GRAPHENE FOR EMI SHIELDING (Duh!)
“Graphene appears to be the most effective material for EMI shielding
(Nanowerk Spotlight) Sensitive electronic devices like cell phones and computers require shielding from electromagnetic interference (EMI). Such shielding – which must be electrically conductive – has traditionally been made of metal, which poses a weight problem in the push to miniaturize and lighten electronics.
Previous research has already demonstrated that ultra-lightweight carbon nanostructure-based nanocomposite materials outperform conventional metal shielding due to their light weight, resistance to corrosion, flexibility, and processing advantages ("Towards cost-efficient EMI shielding materials using carbon nanostructure-based nanocomposites").
In new work, scientists in Korea have now demonstrated that single-layer graphene is an excellent choice of material for high-performance EMI shielding. They found that CVD-synthesized graphene shows more than seven times greater EMI shielding effectiveness (in terms of dB) than gold film of the same thickness.
Reporting their findings in a recent online edition of Nanotechnology ("Electromagnetic interference shielding effectiveness of monolayer graphene"), a team led by Byung Jin Cho, a professor in the Department of Electrical Engineering at the Korea Advanced Institute of Science and Technology (KAIST), suggests the feasibility of manufacturing an ultrathin, transparent, weightless, and flexible EMI shield by a single or a few atomic layers of graphene.”
“Graphene appears to be the most effective material for EMI shielding
(Nanowerk Spotlight) Sensitive electronic devices like cell phones and computers require shielding from electromagnetic interference (EMI). Such shielding – which must be electrically conductive – has traditionally been made of metal, which poses a weight problem in the push to miniaturize and lighten electronics.
Previous research has already demonstrated that ultra-lightweight carbon nanostructure-based nanocomposite materials outperform conventional metal shielding due to their light weight, resistance to corrosion, flexibility, and processing advantages ("Towards cost-efficient EMI shielding materials using carbon nanostructure-based nanocomposites").
In new work, scientists in Korea have now demonstrated that single-layer graphene is an excellent choice of material for high-performance EMI shielding. They found that CVD-synthesized graphene shows more than seven times greater EMI shielding effectiveness (in terms of dB) than gold film of the same thickness.
Reporting their findings in a recent online edition of Nanotechnology ("Electromagnetic interference shielding effectiveness of monolayer graphene"), a team led by Byung Jin Cho, a professor in the Department of Electrical Engineering at the Korea Advanced Institute of Science and Technology (KAIST), suggests the feasibility of manufacturing an ultrathin, transparent, weightless, and flexible EMI shield by a single or a few atomic layers of graphene.”