recently published patent, page-4

In some instances, such as the star discussed above, it may be desired to attach an LED to the top portion of the joined leaves and SMA strip. This LED will become illuminated when the bending actuator is activated. This adds to the aesthetic appeal of the star for use as decoration on a Christmas tree, door, desk, table, etc

0017]To achieve larger movement, one skilled in the art will recognize that smaller leaves and SMA strips can be stacked in between larger leaves and SMA strips forcing larger, more amplified movements of the bending actuator.

- perhaps this is the technology re: the Android article a couple of months back by PDT