Fortunato, E., Nuno Correia, Pedro Barquinha, Cláudia Costa, Lu\'?s Pereira, Gonçalo Gonçalves, and Rodrigo Martins. "{Paper field effect transistor}." Eds. Ferechteh H. Teherani, Cole W. Litton, and David J. Rogers. Vol. 7217. 2009. 72170K?11.