Search Constraints

Start Over
Filtering by: Creator Chang, Xiao Lan Remove constraint Creator: Chang, Xiao Lan Degree Field Chemical Engineering Remove constraint Degree Field: Chemical Engineering

Search Results

  • Inkjet-Printed Metal Halide Semiconductors for Wearable Electronics

    Creator:
    Li, Shujie
    Abstract:
    There is an emerging interest in developing wearable electronics as a platform, which provides the flexibility of a wearable while maintaining its promising functionality as smart textiles. Metal-halide semiconductors are attractive materials with tunable optical and electrical properties. Researchers have widely studied and applied it for advanced photonics and optoelectronic...
    Resource Type:
    Dissertation
    Full Text:
    approved: ______________________________________________________ Chih-Hung Chang There is an

  • Novel Interfacial Syntheses of Covalent Organic Frameworks

    Creator:
    Liu, Ziyan
    Abstract:
    Covalent organic frameworks (COFs) are an emerging type of microporous crystalline polymers connected by organic units via strong covalent bonds. Due to the well-defined crystalline structure and excellent chemical and thermal stabilities, COF materials are being considered as promising candidates in a variety of applications, such as gas adsorption, catalysis...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Chih-hung Chang Covalent organic frameworks (COFs) are an emerging type of

  • Low-Cost Light Trapping Layer via Melting Gel and Hot Embossing Technique

    Creator:
    Xu, Han
    Abstract:
    Light trapping plays a phenomenal role in enhancing light confinement and light absorption within the solar cells, thus increasing the optical efficiency of the cell. Different strategies are employed for trapping light photons within the cell. Methods used include a substrate or single layer texturing, light trapping coating, plasmonic gratings,...
    Resource Type:
    Masters Thesis
    Full Text:
    : ____________________________________ Chih-hung, Chang Light trapping plays a

  • Formation of Cu₂ZnSnS₄ Thin Films via Reactive Sintering of Binary Metal-Sulfide Nanoparticles Using Intense Pulsed Light

    Creator:
    Zeng, Cheng
    Abstract:
    Copper zinc tin sulfide (CZTS) is a potential solar material for thin film solar cells according to its suitable band gap in the visible light range, high absorption coefficient, low toxicity, good photostability and relative earth abundance of component elements. However, the production cost of this solar thin film material...
    Resource Type:
    Masters Thesis
    Full Text:
    Chih-hung Chang Copper zinc tin sulfide (CZTS) is a potential solar material for thin film

  • Continuous flow synthesis of lead sulfide and copper indium diselenide nanocrystals

    Creator:
    Knapp, Michael W.
    Abstract:
    The use of size and shape tunable quantum confinement nanocrystals has many potential applications for use in semiconductors, optics and sensors. The synthesis of lead sulfide (PbS) and copper indium diselenide (CuInSe₂) nanoparticles are of particular interest for use in semiconductor, optoelectronics and bio-medical applications. The continuous synthesis of lead...
    Resource Type:
    Masters Thesis
    Full Text:
    Diselenide Nanocrystals Abstract approved: Chih-Hung Chang The use of size and shape tunable

  • Fabrication of Biological Pigment Nanowires by Inkjet Printing

    Creator:
    Cao, Yu
    Abstract:
    Digital inkjet printing is developing quickly today because inkjet printing processes consume less energy and water and produce less waste discharge than traditional dyeing and other printing technologies. Inkjet printing provides more versatility and flexibility in terms of printing patterns and colors. Natural pigments are gaining more attention today as...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Chih-hung Chang Digital inkjet printing is developing quickly today because inkjet

  • Growth, characterizations and applications of copper sulfide thin films by solution-based processes

    Creator:
    Vas-Umnuay, Paravee
    Abstract:
    Copper sulfides (Cu[subscript x]S) are compound semiconductor materials that exhibit considerable optical and electrical properties varying significantly as a function of the composition. Copper sulfide thin films can be used in many applications, such as solar control coatings, solar cells, photothermal conversion of solar energy, electroconductive coatings, and microwave shielding...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________ Chih-Hung Chang Copper sulfides (CuxS) are compound semiconductor materials that

