The advent of three-dimensional (3D) printing has generated a swell of interest in artificial organs meant to replace, or even enhance, human machinery. Printed organs, such as a prototype outer ear developed by researchers at Princeton University in New Jersey and Johns Hopkins University in Baltimore, Maryland, will be on the agenda at the Inside 3D Printing conference in New York on 15-17 April. The ear is printed from a range of materials: a hydrogel to form an ear-shaped scaffold, cells that will grow to form cartilage, and silver nanoparticles to form an antenna (M. S. Mannoor et al. Nano Lett. 13,2634-2639; 2013). The device is just one example of the increasing versatility of 3D printing.
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机译：三维（3D）打印的出现已引起人们对替代或什至增强人类机械的人造器官的兴趣。印刷器官，例如新泽西普林斯顿大学和马里兰州巴尔的摩的约翰霍普金斯大学研究人员开发的外耳原型，将在4月15日至17日在纽约举行的Inside 3D Printing会议上被提上议事日程。耳朵是用多种材料印制的：水凝胶形成耳形支架，细胞将生长形成软骨，银纳米颗粒形成天线（MS Mannoor等人，Nano Lett。13,2634-2639； 2013）。该设备只是3D打印多功能性不断提高的一个例子。
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