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  • Quantum dot plasmon coupling : Fundamental study and applications

    Creator:
    Kannegulla, Akash
    Abstract:
    The dissertation focuses on the engineering of light-matter interaction using plasmonic nanoparticles and metamaterials to achieve enhanced luminescence and based on which to improve the performance of biosensing and light-emitting technologies. We designed and fabricated a spectrum of nanostructures to exhibit particular dispersion relations capable of controlling the spontaneous emission...
    Resource Type:
    Dissertation
    Full Text:
    Professor Alan X. Wang, Professor Chih-Hung Chang, Professor Matthew Johnston, Professor John Labram and

  • Transition Metal Oxides for Aqueous Electrochemical Energy Storage

    Creator:
    Jiang, Heng
    Abstract:
    In the 21st century, environmental deterioration is now an indisputable fact. Reliable and economically viable electricity systems based on renewable sources are urgently needed to replace the environmentally detrimental fossil fuels. The feasibility of incorporating renewable-but-intermittent solar and wind energy heavily depends on the development of cost-effective and safe technologies,...
    Resource Type:
    Dissertation
    Full Text:
    throughout my Ph.D. studies. I am also grateful to Dr. Chih-hung Chang for being my GCR member to help me

  • Life Cycle Assessments for Wastewater Treatment and the Feasibility Study of Microbial Fuel Cell Technology

    Creator:
    Chien, Ku-Huan
    Abstract:
    The thesis documents research about combining the National Pollutant Discharge Elimination System (NPDES) Permit Program with the Impact 2002+ methodology to conduct a Life Cycle Assessment (LCA) for wastewater treatment processes. The LCA for the operational phase of a local wastewater treatment plant was performed and the environmental impacts caused...
    Resource Type:
    Masters Thesis
    Full Text:
    Chang as well as my Graduate Council Representative Dr. Rebecca A. Hutchinson for letting me do

  • 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

  • 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

  • Formation of hybrid supramolecular assemblies using biological molecules and transition metals

    Creator:
    Smith, Rachelle M. S.
    Abstract:
    Naturally occurring assemblies, such as DNA and proteins, utilize intermolecular forces (i.e H-bonding and van der Waals) to assemble. Utilizing these electrostatic interactions has only just started in the past five decades to be a tool used in synthetic chemistry in what is known as supramolecular chemistry. Supramolecular chemistry has...
    Resource Type:
    Dissertation

  • 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

  • Fabrication and application of polymer based microfluidic devices

    Creator:
    Koesdjojo, Myra T.
    Abstract:
    The concept of reducing laboratory operations in scale such that they fit on a microfluidic chip has been met with great enthusiasm. Lab-on-a-chip devices promise to be cost effective to operate due to reduced reagent consumption, have the potential to offer shorter analysis times due to their short path lengths,...
    Resource Type:
    Dissertation
    Full Text:
    to Dr. Chih-hung Chang, Dr. Claudia Maier, Dr. David Hackleman, and Dr. Michael Penner, for their

  • Detection techniques for biomolecules using semi-conductor nanocrystals and magnetic beads as labels

    Creator:
    Chatterjee, Esha
    Abstract:
    Continued interest in the development of miniaturized and portable analytical platforms necessitates the exploration of sensitive methods for the detection of trace analytes. Nanomaterials, on account of their unique physical and chemical properties, are not only able to overcome many limitations of traditional detection reagents but also enable the exploration...
    Resource Type:
    Dissertation
    Full Text:
    . Michael Lerner, Dr. Chih-hung (Alex) Chang, Dr. Neal Sleszynski and Dr. Michael Qian, members of my

  • Magnetic particles for selective extraction of trace analytes in microfluidic devices

    Creator:
    Tennico, Yolanda H.
    Abstract:
    The development of micro total analysis systems (µTAS), also called “lab-on-a-chip”, or microfluidic analysis systems, is presented in this dissertation. Various research areas, covering subjects from magnetic particles synthesis to novel microchip fabrication techniques, are explored to develop a lab-on-a-chip system capable of performing magnetic bead-based bioassays. These devices are...
    Resource Type:
    Dissertation
    Full Text:
    -hung (Alex) Chang, Dr. Michael Lerner, Dr. Alexey Shvarev, and Dr. Alena Paulenova, for their

  • Electrical Conductivity in Mixed-Species Biofilms for Enhancing Energy Generation in Anaerobic Microbial Systems

    Creator:
    Li, Cheng
    Abstract:
    Further enhancement of energy generation is desired for practical application of anaerobic microbial systems such as microbial fuel cells (MFC) and anaerobic digesters (AD). A possible approach is to enhance the ability of microbial communities to transfer electron extracellularly in the form of electrical current. Critical to perform direct extracellular...
    Resource Type:
    Dissertation
    Full Text:
    committee members Dr. Alex Chang, Dr. Frank Chaplen, Dr. Mark Dolan, Dr. Kaichang Li, who encouraged me

  • 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

  • Femtosecond Stimulated Raman Studies of Excited State Structural Events

    Creator:
    Tang, Longteng
    Abstract:
    Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational technique which allows rapid collection of Raman spectra with simultaneously high temporal and spectral resolution. With the recent development of FSRS methodology, three FSRS techniques (conventional, tunable, and anti-Stokes) have been implemented in our laboratory to dissect the excited state structural...
    Resource Type:
    Dissertation
    Full Text:
    thank Professor Michael Lerner, Professor Yun-Shik Lee and Professor Chih-hung Chang for severing on

  • 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

  • Additive Manufacturing of Oxide Dispersion Strengthened Alloys via Laser Powder Bed Fusion

    Creator:
    Ghayoor Baghbani, Seyyed Milad
    Abstract:
    Having a series of excellent properties, the oxide dispersion-strengthened (ODS) steels provide promising solutions for the challenges of structural materials in nuclear energy, especially the development of future advanced nuclear fission and even fusion reactors. The current manufacturing route for ODS alloys includes mechanical alloying (MA) of master alloys or...
    Resource Type:
    Dissertation
    Full Text:
    . Chih-hung Chang, Dr. Julie Tucker, and Dr. Wei Kong for their constant support and guidance during

  • Synthesis of Intercalation Compounds and Nanocomposites of Inorganic Layered Hosts

    Creator:
    Liyanage, Medagama Liyanage Amila Udayanga
    Abstract:
    Novel synthetic strategies are developed to prepare new intercalation compounds and nanocomposites with several layered hosts (NiPS₃, Na-montmorillonite, MoS₂ and MoO₃). In these products, alkali metals are ionic intercalates and linear polymers, dendrimers or amines act as co-intercalates. In addition to new synthetic approaches, new structures are identified and characterized....
    Resource Type:
    Dissertation
    Full Text:
    . Keszler, MAS Subramanian, Vincent T. Remcho, and Chih-hung (Alex) Chang for serving on my graduate

  • Electronic Stability of Metal Halide Perovskites

    Creator:
    Hong, Min Ji
    Abstract:
    Despite near unanimous opinion on the consequences of climate change by scientific community, the rate at which carbon is emitted into the atmosphere continues to increase. The need for a clean and sustainable source of energy is therefore one of humankind's most urgent challenges. Solar energy is the most abundant...
    Resource Type:
    Dissertation
    Full Text:
    -Hung Chang, Dr Li-Jing (Larry) Cheng, Dr John Conley and Dr Douglas Keszler for serving as my