Abstract
Phononic bandgaps of Parylene-C microfibrous thin films (s) were computationally determined by treating them as phononic crystals comprising identical microfibers arranged either on a square or a hexagonal lattice. The microfibers could be columnar, chevronic, or helical in shape, and the host medium could be either water or air. All bandgaps were observed to lie in the 0.01–162.9-MHz regime, for microfibers of realistically chosen dimensions. The upper limit of the frequency of bandgaps was the highest for the columnar and the lowest for the chiral . More bandgaps exist when the host medium is water than air. Complete bandgaps were observed for the columnar with microfibers arranged on a hexagonal lattice in air, the chevronic with microfibers arranged on a square lattice in water, and the chiral with microfibers arranged on a hexagonal lattice in either air or water. The softness of the Parylene-C s makes them mechanically tunable, and their bandgaps can be exploited in multiband ultrasonic filters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
