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<p>Materials capable of dissipating electromagnetic energy are essential in technologies that demand efficient suppression of electromagnetic interference. Herein, we report novel cellulose nanostructures derived from <i>Clitoria ternatea</i> (butterfly pea) that exhibit excellent absorption across the 8–18&#xa0;GHz range. The nanostructures demonstrate excellent performance in both the X-band and Ku-band, with a minimum reflection loss of −30&#xa0;dB at 9&#xa0;GHz in the X-band, achieved with a thickness as low as 2&#xa0;mm. Furthermore, the material achieves an effective absorption bandwidth (EAB) covering the entire range from X-band and Ku-band. These findings demonstrate the potential of hierarchical cellulose networks as efficient, sustainable candidates for high-performance microwave absorbers.</p> Graphical abstract <p></p>

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Microwave Absorbing Hierarchical Nanostructures Synthesized from Clitoria ternatea-Derived Cellulose

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Ruchika Thayil,
  • Saidi Reddy Parne

摘要

Materials capable of dissipating electromagnetic energy are essential in technologies that demand efficient suppression of electromagnetic interference. Herein, we report novel cellulose nanostructures derived from Clitoria ternatea (butterfly pea) that exhibit excellent absorption across the 8–18 GHz range. The nanostructures demonstrate excellent performance in both the X-band and Ku-band, with a minimum reflection loss of −30 dB at 9 GHz in the X-band, achieved with a thickness as low as 2 mm. Furthermore, the material achieves an effective absorption bandwidth (EAB) covering the entire range from X-band and Ku-band. These findings demonstrate the potential of hierarchical cellulose networks as efficient, sustainable candidates for high-performance microwave absorbers.

Graphical abstract