Now a researcher group led by chemist Terry Steele at Nanyang Technology University (NTU) in Singapore has developed a glue that hardens when a low voltage is applied to it. It’s hardness is incredibly adjustable: joining materials immersed in water or replacing sutures during surgery in human tissue. It will also make recycling much more easier. Cars could be designed in such a way that their components could become unglued & easily disassembled. Most importantly for medical applications the glue will be more rubber-like and wouldn’t cause any damage to the surrounding soft tissues.