Electromagnetic Interference Shielding Composites

Background

Rapid development of wireless communications, distributed sensor arrays, and portable electronic devices have made the control of electromagnetic (EM) radiation and the reduction of EM pollution crucially important. Electromagnetic interference (EMI) shielding is needed to ensure that electronics operate reliably and without detrimental effects on human health. 

Brief Description

Prof. Alexander Balandin, Dr. Fariborz Kargar and colleagues from the University of California, Riverside have developed novel composites with fillers comprised of graphene and/or quasi-1D van der Waals materials that provide efficient EMI shielding. These unique composites can block EM radiation and are also electrically insulating. These composites may be added to adhesives used in the packaging of electronic components so that the resulting electronic devices will have EMI shielding properties. This technology ensures that EMI shielding is achieved so that a variety of electronics operate reliably and without detrimental effects on human health.

Applications

• To protect users from electromagnetic radiation from cell phones, computers, and other electronics
• To protect electronics from electromagnetic radiation damage
• To ensure that devices that emit or receive EM energy do not interfere with the function of other electronic devices.
  

Patent Status

Patent Pending

Related Materials

• Graphene Epoxy-Based Composites as Efficient Electromagnetic Absorbers in the Extremely High-Frequency Band, ACS Applied Materials & Interfaces 2020 12 (25), 28635-28644; DOI: 10.1021/acsami.0c06729 - 06/01/2020
• Electrically-Insulating Flexible Films with Quasi-One-Dimensional van-der-Waals Fillers as Efficient Electromagnetic Shields in GHz and Sub-THz Frequency Bands, Advanced Materials, 2007286 (2021); DOI: 10.1002/adma.202007286 - 02/12/2020