  • Classifying the toxicity of pesticides to honey bees via support vector machines with random walk graph kernels

    Creator:
    Yang, Ping
    Abstract:
    Pesticides benefit agriculture by increasing crop yield, quality, and security. However, pesticides may inadvertently harm bees, which are valuable as pollinators. Thus, candidate pesticides in development pipelines must be assessed for toxicity to bees. Leveraging a data set of 382 molecules with toxicity labels from honey bee exposure experiments, we...
    Resource Type:
    Masters Thesis
    Full Text:
    Chang for being my committee member and giving valuable suggestions and feedback for my thesis and

  • Effect of cosputtered catalyst on growth and alignment of carbon nanotubes by plasma enhanced chemical vapor deposition

    Creator:
    Gunderson, Eric P.
    Abstract:
    The effect of cosputtered catalyst on growth and alignment of carbon nanotubes (CNTs) grown by plasma enhanced chemical vapor deposition (PECVD) was investigated. Aligned CNTs were observed using a cosputtered catalytic metal deposited directly on boro-aluminosilicate glass. Catalytic metal alloys were sputtered directly onto the substrate using magnetron sputtering. Deposition...
    Resource Type:
    Masters Thesis

  • Method development for characterizing the hydrophobicity of engineered nanoparticles

    Creator:
    Lee, Fang Yu
    Abstract:
    Characterizing the hydrophobicity of nanoparticles can help us understand their fate and transport in the environment, as well as how nanoparticles may interact with biological systems. However, contact angle and partition coefficient have limitations in measuring the hydrophobicity of nanoparticles, thus promising methods to measuring the hydrophobicity of nanoparticles are...
    Resource Type:
    Masters Thesis
    Full Text:
    . Chih-hung Chang, Dr. Adam Higgins and Dr. Oksana Ostroverkhova for accepting my invitation to serve

  • An in silico Approach to Determine the Influence of Surface Chemical Properties on the Toxicity of Engineered Zinc Oxide Nanoparticles

    Creator:
    Zhou, Zitao
    Abstract:
    Nanotechnology products have long since made their way to markets around the world increasing the concerns about whether nanomaterials pose a risk to our environment or health. It has been suggested that engineered nanomaterial (ENM) with broad applications and rapid commercialization need better risk assessment and regulation. However, the refinement...
    Resource Type:
    Masters Thesis
    Full Text:
    and Toxicological Methods 2014, 69 (2), 115-140. 19. Buerki-Thurnherr, T.; Xiao, L.; Diener, L

  • Characterization of CoGe Thin Films and Powders

    Creator:
    Pfau, Andrew James
    Abstract:
    Cobalt germanides have been widely studied as semiconductor contact materials, but recent theoretical studies suggest that they may also be excellent catalysts for methane steam reforming with stabilities and activities comparable to noble metal catalysts. In order to study the catalytic activity of cobalt germanides, it is critical to first...
    Resource Type:
    Masters Thesis
    Full Text:
     difference to me.  Dr. Chih‐Hung Chang has also been a long‐time supporter of mine, allowing me a  research

  • Design Principles of Transition Metal X-ide Catalysts for Electrochemical Oxygen Reduction and Evolution Reactions: In-Situ X-ray Spectroscopy Studies

    Creator:
    Wang, Maoyu
    Abstract:
    Hydrogen is the green fuel that can be produced from water through electrolysis and used via hydrogen fuel cells to generate electricity with zero carbon dioxide emission. The commercialization of electrolyzers and fuel cells is the critical step to achieving global carbon neutrality. However, it is severely hampered by the...
    Resource Type:
    Dissertation
    Full Text:
    , Prof. Líney Árnadóttir, Prof. Chih-hung Chang, Prof. Gregory S. Herman, and Prof. Liu Hong. Thank you

  • Continuous Flow Microwave-Assisted Synthesis as a Potentially Scalable Nanomanufacturing Approach

