Lifetime analysis for linearly loaded bond clusters. (a,c,e) Bond number versus time t at different loading levels—(a) tan θ = 0.1; (c) tan θ = 0.2 and (e) tan θ = 0.3 (solid lines, 20 pN; short dashed lines, 25 pN; dashed dotted lines, 30 pN; dotted lines, 35 pN; long dashed lines, 40 pN; dash double-dotted lines, 50 pN). (b,d,f) Rupture time versus loading force at different stages of decohesion—(b) tan θ = 0.1; (d) tan θ = 0.2; and (f) tan θ = 0.3 (lines with squares denote time for one-sixth bonds broken, lines with diamonds denote time for one-third bonds broken and lines with triangles denote time for one-half bonds broken; lines with circles denote lifetime).