Conclusion

The finite element approach for interface migration is a powerful simulation tool. The evolution of nanotubes undergoing elastocapillary densification has been properly captured for the first time. The parameters affecting the time scale of this evolution, as well as the nanotube morphology at equilibrium can be studied. This can be used to understand the physics governing our experimental observations and to guide us tailoring the freeform shape of the nanotubes.

The model can be expaned to account for interactions among multiple nanotubes in 3D. The model can also be revised to account for assymetric nanotube configurations by modelling the reaction forces between the nanotubes by van der Waals forces.