Title :
Collinear composite materials for impedance matching
Author :
Harris, P. ; Wu, D. ; Thomson, M. ; Petherick, R. ; Lecarpentier, F. ; Chen, H.
Author_Institution :
Ind. Res. Ltd., Lower Hutt, New Zealand
Abstract :
This work extends our study of highly collinear composites to use nanorod materials as a means of providing impedance matching. We have fabricated nanorod (300nm diameter 0.5mm length) materials having high regularity (diameter and spacing) that are highly collinear (rods continuous from face to face of the sample). A comparison is made to conventional loaded epoxy. We find in experimental work that for the nanorod material there was no observable transmission frequency dependence up to 120MHz, by comparison we find loaded epoxy is very sensitive to frequency.
Keywords :
alumina; filled polymers; impedance matching; nanocomposites; nanofabrication; nanoporous materials; nanorods; resins; Al2O3; collinear composite materials; conventional loaded epoxy; impedance matching; nanorod materials; porous alumina; size 0.5 mm; size 300 nm; transmission frequency dependence; Absorption; Acoustics; Face; Impedance; Powders; Solids; impedance; nanoporous; nanorod;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0483