Phys.org January 25,2023
An international team of researchers (Sweden, China) experimentally demonstrated, for the first time, a mechanically flexible silver mesh that is visibly transparent, allows high-quality infrared wireless optical communication and efficiently shields electromagnetic interference in the X band portion of the microwave radio region. The Ag mesh/polyethylene (PE) achieved high average EMI shielding effectiveness (SE) of 28.8 dB in the X band with an overall transmittance of 80.9% at 550 nm. With a polydimethylsiloxane (PDMS) coating, the average EMI SE was still up to 26.2 dB and the overall transmittance was increased to 84.5% at 550 nm due to antireflection. The FSO communication does not change much due to the nearly unchanged optical property at 1550 nm. Both the EMI shielding performance and the FSO communication function maintain after 2-hour chemical corrosions as well as after 1000 bending cycles and twisting. The PDMS/Ag mesh/PE sandwiched film can be self-cleaned, suitable for outdoor applications…read more. Open Access TECHNICAL ARTICLEÂ
Schematic of the EMI shielding measurement and picture of the APC-7 connectors… Credit: Optical Materials Express Vol. 13, Issue 2, pp. 469-483 (2023)