
Engineers are expanding the portfolio of 3-D printing technology to include microelectronics and integrated wireless sensors. To show that their system worked, they created a ‘smart cap’ to monitor the freshness of milk.img src=»http://feeds.feedburner.com/~r/sciencedaily/~4/nxNRFnYajqU» height=»1″ width=»1″ alt=»»/
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