@article {1185566, title = {Directly embroidered microtubes for fluid transport in wearable applications}, journal = {Lab on a Chip}, number = {9}, year = {2017}, abstract = {We demonstrate, for the first time, a facile and low-cost approach for integrating highly flexible and stretchable microfluidic channels into textile-based substrates. The integration of the microfluidics is accomplished by means of directly embroidering surface-functionalized micro-tubing in a zigzag/meander pattern and subsequently coating it with an elastomer for irreversible bonding. We show the utility of the embroidered micro-tubing by developing robust and stretchable drug-delivery and electronic devices. Controlled drug-delivery platforms with sustained release are achieved through selected laser ablated openings. We further demonstrate a wearable wireless resonant displacement sensor capable of detecting strains ranging from 0 to 60\% with an average sensitivity of 45 kHz per \% strain by filling the embroidered tubing with a liquid metal alloy, creating stretchable conductive microfluidics with \<0.4 Ω resistance variations at their maximum stretchability (100\%). The interconnects can withstand 1500 repeated stretch-and-release cycles at 30\% strain with a less than 0.1 Ω change in resistance.}, author = {Rahim Rahimi and Wuyang Yu and Manuel Ochoa and Babak Ziaie} }