Microscale 3-D Printing that mixes inks with living cells to semiconductors and have already formed a complex network of blood vessels which is key...
Jennifer Lewis, a materials scientist at Harvard University, is developing the chemistry and machines to make that possible. She prints intricately shaped objects from “the ground up,” precisely adding materials that are useful for their mechanical properties, electrical conductivity, or optical traits. This means 3-D printing technology could make objects that sense and respond to their environment. “Integrating form and function,” she says, “is the next big thing that needs to happen in 3-D printing.”
Last year, Lewis and her students showed they could print the microscopic electrodes and other components needed for tiny lithium-ion batteries. Other projects include printed sensors fabricated on plastic patches that athletes could one day wear to detect concussions and measure violent impacts. Most recently, her group printed biological tissue interwoven with a complex network of blood vessels. To do this, the researchers had to make inks out of various types of cells and the materials that form the matrix supporting them. The work addresses one of the lingering challenges in creating artificial organs for drug testing or, someday, for use as replacement parts: how to create a vascular system to keep the cells alive.
Top: Inks made of silver nanoparticles are used to print electrodes as small as a few micrometers.
Bottom: As in the other 3-D printing processes, the operation is controlled and monitored by computers.
Source: http://nextbigfuture.com/2014/04/microscale-3-d-printing-that-mixes-inks.html
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