Figure 4.

(A) Histogram of forces for initial detachment of RB128 E. coli attached to SAMs presenting α-C-mannoside groups at χ_Man = 10⁻¹, χ_Man = 10⁻⁶, and χ_Man = 0. The data at each value of χ_Man were obtained by using 50 different bacteria, chosen at random among the bacteria that had attached to the surface. (B) Histogram of detachment forces for RB128 attached in an end-on orientation to SAMs presenting α-C-mannoside groups at χ_Man = 10⁻¹, χ_Man = 10⁻³, χ_Man = 10⁻⁶, and χ_Man = 0. Data from each surface were a result of analyzing 50 individual bacteria with 5–10 force measurements per bacterium. The probability indicates the percentage of bacteria that would detach at a given force value; for each surface, the sum of the data set equals a probability of 1.0.