Light-Weight Low-Loss Dielectric Polymer Composites Containing Carbon Nanostructure.

摘要

We report that conductive films made from hexadecylated graphene nanoribbons (HD-GNRs) can have high transparency to radiofrequency (RF) waves even at very high incident power density. Nanoscale-thick HD-GNR films with an area of several square centimeters were found to transmit up to 390 W (2 105 W/m2) of RF power with negligible loss, at an RF transmittance of approximatley 99%. The HD- GNR films conformed to electromagnetic skin depth theory, which effectively accounts for the RF transmission. The HD-GNR films also exhibited sufficient optical transparency for tinted glass applications, with efficient voltage- induced deicing of surfaces. The dispersion of the HD-GNRs afforded by their edge functionalization enables spray , spin- or blade-coating on almost any substrate, thus facilitating flexible, conformal and large-scale film production. In addition to use in antennas and radomes where RF transparency is crucial, these capabilities bode well for the use of the HD-GNR films in automotive and general glass applications where both optical and RF transparencies are desired.