摘要:Scientific Reports 3 , Article number: 2476 10.1038/srep02476 ( 2013 ); Published: 21 August 2012 ; Updated: 22 November 2013 There is a typographical error in Figure 7 of this Article. “Hertzian curve (Eq. 3)” should read “Hertzian curve (Eq. 5)”. The correct Figure 7 appears below as Figure 1.