Stretchable Silicon has been reported as one of " 10 cool technologies you have never heard of" :http://www.pcmag.com/article2/0,1895,1988185,00.asp
Applications of stretchable silicon can be revolutionary ,such as in smart clothes which serve as body armor or in surgeons gloves that act as sensors. Researchers at Univeristy of Illinois, Urbana Champaign, lead by John Rogers have done extensive work on stretchable silicon. The idea here is that ultrathin silicon is flexible. The transistors are first fabricated using conventional techniques, and then using special etching procedures, the silicon is removed and deposited onto stretched rubber. When the rubber snaps back, the silicon ribbon forms an accordian like structure, that can stretch back and forth.
The citation below, discusses the fabrication of thin film transistors on plastic substrates using silicon ribbons. Electron mobilities were found to approach traditional transistors on bulk silicon, which is much larger than organic conductors.
High-speed mechanically flexible single-crystal silicon thin-film transistors on plastic substrates
Jong-Hyun Ahn; Hoon-Sik Kim; Keon Jae Lee; Zhengtao Zhu; Menard, E.; Nuzzo, R.G.; Rogers, J.A. IEEE Electron Device Letters June 2006, vol.27, no.6, pp. 460-2