Fabrication of Conductive Nanomaterial Patterns on Polymeric Substrates Using Laser and Adhesive Tape

This study introduces a technique for fabricating flexible devices using a combination of spraying carbon nanotubes (CNTs), laser patterning, and adhesive tape. The method involves depositing CNTs on polypropylene substrate by spray coating and utilizing selective laser treatment to create durable and embedded conductive patterns. This approach addresses the common issue of poor adhesion of conductive material to substrates in flexible electronics by partially melting the polymer to enhance CNTs integration. The fabricated sensors exhibit excellent durability and retain performance after multiple bending cycles. Chronoamperometry tests demonstrate the ability of the electrochemical sensors thus fabricated to detect hydrogen peroxide (H2O2) in buffer solutions, with a detection range from 0.1 to 900 ppm. The use of selective laser treatment and adhesive tape enables the removal of unpatterned areas and ensures high precision and flexibility in the design. This straightforward and versatile method can be applied to various conductive materials and polymers, and it can offer significant potential for advancements in flexible sensor technology and other electronic applications.