7.Because their molecules can shift their crosslinks around on the fly, the materials are stretchy, can repair themselves quickly, can dissipate excess energy, and are usually soft.
8.Those crosslinks are generally also formed from covalent bonds, which are interactions where atoms share electrons and generally require a chemical reaction to make or break.
9.(Applause) So what we had to do was figure out a way to put a sensor, connected to this crosslinks of the stent that could record that brain activity.