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Soft robots currently rely on additional hardware such as pumps, high voltage supplies,light generation sources, and magnetic field generators for their operation. These components resist miniaturization; thus, embedding them into small-scale soft robots is challenging. This issue limits their applications, especially in hyper-redundant mobile robots. This dissertation aims at addressing some of the

Soft robots currently rely on additional hardware such as pumps, high voltage supplies,light generation sources, and magnetic field generators for their operation. These components resist miniaturization; thus, embedding them into small-scale soft robots is challenging. This issue limits their applications, especially in hyper-redundant mobile robots. This dissertation aims at addressing some of the challenges associated with creating miniature, untethered soft robots that can function without any attachment to external power supplies or receiving any control signals from outside sources. This goal is accomplished by introducing a soft active material and a manufacturing method that together, facilitate the miniaturization of soft robots and effectively supports their autonomous, mobile operation without any connection to outside equipment or human intervention. The soft active material presented here is a hydrogel based on a polymer called poly(Nisopropylacrylamide) (PNIPAAm). This hydrogel responds to changes in the temperature and responds by expanding or contracting. A major challenge regarding PNIPAAm-based hydrogels is their slow response. This challenge is addressed by introducing a mixedsolvent photo-polymerization technique that alters the pore structure of the hydrogel and facilitates the water transport and thus the rate of volume change. Using this technique, the re-swelling response time of hydrogels is reduced to 2:4min – over 25 times faster than hydrogels demonstrated previously. The material properties of hydrogels including their response rate and Young’s modulus are tuned simultaneously. The one-step photopolymerization using UV light is performed in under 15 sec, which is a significant improvement over thermo-polymerization, which takes anywhere between a few minutes to several hours. Photopolymerization is key towards simplifying recipes, improving access to these techniques, and making them tractable for iterative design processes. To address the manufacturing challenges, soft voxel actuators (SVAs) are presented. SVAs are actuated by electrical currents through Joule heating. SVAs weighing only 100 mg require small footprint microcontrollers for their operation which can be embedded in the robotic system. The advantages of hydrogel-based SVAs are demonstrated through different robotic platforms namely a hyper-redundant manipulator with 16 SVAs, an untethered miniature robot for mobile underwater applications using 8 SVAs, and a gripper using 32 SVAs.
ContributorsKhodambashi, Roozbeh (Author) / Aukes, Daniel (Thesis advisor) / Sugar, Thomas (Committee member) / Nam, Changho (Committee member) / Arizona State University (Publisher)
Created2021
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Description
Atmospheric water extraction (AWE) is an emerging technology to tackle water resource shortage challenges. One such approach to provide fresh water utilizes stimuli-responsive hydrogel-based desiccants to capture the moisture from the air and release it into the liquid form. Typical gel desiccants are composed of a hygroscopic agent for capturing

Atmospheric water extraction (AWE) is an emerging technology to tackle water resource shortage challenges. One such approach to provide fresh water utilizes stimuli-responsive hydrogel-based desiccants to capture the moisture from the air and release it into the liquid form. Typical gel desiccants are composed of a hygroscopic agent for capturing and a hydrophilic gel matrix for storage. The desorption process can be completed by elevating the temperature above the upper or lower critical solution temperature point to initiate the volume phase transition of either thermo-responsive or photothermal types. This thesis focuses on investigating the structural effect of hydrogels on moisture uptake. Firstly, the main matrix of gel desiccant, poly(N-isopropylacrylamide) hydrogel, was optimized via tuning synthesis temperature and initial monomer concentration. Secondly, a series of hydrogel-based desiccants consisting of a hygroscopic material, vinyl imidazole, and optimized poly(N-isopropylacrylamide) gel matrix were synthesized with different network structures. The moisture uptake result showed that the gel desiccant with an interpenetrating polymeric network (IPN) resulted in the best-performing moisture capturing. The gel desiccant with the best performance will be used as a primary structural unit to evaluate the feasibility of developing a light-responsive gel desiccant to materialize light-trigger moisture desorption for AWE technology in the future.
ContributorsZhao, Xingbang (Author) / Dai, Lenore (Thesis advisor) / Westerhoff, Paul (Committee member) / Jiao, Yang (Committee member) / Arizona State University (Publisher)
Created2021
Description

For my thesis I chose to complete a creative project. This project was to start my very own vocal studio as a vocal instructor. I began by researching different business components, such as, policies, contracts, pricing, websites, etc. I then used this research to form my own policies, contracts and

For my thesis I chose to complete a creative project. This project was to start my very own vocal studio as a vocal instructor. I began by researching different business components, such as, policies, contracts, pricing, websites, etc. I then used this research to form my own policies, contracts and social pages. I also took a survey of vocal students at ASU, with IRB approval, that covered what they have liked or disliked bout past and urgent vocal lessons, any advice they had fr me, and different singing techniques that they found to be helpful. After completing this I recruited students and began teaching. Half way through teaching I surveyed my sunsets, with IRB approval to find out what they enjoyed or disliked about lessons and then repeated this survey at the end to see if improvement was made. I followed this up with a survey and a summary of everything learned and discussed.

