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TitleMicrostructured materials - Propagation and use for impedance matching
Publication TypeConference Paper
Year of Publication2009
AuthorsHarris, P.D., Young R., Dawson A., Petherick R., and Lecarpentier F.
Conference NameProceedings - IEEE Ultrasonics Symposium
Date Published2009
KeywordsImpedance, Impedance matching (electric), Impedance matchings, Low loss, Microstructure, Microstructured materials, Nano-porous, Nanoporous structures, Porous materials, Ultrasonics, Wave scattering
AbstractThis work considers the use of nano-porous materials as a means of providing impedance matching. A comparison is made to conventional loaded epoxy. We find that by varying the porosity an impedance range of 2 to 10 MRayl seems possible, a range where there are no common solids. The nano-porous structure acts as a waveguide with low losses. By comparison loaded epoxies have high absorption due to the wave scattering associated with the loading particles. ©2009 IEEE.

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