There is a need to provide enhanced protection from crack propagation in structural composites and corrosive effects in materials. Examples include autonomic healing of propagating cracks within the crack plane to retard or prevent large-scale damage in structural composites and corrosion prevention and control of surfaces in harsh marine environments. Likewise additional micronetworks and associated micromaterials are needed for structural composites, microfluidic devices, timed-release medicines, printing materials, color changing materials, and materials useful in corrosion prevention and control.