Although the convenience provided by electromagnetic waves used for information exchange is increasing, the energy of unwanted electromagnetic waves unintentionally emitted from devices is increasing as the devices work with higher frequency. In view of this vulnerability, thin films as lightweight electromagnetic wave shields against noise will be necessary for information protection. We propose the fabrication of lightweight electromagnetic wave shields using highly crystalline single-walled carbon nanotubes (HC-SWCNTs), which can be made large and flexible using a method based on a wet process, utilizing the optical and conductive properties of HC-SWCNTs.
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