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Acoustic hologram guided electrospinning
Sack, Richard
Sack, Richard
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t24029_Sack.pdf
Adobe PDF, 10.08 MB
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2024-05
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Electrospinning is an effective method to produce nanoscale fibers; however, the trajectory of fibers cannot be effectively controlled between the polymer source and ground plate. The resulting deposition of these fibers cannot be easily controlled and charged conductive fibers must avoid the ground plate. We demonstrate a novel system integrating acoustic holograms produced by a phased array of ultrasonic transducers to control the trajectory of electrospun nanofibers. The combination of electrospinning and acoustic holograms has not been found in academic research literature. Multiple designs were developed and tested until a final design produced the desired results. Fiber trajectories were controlled to deposit fibers in a specific location on the collection plate which correlated with simulations. Preliminary results also indicate that acoustic holograms improve fiber morphology at high flow rates by reducing the number of beads. These results lay a groundwork for subsequent work to improve the production speed of nanofibers, improve fiber morphology, efficiently produce highly aligned fibers, produce nanofiber yarns, and produce highly conductive nanofibers. This work is intended to open avenues for continued research and industrial nanofiber production. Future work research involves the introduction of higher frequency transducers, larger arrays, different transducer arrangements, and new ground plate designs.
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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Biomedical Engineering
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Wichita State University
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© Copyright 2024 by Richard Sack
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