Nano Letters, vol. 9, no. 2, page. 738 - 744, 2009-02
Journal of Micromechanics and Microengineering, vol. 17, no. 9, page. S237 - S242, 2007-09
Journal of Microelectromechanical Systems, vol. 15, no. 4, page. 976 - 985, 2006-08
Science, vol. 312, no. 5776, page. 1034 - 1037, 2006-05-19