Journal
ACS APPLIED NANO MATERIALS
Volume 4, Issue 2, Pages 949-972Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c00278
Keywords
core-shell nanomaterials; EM pollution; electromagnetic interference shielding (EMI); nanocomposites; microwave absorption
Funding
- DST, India [DST/NM/NS/2018/157]
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Core-shell nanoparticles are a unique class of nanostructured materials that have been widely studied for their applications in electromagnetic interference shielding and microwave absorption. Electromagnetic interference, as a form of electronic pollution, can have significant impacts on electronic devices, making it crucial to protect them from such interference.
Core-shell nanoparticles are a unique class of nanostructured materials, which received significant attention in the last two decades owing to their exciting properties and a wide variety of applications. By judiciously tuning the core as well as the shell'', an assortment of core-shell nanostructures can be obtained with tailorable properties which can play pivotal roles in designing materials for electromagnetic interference (EMI) shielding and microwave absorption. In recent times when the use of high-end electronics has been on the rise, electromagnetic pollution is inevitable and it affects every walk of life. Among numerous e-pollutions, a recently highlighted domain that has far-reaching consequences is electromagnetic interference. EMI is the disturbance created during an electronic device's operation when it is in the vicinity of an electromagnetic field caused by another electronic or electric device. Since EMI decreases the lifetime and degrades the performance of the electronic instruments and even affects human health, it is crucial to protect sophisticated instruments and components from EM interference. High-performance EMI shields capable of attenuating microwave propagation efficiently have been developed in the past decade. Herein, in this review, we attempted to provide a logical guide to various core-shell nanostructures (<= 500 nm) that have been synthesized in the past decade for the application in microwave absorption and EMI shielding. The prime focus of this review article is to highlight the fundamental concept of EMI shielding and microwave absorption that have been reported for various systems in the literature along with various synthetic and fabrication strategies in designing suitable broadband EM absorbers/screeners. Finally, we also made an effort to provide a holistic outlook and perspective in which upcoming research will continue to flourish.
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