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7 january 2019 05:01:22

 
Materials, Vol. 12, Pages 143: Tunable Perfect THz Absorber Based on a Stretchable Ultrathin Carbon-Polymer Bilayer (Materials)
 




By exploring the Salisbury screen approach, we propose and demonstrate a thin film absorber of terahertz (THz) radiation. The absorber is comprised of a less than 100 nm thick layer of pyrolytic carbon deposited on a stretchable polydimethylsiloxane (PDMS) film followed by the metal film. We demonstrate that being overall less than 200 microns thick, such a sandwich structure absorbs resonantly up to 99.9%of the incident THz radiation, and that the absorption resonance is determined by the polymer thickness, which can be adjusted by stretching.


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36 viewsCategory: Chemistry, Physics
 
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