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Microscale self-assembly using molten alloys with different melting points
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10.1116/1.2978395
/content/avs/journal/jvstb/26/6/10.1116/1.2978395
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/26/6/10.1116/1.2978395
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic showing the dual alloy fluidic self-assembly process. The template schematic shows contact pads and interconnects for self-assembled solder contact characterization.

Image of FIG. 2.
FIG. 2.

Template fabrication process.

Image of FIG. 3.
FIG. 3.

Completed templates.

Image of FIG. 4.
FIG. 4.

Completed parts. “Sites” refer to those intended for binding to specific alloy regions on the template in Fig. 3.

Image of FIG. 5.
FIG. 5.

Details of template solder alloy heights. (A) Optical image and scanning electron microscope image showing the side view of a deposited Bi–Sn solder “bump.” (B) Surface evolver model and experimental data for Bi–Sn height with the dashed line showing model predictions for assembled part height. Details of the template height. (C) Surface evolver model for predictions of the Pb–Sn solder alloy height before and after reflow with scanning electron microscope images showing side views of Pb–Sn features on templates.

Image of FIG. 6.
FIG. 6.

Parts self-assembled on a template showing two types of defects. In many cases, intended Pb–Sn binding sites on the parts have assembled on Bi–Sn areas. The other type of defect in this image is that excessive tilt has prevented electrical contact on one side of an otherwise properly aligned part.

Image of FIG. 7.
FIG. 7.

Scanning electron microscope images showing self-assembled electrical connections.

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/content/avs/journal/jvstb/26/6/10.1116/1.2978395
2008-12-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microscale self-assembly using molten alloys with different melting points
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/26/6/10.1116/1.2978395
10.1116/1.2978395
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