A bionic ear that is designed by scientists of Princeton University can hear with more capabilities than humans and it is basically designed by using 3D printer technique. According to these researchers they have used 3D printed cells and nano particles and combined a small coiled antenna with cartilage to design it. It is also being said that this technology may some day design human body organs. 3D printers have a vast field of applications if implemented under budget cost and may be this technology ease human life ahead but research is being carried out to cut the implementation cost.