Laser-Induced Graphene in Polyimide for Antenna Applications

Abstract

Laser-induced graphene (LIG) has gained considerable attention recently due to its unique properties and potential applications. In this study, we investigated using LIG in polyimide (PI) as a material for antenna applications. The LIG-−PI composite material was prepared by a facile picosecond laser (1064 nm) irradiation process, which resulted in a conductive graphene network within the PI matrix. Furthermore, LIG formation was confirmed by Raman spectroscopy and sheet resistance measurements. Finally, a patch antenna from LIG with 2.45 GHz microwaves was simulated, produced and tested. These findings suggest that LIG−PI composites have great potential for use in high-frequency electronic devices and can provide a new avenue for the development of flexible and wearable electronics.

Expanding Laser-Induced Graphene and Polydimethylsiloxane Microstructure Flexible Sensor: Innovative Design and Application Research Inspired by Fingerprint

“…During laser irradiation of PI films, the local temperature at the point of contact with the laser can reach extreme temperatures of 2500 °C. This intense heat disrupts the C–O, CO, and N–C bonds within the polyimide, leading to the rearrangement of carbon atoms into graphene structures . Simultaneously, the residual carbon, nitrogen, and oxygen atoms recombine to form various gases, resulting in the creation of graphene with a three-dimensional porous structure.…”

“…This intense heat disrupts the C−O, C�O, and N−C bonds within the polyimide, leading to the rearrangement of carbon atoms into graphene structures. 27 Simultaneously, the residual carbon, nitrogen, and oxygen atoms recombine to form various gases, resulting in the creation of graphene with a three-dimensional porous structure. This unique architecture provides an ideal foundation for the use of graphene in flexible sensors.…”

Recent Advances in the Raman Investigation of Structural and Optical Properties of Graphene and Other Two-Dimensional Materials

“…Graphene and other two-dimensional (2D) materials display exceptional characteristics, making them highly advantageous for a diverse range of applications across various fields [1][2][3][4][5][6][7][8], including flexible nanoelectronics, sensors, and photodetectors [9][10][11][12][13][14][15][16][17].…”

Alignment of Nematic Liquid Crystal 5CB Using Graphene Oxide

“…Graphene has emerged as a material of great interest in the scientific community due to its exceptional properties and numerous applications [1][2][3]. Recent advancements in the field of metamaterials have highlighted the potential of graphene-based hyperbolic metamaterials, especially in the mid-IR frequency range [4].…”