studied physics at the Federal University of Rio de Janeiro, Brazil, where he obtained his M.Sc. degree for an investigation of the optical properties of metal transition ions in compounds with an inverse spinel structure. From 1986 to 1991 he was a Research Fellow at the laboratories of the Institute of Research and Development (IPD) of the Brazilian Army. During that period his main fields of interest were radiometry, design of infrared lens systems, and optical characterization of materials for electronics and metallurgy. In 1992 he joined the Laboratory of Acoustic Microscopy (LMAM) in Montpellier, France, where he is studying acoustic propagation phenomena in monolayer and multilayer structures and preparing his Ph.D. thesis.
Scanning Acoustic Microscopy—recent applications in materials science
Article first published online: 29 OCT 2004
Copyright © 1993 Verlag GmbH & Co. KGaA, Weinheim
Volume 5, Issue 7-8, pages 508–519, July/August 1993
How to Cite
da Fonseca, R. J. M., Ferdj-Allah, L., Despaux, G., Boudour, A., Robert, L. and Attal, J. (1993), Scanning Acoustic Microscopy—recent applications in materials science. Adv. Mater., 5: 508–519. doi: 10.1002/adma.19930050703
- Issue published online: 29 OCT 2004
- Article first published online: 29 OCT 2004
- Manuscript Received: 26 FEB 1993
A convergent beam of ultrasonic waves at very high frequencies can be used in an acoustic microscope to achieve resolutions of the order of 1 μm at depths of up to 1 mm. One application of the acoustic microscope are welding tests (e.g. the Figure which shows an Si/Mo structure welded at 475°C).