1. Bond energy effects on strength, cooperativity and robustness of molecular structures by Chia-Ching Chou, and Markus J. Buehler Interface Focus Volume ():rsfs20110038 July 27, 2011 ©2011 by The Royal Society

2. Geometry and loading condition of the molecular cluster. Chia-Ching Chou, and Markus J. Buehler Interface Focus doi:10.1098/rsfs.2011.0038 ©2011 by The Royal Society

3. Dependence of the strength on the number of bonds in the cluster, for varied bond energies Eb. The strength increase as N ≤ Ncr, where N is number of bonds. Chia-Ching Chou, and Markus J. Buehler Interface Focus doi:10.1098/rsfs.2011.0038 ©2011 by The Royal Society

4. Cooperativity index Ncr as a function of Eb, L0 and ξp.We plot the cooperativity index Ncr as a function of Eb and L0 (a,b), Eb and ξp (c,d), L0 and ξp (e,f) for fixed ξp, L0 and Eb, respectively. Chia-Ching Chou, and Markus J. Buehler Interface Focus doi:10.1098/rsfs.2011.0038 ©2011 by The Royal Society

5. Strength of the cluster under varied Eb, L0 and ξp. Chia-Ching Chou, and Markus J. Buehler Interface Focus doi:10.1098/rsfs.2011.0038 ©2011 by The Royal Society

6. Comparison of robustness and strength for varied Eb and L0, and combined measurement of robustness and strength as a function of Eb and L0. Chia-Ching Chou, and Markus J. Buehler Interface Focus doi:10.1098/rsfs.2011.0038 ©2011 by The Royal Society