About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2D Materials: Synthesis, Properties, and Applications
|
| Presentation Title |
Improving the Electromagnetic Interference Shielding Performance of Exfoliated-Graphite-Based Flexible Graphite Sheet by Engineering a Monotonic Density Gradient Along the Thickness of the Sheet |
| Author(s) |
Deborah D.L. Chung, Akshita Yadav |
| On-Site Speaker (Planned) |
Deborah D.L. Chung |
| Abstract Scope |
Exfoliated graphite (made from intercalated graphite) is uniaxially and greatly compacted without a binder to form a sheet known as flexible graphite. For the same mass, the electromagnetic interference (EMI) shielding performance (SET and SEA) is improved by engineering a monotonic density gradient along the thickness of the sheet. The gradient is obtained based on the fact that the compaction naturally results in more compaction in the two end regions of the exfoliated graphite column than the interior region of the column. A piece of paper positioned at the middle of the column facilitates the separation of the upper and lower parts of the column after compaction to form two samples, each with a monotonic density gradient. The shielding performance is better when the microwave radiation is incident on the surface with the lower density than that with the higher density, due to the lower impedance mismatch for the former. |