, and civil rights. The chapters within this document illustrate the depth of the research conducted to form the evening-length production and an analysis of the completed work.
ContributorsCarney, Laina Reese (Author) / Schupp, Karen (Thesis advisor) / Weitz, Rose (Committee member) / White, Marcus (Committee member) / Fitzgerald, Mary (Committee member) / Arizona State University (Publisher)
Created2019
Description
It’s Not That Simple: A Complex Journey of an MFA Applied Project discusses the experience of graduate student, Molly W. Schenck. Schenck’s applied project, It’s Not That Simple, was an interdisciplinary dance theatre performance piece that challenges rape culture on college campuses. While the focus of the applied project was this performance, it was the obstacles and highlights that were related to the project that made the journey memorable. This paper will discuss the history and evolution of It’s Not That Simple, the creative process, the research, the trajectory of the project, and reflections on the journey.
ContributorsSchenck, Molly W (Author) / Schupp, Karen (Thesis advisor) / Kaplan, Robert (Committee member) / Sterling, Pamela (Committee member) / Arizona State University (Publisher)
Created2016
Description
This document analyzes the use of the Principles of Design within the applied project It’s My Party, a multimedia dance theatre production, as a means to address and overcome the stigmatization of the Human Immunodeficiency Virus (HIV). Through the orchestration of dance, music, props, acting, video, and spoken word, this interdisciplinary work investigates how these production elements synthesize into a transformative theatrical experience for audiences. Outlined in this document is the eight month design process. The process included concept design, assessing, processing, customizing the message, script development, rehearsals, and video production, and concluded with an evening length production. Analyzed through the structural narrative of The Hero’s Journey, this autobiographic work details the author’s HIV-positive (HIV+) coming out story from a restorative narrative perspective. By addressing the subject of HIV from a contemporary point-of-view, this project strives to reencode the troubling associations affiliated with HIV with an empowered and hopeful understanding.
ContributorsAlvarez, Ricardo (Author) / Schupp, Karen (Thesis advisor) / Magenta, Muriel (Committee member) / Rajko, Jessica (Committee member) / Standley, Eileen (Committee member) / Arizona State University (Publisher)
Created2016
Description
In this work, the insight provided by our sophisticated Full Band Monte Carlo simulator is used to analyze the behavior of state-of-art devices like GaN High Electron Mobility Transistors and Hot Electron Transistors. Chapter 1 is dedicated to the description of the simulation tool used to obtain the results shown in this work. Moreover, a separate section is dedicated the set up of a procedure to validate to the tunneling algorithm recently implemented in the simulator. Chapter 2 introduces High Electron Mobility Transistors (HEMTs), state-of-art devices characterized by highly non linear transport phenomena that require the use of advanced simulation methods. The techniques for device modeling are described applied to a recent GaN-HEMT, and they are validated with experimental measurements. The main techniques characterization techniques are also described, including the original contribution provided by this work. Chapter 3 focuses on a popular technique to enhance HEMTs performance: the down-scaling of the device dimensions. In particular, this chapter is dedicated to lateral scaling and the calculation of a limiting cutoff frequency for a device of vanishing length. Finally, Chapter 4 and Chapter 5 describe the modeling of Hot Electron Transistors (HETs). The simulation approach is validated by matching the current characteristics with the experimental one before variations of the layouts are proposed to increase the current gain to values suitable for amplification. The frequency response of these layouts is calculated, and modeled by a small signal circuit. For this purpose, a method to directly calculate the capacitance is developed which provides a graphical picture of the capacitative phenomena that limit the frequency response in devices. In Chapter 5 the properties of the hot electrons are investigated for different injection energies, which are obtained by changing the layout of the emitter barrier. Moreover, the large signal characterization of the HET is shown for different layouts, where the collector barrier was scaled.
ContributorsSoligo, Riccardo (Author) / Saraniti, Marco (Thesis advisor) / Goodnick, Stephen M (Committee member) / Chowdhury, Srabanti (Committee member) / Thornton, Trevor (Committee member) / Arizona State University (Publisher)
Created2016
Description
This document outlines the formation and development of Worth the Weight, or WTW, a platform that seeks to sustain the Breaking community in Phoenix, Arizona and connect the generations by bringing them together in a newly and never before seen event in Breaking, an all weight class and division competition. In the last five to ten years there has been a noticeable decline in the local Breaking community, in part due to the introduction of new dance categories, economic and social changes, the cross over of academia and traditional studios in Phoenix; all combining to create a lack of longevity in veterans of the culture to pass on the tools of the trade to the next generation.
WTW is an event that occurs monthly for three consecutive months followed by a month off, totaling nine events and three seasons per calendar year. At each event dancers go head to head in battle in a single elimination style bracket, where they will add a loss or win to their overall season record. The goals of WTW are self-empowerment as well as ownership and investment in the community by those involved through participation in both the event and the planning process; all built on a foundation of trust within the Breaking community. This researcher has thirty years of direct involvement in the Breaking culture with twenty-two of those years as a practitioner in Phoenix, Arizona and co-founder of Furious Styles Crew, Arizona’s longest running Breaking crew. The development of WTW was drawn from this experience along with interviews and observations of Breaking communities worldwide. WTW intends to provide a reliable and consistent outlet during a time of instant gratification, allowing a space for self-discovery and the development of tools to be applied beyond movement. It is hoped that the format of WTW will be a model that can be adapted by other Breaking communities worldwide.
WTW is an event that occurs monthly for three consecutive months followed by a month off, totaling nine events and three seasons per calendar year. At each event dancers go head to head in battle in a single elimination style bracket, where they will add a loss or win to their overall season record. The goals of WTW are self-empowerment as well as ownership and investment in the community by those involved through participation in both the event and the planning process; all built on a foundation of trust within the Breaking community. This researcher has thirty years of direct involvement in the Breaking culture with twenty-two of those years as a practitioner in Phoenix, Arizona and co-founder of Furious Styles Crew, Arizona’s longest running Breaking crew. The development of WTW was drawn from this experience along with interviews and observations of Breaking communities worldwide. WTW intends to provide a reliable and consistent outlet during a time of instant gratification, allowing a space for self-discovery and the development of tools to be applied beyond movement. It is hoped that the format of WTW will be a model that can be adapted by other Breaking communities worldwide.
ContributorsMagaña, Jorge Edson (Author) / Vissicaro, Pegge (Thesis advisor) / Schupp, Karen (Committee member) / Gabbert, Kenneth (Committee member) / Arizona State University (Publisher)
Created2015