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Article analysis:

The article “Ultralow-frequency broadband characteristics of stepwise radial metamaterials” provides a detailed overview of a new type of stepwise radial metamaterial (SRM) with ultralow-frequency and broadband characteristics. The authors use numerical analysis to investigate the propagation characteristics of Lamb waves in the SRM, which results in the opening of bandgaps in the ultralow-frequency range. Furthermore, they discuss how structural parameters can influence these bandgap characteristics and provide an experimental sample to prove their findings.

The article is generally reliable and trustworthy as it provides evidence for its claims through numerical analysis and experiments. However, there are some potential biases that should be noted. For example, while the authors discuss how structural parameters can influence bandgap characteristics, they do not explore any counterarguments or alternative explanations for their findings. Additionally, while they acknowledge that their research could provide a better alternative for noise reduction and vibration reduction, they do not mention any possible risks associated with this approach or any other potential applications for this technology.

In conclusion, while this article is generally reliable and trustworthy due to its evidence-based approach, there are some potential biases that should be noted such as lack of exploration into counterarguments or alternative explanations for their findings as well as lack of discussion about possible risks associated with this approach or other potential applications for this technology.