    Creator:
    Albuquerque, Gustavo Henrique T. C. de
    Abstract:
    The development of nanomaterials and the potential enhancement of their chemical, mechanical, electrical, and optical properties have led to the investigation of methods for their synthesis at lower cost with enhanced performance for next generation devices. Along with the pursuit of new materials that exhibit properties of interest, industry requires...
    Resource Type:
    Dissertation
    Full Text:
    a lot of influence from Professors Chang, Herman, Feng, and Koretsky. I am really grateful for all

  • Predicting the Effect of Local Conditions on Metal-oxides: Pt/γ-Al₂O₃ Interface and Degradation of α-Cr₂O₃ Passive Film

    Creator:
    Oware Sarfo, Kofi
    Abstract:
    Metal-oxides are very important in industrial applications such as thermal barrier coatings, corrosion protection, and heterogeneous catalysis. The wide variety of applications for metal-oxides are derived from the array of properties of metal-oxides. It is, therefore, important to understand and predict the conditions of synthesis and operation to optimize the...
    Resource Type:
    Dissertation
    Full Text:
    -hung Chang, Kyle Niemeyer. Thank you to all my research group colleagues, past and present who have

  • Metal Oxide Cluster Chemistries for Next Generation Nanomanufacturing

    Creator:
    Frederick, Ryan T.
    Abstract:
    Metal oxide clusters are promising inorganic photoresists in next generation nanomanufacturing because of their potential for high-resolution and low line-edge roughness patterning, and exceptional sensitivity to extreme ultraviolet (EUV) radiation. In EUV patterning, absorption of EUV radiation leads to electron emission that serve as a primary species for driving radiation...
    Resource Type:
    Dissertation
    Full Text:
    facilitating this award. I am very grateful to my committee, Chih-Hung Chang, Líney Árnadóttir, Joe Baio

  • Controlling the Co-Precipitation of Colloidal PbSe Quantum Dots and Their Device Performance in a Diode Architecture

    Creator:
    McCrea, Tyler D.
    Abstract:
    In this work, colloidal PbSe quantum dots (QDs) are shown to be synthesized in a controlled manner by changing the growth time and reaction temperature in a microwave synthesis method. It is explained why quantum dots make such a unique material to create electronic devices and the specific benefits that...
    Resource Type:
    Masters Thesis
    Full Text:
    Chang research group for assisting me on this project. It will be a pleasure to continue working

  • Applications of Nonthermal Microplasmas in Chemical Reaction Engineering

    Creator:
    Kreider, Peter B.
    Abstract:
    Nonthermal plasmas generate high concentrations of excited species that can simultaneously exist at high energy and far from thermodynamic equilibrium, making them useful tools in chemistry and engineering. Microplasmas, roughly defined as plasmas that are generated within sub-millimeter dimensions, provide enhanced stability, improved excited species density, increased nonequilibrium properties, higher...
    Resource Type:
    Dissertation
    Full Text:
    support has and will continue to unlock. I’d also like to thank my co-adviser, Chih-Hung Chang. I truly

  • Understanding And Improving The Activity Of Oxygen Evolution Reaction Catalysts In Alkaline And Chloride-Containing Electrolytes

    Creator:
    Adiga, Prajwal Prakash
    Abstract:
    Water electrolysis plays a pivotal role in achieving a green hydrogen economy by sourcing electricity from intermittent renewable sources. However, the efficiency of the electrolysis process is limited by the sluggish oxygen evolution reaction (OER) kinetics, whereas the kinetics of the hydrogen evolution reaction (HER) are more facile. This thesis...
    Resource Type:
    Dissertation
    Full Text:
    , Dr. Chih Hung Chang, and Dr. Burkan Isgor for supporting me through this journey of working towards

  • Nonthermal Plasma Microreaction Engineering for Gas and Liquid Processing

    Creator:
    Pommerenck, Justin
    Abstract:
    Atmospheric pressure plasma is non-thermal at millimeter to micrometer separations. It represents an alternative low exergy initiator of many chemical reactions. In many instances heat, light or sound are not efficient providers of the necessary energy to overcome chemical activation barriers. The focus of this research is applying dc nonthermal...
    Resource Type:
    Dissertation