Several embodiments of light emitting diode packaging configurations including a substrate with a cavity are disclosed herein. For example, the method receives an alert for at least one of: a trunk or a Permanent Virtual Circuit, where the trunk or the PVC is associated with a route. Alternative designs including other strategic material placement, the formation of hardfacing materials in toothwear design shapes, bimetallic gage, graded composite hardfacing materials, recesses or cavities at edges of the outer diameter, and various methods of applying the material also may be employed. Extraction characteristics of a sol-gel titania-PDMS capillary remained practically unchanged after continuous rinsing with a 0.