Cross-stacking aligned carbon-nanotube films to tune microwave absorption frequencies and increase absorption intensities.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25338951.
- Also identified by DOI 10.1002/adma.201403735.
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Abstract
Aligned carbon-nanotube (CNT) sheets are used as building blocks to prepare light-weight, frequency-tunable and high-performance microwave absorbers, and the absorption frequency can be accurately controlled by stacking them with different intersectional angles. A remarkable reflection loss of -47.66 dB is achieved by stacking four aligned CNT sheets with an intersectional angle of 90° between two neighboring ones. The incorporation of a second phase such as a metal and a conducting polymer greatly enhances the microwave-absorption capability.