Advanced Materials for Electromagnetic Shielding
by Maciej Jaroszewski, Sabu Thomas, Ajay V. Rane
14Advanced Carbon Based Foam Materials for EMI Shielding
A. R. Ajitha1, Anu Surendran1, M. K. Aswathi1, V. G. Geethamma1, and Sabu Thomas1,2
1 International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala, India
2 School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
14.1 Introduction
Carbon materials have sparked considerable attraction in terms of electromagnetic interference (EMI) shielding to address the problems posed by environmental safety concerns caused by the usage of electronic devices. EMI shielding arises through either the absorption or reflection of electromagnetic radiation, thereby protecting and shielding people and other instruments from the source of radiation. Conducting materials, viz. metals and carbon materials, protect by reflection of radiation, whereas magnetic materials usually protect by the mechanism of absorption. Carbon materials are very stable and their electronic properties, high surface area, and thermal stability have contributed to use as effective candidates for electromagnetic shielding applications. Additionally, the presence of delocalized π‐electron networks also facilitates carbon materials for the preparation of lightweight electron shielding materials. Composite materials have been prepared to enhance the EMI shielding along with other properties like mechanical, dielectric, flexibility, lifetime, etc. Early works on EMI shielding were focused ...