2024 WSU Annual CGRS Abstracts

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    Exploring nonlinear optical materials: Synthesis, enhancement, and comparative analysis of noncentrosymmetric structures
    (Wichita State University, 2024-03-21) Ji, Bingheng; Wang, Jian
    Nonlinear optical (NLO) materials play a critical role in various technological applications owing to their unique optical properties. For practical applications, several basic conditions should be satisfied for the NLO materials, including suitable bandgap, large NLO coefficient, high LDT, and moderate birefringence, as well as good crystal growth habits. A critical aspect of synthesizing IR NLO materials lies in achieving a noncentrosymmetric crystal structure. A case study of two compounds with high structural similarity emphasizes the significance of noncentrosymmetric structures. The enhancement of second harmonic generation (SHG) in NLO materials through a case study of isostructural compounds with different transition metals will be discussed. Furthermore, in a comparative analysis of isostructural compounds, variations in these properties emerge. This investigation elucidates the intricate relationship between doped compounds based on parent NLO compound Ba6Cu4Sn4S16 and their physical properties, providing valuable insights into optimizing the performance of NLO materials.
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    Simulating detector flights of the NASA NIAC νSOL solar orbiting neutrino detector to constrain solar models
    (Wichita State University, 2024-03-21) Folkerts, Jonathan; Solomey, Nickolas
    The νSOL project is working towards building a space-based neutrino detector orbiting close to the sun. Neutrinos are sub-atomic particles that are the product of fusion inside the sun. Unlike the helium, light, and other particles produced during fusion, neutrinos are very weakly-interacting. Neutrinos directly escape the sun without interacting, unlike photons which can take thousands of years to escape the sun's core. By studying neutrinos, we can explore fundamental physics and unanswered questions about the universe. The weakly-interacting nature of neutrinos provides a unique window into the sun's core. Through this window is the largest fusion reactor in the solar system. Studying the sun's fusion could provide insights into fusion reactors here. This work focuses on simulating the signals that the spacecraft might be able to measure during its solar orbit. I use the results from the Standard Solar Model (SSM), and from those I calculate the number of neutrinos from each of the neutrino-producing fusion processes in the sun. I put a simulated detector in an orbit around the sun, and at each time step I calculate the fraction of a neutrino that could be measured. Using random number generation to simulate real detection, I determine if a neutrino has been measured at that point in the orbit. I take the results from a simulated mission to calculate how many total neutrinos there were, and use that to calculate the luminosity of the sun. This luminosity constraint can then be input to a modified version of the SSM.
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    Application of polymer derived ceramics for 3D printing thermal management systems
    (Wichita State University, 2024-03-21) Mathur, Saket Chand; Bishop, Victoria; Wei, Wei; Sharma, Bhisham N.
    Manufacturing parts with complex geometry which are mechanically stable at high temperatures for different applications is challenging problem in the aerospace industry. A class of materials which has potential in this application are called Polymer Derived Ceramics (PDCs). These PDCs are made by heat treatment of silicon-based polymers such as polysiloxanes which produce Silicon OxyCarbides. These ceramics can be tuned to have specific mechanical, thermal or electrical properties along with good shape fidelity based on formulation of the polymer and the filler material used. Additive manufacturing or 3D printing the complex structures using Direct Ink Writing allows us to print parts with tuneable properties based on the fillers used in the feedstock, using equipment and methods that differ only a little from the more established Fused Deposition Modelling (FDM) printers that people are more familiar with. To establish predictive models on the printability of the feedstock and it's accuracy in generating the desired structure, our work currently focuses on developing relationships between printing parameters and the resulting printed object.
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    Blood glucose regulation using Type 1 fuzzy controller
    (Wichita State University, 2024-03-21) Thakur, Priyanka; Pillay, Yrithu; Watkins, John Michael; Sawan, M. Edwin
    Maintaining blood glucose levels (BGL) within a safe range is vital for optimal health, directly affecting energy production and cellular function. Stable levels support cognitive function, and sustained energy, as well as prevent cardiovascular and neurological issues. Understanding blood glucose control is important, especially for diabetic patients who cannot naturally maintain stable glucose levels to stay healthy. In Kansas, where diabetes ranks as the 7th leading cause of death and approximately 1 in 9 adults have the condition, along with 11.7% diagnosed with prediabetes, blood glucose regulation is paramount. This study focuses on regulating blood glucose levels and maintaining it in the safe range of 70 to 180 mg/dL, using a closed-loop control strategy with a Mamdani Type-1 fuzzy logic controller. The effectiveness of the proposed controller was tested for three test scenarios. The first test case investigated the performance of the controller on a severe case of a hyperglycemic Type-1 diabetic patient (BGL > 180 mg/dL). The second test case examined how well the controller performed on a diabetic patient with normal blood glucose levels while being subjected to a very high meal disturbance i.e., a high carbohydrate meal. The third test case explored the functioning of the controller where a Type-1 diabetic patient experiencing hyperglycemia (BGL > 180 mg/dL) is subjected to a heightened meal disturbance. The simulation results demonstrated consistent effectiveness across all scenarios. The simulated results are presented and discussed.
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    Ultrasonic guided electrospun conductive nanofibers for bioengineering and advanced manufacturing
    (Wichita State University, 2024-03-21) Sack, Richard; Hakansson, Nils A.; Asmatulu, Ramazan
    Electrospinning is an effective method to produce nanoscale fibers used in biomedical devices, filters, water treatment, electronics, and composites. Current technology cannot effectively control the trajectory and spin of fibers as they are formed between the polymer source and collection plate. Moreover, the fibers spun must be non-conductive, which severely limits the number of potential applications. This research focused on overcoming these limitations and developing an innovative approach to the fabrication of conductive nanofibers through the integration of electrospinning and novel ultrasonic phased arrays. A phased array of ultrasonic transducers produces acoustic holograms to precisely guide electrospun fibers toward the collection plate. A prototype ultrasonic assisted electrospinning device has been assembled and tested. The device guided fibers by acoustic forces and deposited them in specified locations on the collection plate. Ongoing research involves the introduction of higher frequency transducers, larger acoustic arrays with various geometries, and innovative collection plate designs. Test results have laid the foundation for future work, with a clear trajectory toward creating multifunctional conductive nanofibers. This work represents a significant advancement in nanofiber fabrication techniques, opening avenues for continued research and innovation into tissue engineering and sensors for biomedical applications, aircraft lightning protection and stealth, and terahertz antennas for 6G communication technologies.