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Download PDF by Gabriel M. Crean, Colm M. Flannery, Séan Cian Ó Mathúna: Advances in Acoustic Microscopy

By Gabriel M. Crean, Colm M. Flannery, Séan Cian Ó Mathúna (auth.), Andrew Briggs (eds.)

ISBN-10: 1461357624

ISBN-13: 9781461357629

ISBN-10: 1461518733

ISBN-13: 9781461518730

In 1992 Acoustic Microscopy used to be released by way of Oxford college Press, within the sequence of Monographs at the Physics and Chemistry of fabrics. stories seemed within the magazine of Microscopy [169 (1), ninety one] and in modern Physics [33 (4), 296]. on the time of going to press, it appeared that the sector of acoustic microscopy had settled down from the glorious advancements in answer that were visible within the overdue seventies and the early eighties and from the no much less fascinating advancements in quantitative elastic measurements that had undefined. One reviewer wrote, "The time is ripe for one of these e-book, now that the growth of the topic has perceptively slowed after it used to be detonated by means of Lemons and Quate. " [A. Howie, Proc. RMS 27 (4), 280]. in lots of methods, this continues to be precise. the fundamental layout for either imaging and quantitative tools is well-established; the higher frequency for regimen imaging is the two GHz verified by way of the Ernst Leitz scanning acoustic microscope (ELSAM) in 1984. For the main actual V(z) measurements, the 225-MHz line-focus-beam lens, built at Tohoku Univer­ sity a bit ahead of then, continues to be general. the rules of the distinction concept were proven by means of ample event; specifically the position of floor acoustic waves, akin to Rayleigh waves, dominates the distinction in so much excessive­ solution reviews of many materials.

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N ' r 11 1\ . '< B ...... ....... \ } ,v . 1"" j \ j V ~ . V ....... 42. Reflected acoustic pulse echo train from a TAB tape through a polyimide surface; Peak A is from the tape surface and Peak B from the polyimide-glue-copper interface. The acoustic frequence was 100 MHz. 36 G. M. CREAN, ET Al. 43. An acoustic micrograph of 35-mm TAB tape focused at a polyimide- glue-<:opper interface. A IOO-MHz acoustic el ns was employed. The white arrow indicates a large number of void. 44. A 12 x 9 mm close up acoustic micrograph of 35-mm TAB tape detailing largescale voiding.

6 describes acoustic microscopy analysis of high-density interconnection integrity on thin film and high-density organic substrates. Because of the high costs and short time frames involved in developing new packaging and interconnection materials, technologies and systems, access to predictive design tools is importanty~·I') These design tools are required to undertake system design for all aspects of the system performance, including electrical, thermal, mechanical, and environmental specifications and package or system reliability.

ACOUSTIC MICROSCOPY ANAL YSIS OF MICROELECTRONIC TECHNOLOGIES 25 shaped voids. At the bottom of the micrograph, shapes of three voids are visible, again black due to scattering. An optical micrograph of this sample is presented in Fig. 30. The linear, horizontal voids are quite distinct; die-attach patterns and the edge profiles of the die attach are visible. The analysis of the acoustic micrographs in Figs. 29 are consistent with these optical data. It is clear that the mottled die attach is present to a larger extent between parallel linear voids, explaining the presence of additional dark spots in the acoustic micrograph in Fig.

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Advances in Acoustic Microscopy by Gabriel M. Crean, Colm M. Flannery, Séan Cian Ó Mathúna (auth.), Andrew Briggs (eds.)

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