Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Dispersion diagrams for different values of the model parameters β and σ. The solid lines are obtained through interpolation of the discrete values of λ, solutions of the dispersion equation for k ∈ N,k≥1. The dispersion curves are reported in (a) and (b) for the case n0>>nmax and in (c) and (d) for the case n0 ≪ nmin. Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Morphological diagram of the expanding bacterial colony for increasing values (from left to right) of the parameter β, while keeping the other parameters fixed. In particular, the simulations were obtained setting R out = 220, σ = 0.01,n0 = 0.5, and Rout/R0* = 5. The contour of the colony is plotted at different instants of time (reported at the bottom of each contour plot). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Morphological diagram of the expanding bacterial colony for different values of the dimensionless surface tension σ, maintaining fixed the dimensionless Petri dish radius (R out = 220) and the initial radius of the colony (R out = 44). In the simulations, it is set β = 1 and n0 = 0.5. Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Morphological diagram of the expanding bacterial colony for different values of R out and R0*, while keeping the value q = Rout/R0* = 5 fixed. The other parameters are equal to β = 1, σ = 0.01, and n0 = 0.5. The contour of the colony is plotted at different instants of time (reported at the bottom of each contour plot). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Morphological diagram of the expanding bacterial colony for different values of the initial size of the colony, R0*, maintaining fixed the dimensionless Petri dish radius. The other parameters in the model are: R out = 220, σ = 0.01, β = 1, and n0 = 0.5. The contour of the colony is plotted at different instants of time (reported at the bottom of each contour plot). Figure Legend:

Date of download: 9/18/2016 Copyright © ASME. All rights reserved. From: Mechanically Driven Branching of Bacterial Colonies J Biomech Eng. 2015;137(7): doi: / Morphological diagram of the expanding bacterial colony for different values of n 0, regulating the Monod dynamic. The other parameters in the model are: R out = 100, σ = 0.01, β = 1, and Rout/R0* = 5. At the bottom of each morphological diagram, the evolution of the nutrients concentration along a diameter of the Petri dish is reported for different instants of time. Figure Legend: