Graphene with ultra-high electron mobility and ultra-high mechanical toughness is highly promising in the fields of solar cells, heat sinks and flexible electronic devices.
　　Given that monolayer or few-layer graphene has not been widely used, the graphene-based thin-film functional Melco Crown platform has become a new generation of flexible and highly conductive thin-film platform with its excellent conductivity, thermal conductivity and bendable properties under macroscopic conditions.
　　Generally speaking, the graphene thin film platform is a three-dimensional graphene platform prepared from single or few layers of graphene nanosheets, carbon nanotubes and other one-dimensional and two-dimensional carbon melting point through spin coating, filtration, compression and even inkjet printing and 3D printing, and then use high-temperature curing for film processing.
　　The flexible conductive graphene films thus produced are typically micron-thick and contain tens of thousands of layers of graphene. Although this film loses the light transmittance of graphene, very good electrical conductivity is obtained through the tight alignment of the graphene layers. characteristics, and its electrical conductivity can reach comparable to that of metal.
　　Recently, Professor He Daping's research group at the RF and Microwave Research Center of Wuhan University of Technology has designed a new environmentally friendly, low-cost paper-based flexible antenna pressure sensor using a multilayer graphene film with a thickness of 30μm and a conductivity of 106S/m. The sensor exhibits better radiation performance and stronger stress sensing characteristics, and by comparing it with a copper metal antenna, the graphene film is able to achieve a higher conductivity than a copper antenna.
　　The sensor exhibits better radiation performance and strong stress sensing characteristics, and by comparing with metal-copper antennas, the graphene film is more efficient and more efficient than copper antennas. The flexible antenna offers higher sensitivity and superior stability performance. In addition, graphene thin film flexible antenna pressure sensors offer flexible mechanical properties, reversible deformation, and excellent temperature resistance.
　　Figure 1. Characterization of graphene films and their performance for antenna sensors.

　　a) TEM images of graphene oxide, illustrated separately for graphene oxide solutions.
　　(b) Photograph of flexible graphene film under bending.
　　(c) SEM image of cross-section of a flexible graphene film with a thickness of 30 μm
　　(d) Paper-based graphene antenna pressure sensor affixed to the back of the hand
　　(e) Normalized resonant frequency versus state of motion curve
　　(f) PET-based graphene antenna pressure sensor affixed to the elbow.
　　In practice, the pressure sensing function can also be accomplished by choosing different substrates according to different test environments. The paper-based antenna shows superior frequency deviation performance. The paper-based antenna in the figure shows better frequency-bias performance due to the better fit to the human body than the PET-based one.
　　This work presents an application for introducing graphene films into a flexible antenna sensor to achieve high sensitivity and stability of the pressure sensing, which is well suited for applications such as wearable devices and wireless strain sensing. This work provides a new approach to the study of graphene-based electronics, while providing an opportunity to further enhance various sensors and The performance of the antenna provides a new functionalized graphene platform.