ContributorsMcallister, Marisa (Author) / Weiss, Stephanie (Thesis director) / DeMaris, Amanda (Committee member) / Barrett, The Honors College (Contributor) / School of Music, Dance and Theatre (Contributor)
Created2021-12
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Description

"Calico" takes a look at the Japanese art form of "Manga" and what makes it stand out from similar art forms seen in the west such as comic books and graphic novels. After researching art techniques and the history leading up to modern manga practices, "Calico" summarizes it all together

"Calico" takes a look at the Japanese art form of "Manga" and what makes it stand out from similar art forms seen in the west such as comic books and graphic novels. After researching art techniques and the history leading up to modern manga practices, "Calico" summarizes it all together in the form of a manga itself. The story of "Calico" uses manga art techniques to tell the story of a young girl who finds solace in a street cat following the death of her mother.

ContributorsRamirez Cordero, Andrea (Author) / Boyce-Jacino, Katherine (Thesis director) / Deacon, Deborah (Committee member) / Barrett, The Honors College (Contributor) / School of Art (Contributor)
Created2021-12
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Description

For my creative project thesis, I have designed and developed a video game called Amity Academy. Amity Academy is a strategic resource management simulator that aims to subvert genre expectations and challenge generally accepted definitions of success and leadership both in-game and in the real world. It does so by

For my creative project thesis, I have designed and developed a video game called Amity Academy. Amity Academy is a strategic resource management simulator that aims to subvert genre expectations and challenge generally accepted definitions of success and leadership both in-game and in the real world. It does so by moving the focus away from amassing large amounts of in-game currencies and becoming politically or militarily dominant towards caring for the denizens of the social unit the player controls. The player acts as an administrator at a school where they must make decisions on how to best run the institution. Although they are allowed to lead the school however they see fit, the emphasis is on prioritizing strong interpersonal and intracommunity relationships and connections and the wellbeing and happiness of those under their ward. Amity Academy is also part of the newly-emerging “wholesome” or “comfy” game genre. Unlike serious strategy games that can be stressful, Amity Academy presents a self-paced, low-stakes situation. This mood is further encouraged by calming environmental noises and music, a gentle color palette, and a charming art style. The game feels domestic and quaint, almost reminiscent of a Jane Wooster Scott or Mary Singleton painting. You can download and play Amity Academy here: https://mvaughn8.itch.io/amity-academy

ContributorsVaughn, Meghan (Author) / Kobayashi, Yoshihiro (Thesis director) / Holmes, Jeffrey (Committee member) / Barrett, The Honors College (Contributor) / Computing and Informatics Program (Contributor) / Computer Science and Engineering Program (Contributor)
Created2021-12
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Description
In this dissertation, I described my research on the growth and characterization of various nanostructures, such as nanowires, nanobelts and nanosheets, of different semiconductors in a Chemical Vapor Deposition (CVD) system.

In the first part of my research, I selected chalcogenides (such as CdS and CdSe) for a comprehensive study

In this dissertation, I described my research on the growth and characterization of various nanostructures, such as nanowires, nanobelts and nanosheets, of different semiconductors in a Chemical Vapor Deposition (CVD) system.

In the first part of my research, I selected chalcogenides (such as CdS and CdSe) for a comprehensive study in growing two-segment axial nanowires and radial nanobelts/sheets using the ternary CdSxSe1-x alloys. I demonstrated simultaneous red (from CdSe-rich) and green (from CdS-rich) light emission from a single monolithic heterostructure with a maximum wavelength separation of 160 nm. I also demonstrated the first simultaneous two-color lasing from a single nanosheet heterostructure with a wavelength separation of 91 nm under sufficiently strong pumping power.

