I have always been fascinated by concocted materials that serve special functions. I believe many of them offer priceless benefits to the world. The invention of vulcanized rubber, for instance, made it possible for things like tires and shoe soles to have the properties and functions they possess. Recently, there was a report published pertaining to the creation of a bacteria-killing, polymer coating.
It might seem strange that the first technology I am highlighting is not something many would consider a technology, exactly. It isn't even human-made or even a physical thing that you can touch or see. However, I find it really fascinating and think that it can be very useful for the world. Probably now more than ever. Knowledge of it can aid in the advancement of human technology.