The absorption frequency range and accuracy of graphene absorbing materials

With the rapid development of electronic information technology, electromagnetic pollution and interference problems have become increasingly serious. To address this challenge, developing high-performance absorbing materials has become one of the research hotspots. Graphene, as an emerging material, has shown great potential in the field of absorbing materials due to its unique physical and chemical properties. This article will explore the absorption frequency range and accuracy of graphene absorbing materials, and introduce the brands under Advanced Institute (Shenzhen) Technology Co., Ltd——Research Platinum Graphene Absorbing MaterialsRelated progress.

Characteristics and advantages of graphene absorbing materials

Graphene materials have advantages such as large specific surface area, high conductivity, low density, and strong dielectric loss. These characteristics make graphene excellent as an absorbing material. However, primitive graphene suffers from poor impedance matching, which limits its practical application effectiveness. To address these issues, researchers have improved the effectiveness and applicability of graphene based absorbing materials by doping heterogeneous elements or designing special morphological structures.

Broadband absorption performance

Graphene foam absorbing materialEffective electromagnetic wave absorption has been achieved over a wide frequency range. For example, in the frequency range of 4-18 GHz or the P-band, these materials can provide excellent small bandwidth absorption solutions. However, it is worth noting that there are relatively few reports on the effective absorption bandwidth that can cover all frequency bands of L, S, C, and X. This means that although current technology can achieve good results in specific frequency bands, further exploration and development are needed for a wider frequency range.

Ultra wideband design

In order to solve the above problems, some studies are devoted to using multi-layer structure design to obtain ultra wideband absorption technology. The specific method is based on the electromagnetic parameters of different kinds of graphene foam materials measured by the coaxial method, combined with genetic algorithm to optimize the selection and combination of materials in each layer, so as to achieve the target of reflectivity less than -10 dB in the whole range of 1~18 GHz frequency band. This design approach not only considers the electromagnetic compatibility between different materials, but also takes into account the influence of material thickness on the final performance.

Absorption accuracy

Absorption accuracy usually refers to the specific numerical description of a material's ability to absorb electromagnetic waves at a specific frequency. According to literature records, certain graphene composite materials such as ZnO/Fe3O4/graphene composite materials can achieve very high reflection loss values under specific conditions, such as -20.85 dB at 0.94 GHz; In other cases, such as reduced graphene oxide (RGO), it may exhibit a reflectance of -6.9 dB at 7 GHz. In addition, when it comes to multi-layer material systems, reflectivity is affected by factors such as incident angle and polarization state. Therefore, it is necessary to accurately calculate the equivalent impedance of each layer to ensure the optimal absorption performance of the overall system.

Advanced Institute (Shenzhen) Technology Co., Ltd. and Research Platinum Brand Graphene Absorbing Materials

Advanced Institute (Shenzhen) Technology Co., Ltd. focuses on the research and development of new materials, especially inGraphene based absorbing materialsSignificant achievements have been made in this regard. The "Research Platinum Brand" series of graphene absorbing materials launched by the company has won wide recognition in the market for its excellent absorbing performance. This series of products not only has the characteristics of lightweight and high strength, but also achieves efficient electromagnetic wave absorption in multiple important frequency bands, suitable for military stealth coatings, civilian electronic product shielding and other fields.

In summary, graphene absorbing materials have shown broad application prospects in solving modern electromagnetic pollution problems due to their unique advantages. Although current research still faces many challenges, with the advancement of technology, we have reason to believe that there will be more innovative breakthroughs in the future, contributing to the construction of a cleaner and more harmonious electromagnetic environment. Meanwhile, institutions such as Advanced Institute (Shenzhen) Technology Co., Ltd. that focus on this field will continue to lead the industry's development and promote the advancement of graphene absorbing materials to a higher level.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.