In the second part, I considered several combinations of source materials with different growth methods in order to extend the spectral coverage of previously demonstrated structures towards shorter wavelengths to achieve full-color emissions. I achieved this with the growth of multisegment heterostructure nanosheets (MSHNs), using ZnS and CdSe chalcogenides, via our novel growth method. By utilizing this method, I demonstrated the first growth of ZnCdSSe MSHNs with an overall lattice mismatch of 6.6%, emitting red, green and blue light simultaneously, in a single furnace run using a simple CVD system. The key to this growth method is the dual ion exchange process which converts nanosheets rich in CdSe to nanosheets rich in ZnS, demonstrated for the first time in this work. Tri-chromatic white light emission with different correlated color temperature values was achieved under different growth conditions. We demonstrated multicolor (191 nm total wavelength separation) laser from a single monolithic semiconductor nanostructure for the first time. Due to the difficulties associated with growing semiconductor materials of differing composition on a given substrate using traditional planar epitaxial technology, our nanostructures and growth method are very promising for various device applications, including but not limited to: illumination, multicolor displays, photodetectors, spectrometers and monolithic multicolor lasers.
ContributorsTurkdogan, Sunay (Author) / Ning, Cun Zheng (Thesis advisor) / Palais, Joseph C. (Committee member) / Yu, Hongbin (Committee member) / Mardinly, A. John (Committee member) / Arizona State University (Publisher)
Created2015
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Description
Tin (Sn) has a high-specific capacity (993 mAhg-1) as an anode material for Li-ion batteries. To overcome the poor cycling performance issue caused by its large volume expansion and pulverization during the charging and discharging process, many researchers put efforts into it. Most of the strategies are through nanostructured material

Tin (Sn) has a high-specific capacity (993 mAhg-1) as an anode material for Li-ion batteries. To overcome the poor cycling performance issue caused by its large volume expansion and pulverization during the charging and discharging process, many researchers put efforts into it. Most of the strategies are through nanostructured material design and introducing conductive polymer binders that serve as matrix of the active material in anode. This thesis aims for developing a novel method for preparing the anode to improve the capacity retention rate. This would require the anode to have high electrical conductivity, high ionic conductivity, and good mechanical properties, especially elasticity. Here the incorporation of a conducting polymer and a conductive hydrogel in Sn-based anodes using a one-step electrochemical deposition via a 3-electrode cell method is reported: the Sn particles and conductive component can be electrochemically synthesized and simultaneously deposited into a hybrid thin film onto the working electrode directly forming the anode. A well-defined three dimensional network structure consisting of Sn nanoparticles coated by conducting polymers is achieved. Such a conductive polymer-hydrogel network has multiple advantageous features: meshporous polymeric structure can offer the pathway for lithium ion transfer between the anode and electrolyte; the continuous electrically conductive polypyrrole network, with the electrostatic interaction with elastic, porous hydrogel, poly (2-acrylamido-2-methyl-1-propanesulfonic acid-co-acrylonitrile) (PAMPS) as both the crosslinker and doping anion for polypyrrole (PPy) can decrease the volume expansion by creating porous scaffold and softening the system itself. Furthermore, by increasing the amount of PAMPS and creating an interval can improve the cycling performance, resulting in improved capacity retention about 80% after 20 cycles, compared with only 54% of that of the control sample without PAMPS. The cycle is performed under current of 0.1 C.
ContributorsGao, Tianxiang (Author) / He, Ximin (Thesis advisor) / Sieradzki, Karl (Committee member) / Chan, Candace (Committee member) / Arizona State University (Publisher)
Created2015
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Description

The clothing and textile industry is often referred to as one of the largest polluters in the world. Over the last two decades, global annual consumption has increased, and the volume of discarded clothing in America has doubled from 7 to 14 million tons a year (Shirvanimoghaddam, 2020). Over 60%

The clothing and textile industry is often referred to as one of the largest polluters in the world. Over the last two decades, global annual consumption has increased, and the volume of discarded clothing in America has doubled from 7 to 14 million tons a year (Shirvanimoghaddam, 2020). Over 60% of textile waste overall is exported to the Global South. In the Global South, landfills that receive this waste often lack proper funding and legislation to implement effective waste management systems (Schiros). Textile waste bears a carbon and water footprint that disrupts environmental and health standards on egregious levels, disproportionately harming the health of the populations situated near to those disposal sites, and preventing so-called “developing populations” from economic independence and from sustaining critical environmental health standards. The exploitation of the Global South as a dumping ground also erodes the possibility of economic development by local production and economic self-reliance. Structural adjustments and trade regulated by the ‘developed’ country subjugate the Global South to neo-colonialist, exploitative economic partnerships with the Global North. Rwanda is one example of a country attempting to rise to the World Bank’s classification as a middle-income country, but has been accused of trading human rights for development in the process.

