Devices and methods of making devices having one or more components made of single crystal shape memory alloy capable of large recoverable distortions, defined herein as “hyperelastic” SMA. Recoverable Strains are as large as 9 percent, and in special circumstances as large as 22 percent. Hyperelastic...http://www.google.co.uk/patents/US7544257?utm_source=gb-gplus-sharePatent US7544257 - Single crystal shape memory alloy devices and methods