Fig. 5: EWA performances of amorphous carbon. | Nature Communications

Fig. 5: EWA performances of amorphous carbon.

From: Phenolic multiple kinetics-dynamics and discrete crystallization thermodynamics in amorphous carbon nanostructures for electromagnetic wave absorption

Fig. 5

a The ring-shaped thermograms of the effective absorption bandwidth for different filling rates, pyrolysis temperatures, and morphologies. Use the K-Means algorithm to data analysis. b Schematic representation of the EWA cascade effect. Dielectric features initially determined by atomic configuration are realized to accumulate during the stepwise modulation of nano-curvature, structural asymmetry, and multi-shell structure, which are inherited to the final dielectric loss properties. The interlocking, rather than cumulative, effects of microscopic, mesoscopic, and macroscopic multiscale factors achieve efficient EWA. c 2D EWA performance plot of triple-shell bowl-shaped hollow PRNs (mbh-PRNs-2, 700 °C, 20 wt%). d The widest EAB and the strongest reflection loss of mbh-PRNs-2 (700 °C, 20 wt%). e 2D EWA performance plot of double-shell short chain-shaped hollow PRNs (dch-PRNs, 700 °C, 20 wt%). f The widest EAB and the strongest reflection loss of dch-PRNs (700 °C, 20 wt%). g Compared with the EWA performance of other carbon materials with special structures in recent years. h The radiation value detected by electronic communication equipment under different circumstances.

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