About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
Presentation Title |
Fabrication of Patterned Heaters Using Laser Induced Graphene Electrodes on Flexible Polyimide Substrates |
Author(s) |
Mirza Sahaluddin, Soumalya Ghosh, Moataz Abdulhafez, Jacek Ryl, Mostafa Bedewy |
On-Site Speaker (Planned) |
Mirza Sahaluddin |
Abstract Scope |
Nanostructured heaters developed using direct laser writing on flexible polymer substrates hold promise for applications in flexible electronics, including thermotherapy, efficient boiling and thermomechanical actuators. Laser induced graphene (LIG) heaters offer rapid, stable and uniform temperature response. However, the fabrication of these heaters with tunable and localized temperature control remains challenging. This study presents two manufacturing approaches for customizing heating patterns for LIG-based resistive heaters. These approaches enable creating an abrupt and smooth transition in the morphologies across the heater by exploiting either multiple lasing passes or continuously varying degree of laser beam defocus using a CO2 laser. The resulting heaters with abrupt transitions attain temperature differences of up to 50°C at a fixed voltage, reaching 200°C at 5V. Alongside, the smooth transition approach ensures spatial control over surface area in highly porous morphologies and conductivity in more dense morphologies, which is also exploited for electrochemical energy storage devices. |