Kubo, Masahiro, Xiaofeng Li, Choongik Kim, Michinao Hashimoto, Benjamin J. Wiley, Donhee Ham, and George M. Whitesides. 2010. “Stretchable Microfluidic Radiofrequency Antennas.” Advanced Materials 22 (25) (April 22): 2749–2752. doi:10.1002/adma.200904201.
Highly stretchable and robust antennas are fabricated by injecting liquid metal into a microfluidic channel that consists of two types of silicone rubber with different stiffness. The resulting antennas exhibit high mechanical stability under strain, while retaining high stretchability; these antennas can be stretched by up to a tensile strain of 120% with little degradation in radiation efficiency.