My investigation first seeks to answer, What are the specific health threats of post-consumer textiles? I consider the human health impacts of textiles from cultivation to disposal. This study examines the role of waste as a potential function in the production process, where waste is not considered a negative economic value. My second question is How is the Global South's participation in international collaboration empowered by acts of resistance against the assumptions, research, and policies that suggest Western aid and medicine is superior and the basis for innovative technology? Acts of resistance are pursued within the public sphere (especially in terms of community building and art making), low technology, and locally situated science (that consider the culture, approach, and resources of the Global South before scaling up to the North). Corporations and state policy are considered to expand research, but the focus is largely on acts of resistance by the public, and acts of resistance at a community-level of cooperation. Through the framework of the zine, audiences can better understand the relationship between the US and countries in the East African Community, in South Africa, in shared regions. This creative project informs and challenges the reader to think critically about their role in a postcolonial context. I seek to understand how colonialism pervades the economic relationship and import-export business today between the Global North and the Global South. My purpose is to provide the reader with a vision that suggests the most critical changes that should be made to secure humane and environmentally sustainable solutions. It also serves as a catalyst for additional research on the Global South.

ContributorsJimenez, Leilani (Author) / Davis, Olga (Thesis director) / Ripley, Charles (Committee member) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
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Description

https://www.youtube.com/watch?v=5osMYze5138

In January 2020, the World Health Organization (WHO) declared the outbreak of the novel SARS-CoV-2, otherwise referred to as COVID-19, to be an international pandemic. Ensuing health regulations around the world forced the cease of international traveling, reduced domestic travel, implemented mandatory stay-at-home orders and asked many to wear face

https://www.youtube.com/watch?v=5osMYze5138

In January 2020, the World Health Organization (WHO) declared the outbreak of the novel SARS-CoV-2, otherwise referred to as COVID-19, to be an international pandemic. Ensuing health regulations around the world forced the cease of international traveling, reduced domestic travel, implemented mandatory stay-at-home orders and asked many to wear face masks in public areas. Students, workers, and many in the public sphere switched from in-person interactions to online platforms, operating remotely from their respective homes. The shift to virtual platforms has since greatly impacted arts programs and professions. Whereas the nature of music and art production rely upon the collaboration between people, often in the same room, the forced shift to virtual platforms created an upheaval for artists to re-imagine their work.

Though the transition from in-person to virtual collaboration seemed abrupt and unwanted, it opened up opportunities to create new projects that otherwise may not have happened. “Cross-Disciplinary Arts Collaboration on a Virtual Platform” took advantage of the ubiquitous shift to virtual collaboration of art disciplines. This project combined poetry, music, dance and visual art to create a unique piece that might not have been possible through strictly in-person collaboration. The goal of this project was to amplify the meaning and impact of music through the addition of words (poetry), movement (dance), and visuals (artwork).

ContributorsBuringrud, Deanna (Author) / Buck, Elizabeth (Thesis director) / Swoboda, Deanna (Committee member) / School of Music (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
For my Barrett Thesis Project, I completed a total rewrite of the feature-length screenplay I wrote for my Herberger Senior Project. This process constituted completing a full analysis of my original work with my Thesis Director and Second Reader, discussing character motivation, thematic throughlines, story logic, and realism in dialogue.

For my Barrett Thesis Project, I completed a total rewrite of the feature-length screenplay I wrote for my Herberger Senior Project. This process constituted completing a full analysis of my original work with my Thesis Director and Second Reader, discussing character motivation, thematic throughlines, story logic, and realism in dialogue. This initial analysis caused me to almost entirely rewrite the original script, adjusting dialogue, sequences of events, pacing and character work.
The majority of this rewrite was spent on fine-tuning character and motivation, strengthening them in some cases and changing them entirely in others. I really strove to emphasize the relationships they had with each other and how the situations and connections affected the state of mind, therefore leading to the chain of events that happened in the script in a much more natural way. I also worked to emphasize certain story elements that benefited the characters and thematic content, specifically my protagonist’s struggle with schizophrenia. In this draft, I turned that character trait into a visual element, which I believe further heightened the visual and emotional stakes of the story and gave the characters an increased sense of motivation and struggle. In this draft I also worked to break down the stereotype connected with my secondary protagonist, a sex worker. Instead of emphasizing her strength and beauty, as many action films with a strong/sexualized woman in a supporting role do, I adjusted her story arc to break her stereotype (and her character) down throughout the story. I wanted to depict her as a person with flaws that extend beyond her choice of profession, though the latter certainly did not help. I believe that the final product succeeds in both main goals.
While working on this rewrite, I also completed a script edit journal that detailed the significant changes in action, pacing or dialogue I made and what my reasoning was behind them.
ContributorsFlake, Peyton Lee (Author) / Giner, Oscar (Thesis director) / Yatso, Toby (Committee member) / School of Film, Dance and Theatre (Contributor) / Barrett, The Honors College (Contributor)
Created2019-12