There is a video of an antenna made from shape memory alloy. The video is given here: http://shelf3d.com/RGDufoVQ7hg#Chiral%20shape%20memory%20alloy%20antenna. The antenna is seen below:
This auxetic shape was achieved using shape memory polymer, as well. Jonathan Rossiter and collaborators at the University of Bristol, have created the chiral structure. An image below describes how the auxetic structure works:
The structured made from the shape memory polymer is given below:
Incorporating a structure like this one might be useful for my purposes.
1. Rossiter, J. et. al., Shape Memory Polymer Hexachiral Structures with Tunable Stiffness. Smart Materials and Structures. 23 (2014).