This 3-D-printed artificial heart actually beats http://www.cnn.com/2017/07/20/health/3-d-printed-heart-silicone-study/index.html A heart of gold may be hard to find, but a heart of silicone may be within reach. Engineers at ETH Zurich used 3-D printing to make a soft, artificial heart made of the implantable material, according to research published last week in the journal Artificial Organs.