Last years the degradable materials and products in general, become more popular as the need of the universal market for green products growing continuously. It's usual, every time that new products are available in the markets, to observed a misunderstanding of the different types of these materials (because of various reasons -ignorance, reckless, etc.). A typical example is the confusion of hydro-degradable polymers with the bio-degradable ones. That’s why, many times, some scientists mention the BIO-degradable polymers (starch-based - corn starch / potato / rice, etc.-) as hydro-degradable.
Shape Memory Alloys are materials that can expand or contract according to temperature variations and then return to their previous form. A group of researchers from Texas University, under prof. Othon Rediniotis, is exploring the possible use of these materials in order to build small ships that can move silently and without leaving wake traces.