Laser Scribed Polyimide as a Platform for Monitoring pH within Smart Bandages

The design of a laser scribed polyimide sensor for the measurement of pH within wound environments is described. A number of probe formats have been characterized with both potentiometric and voltammetric methodologies shown to provide a robust means of determining pH. The versatility of the laser patterning on polyimide is shown to yield a mechanically flexible double sided probe that could be suitable for use in a wide variety of clinical applications.