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      Heterointerface Engineering in Electromagnetic Absorbers: New Insights and Opportunities

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          Electronic properties of two-dimensional systems

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            Electromagnetic interference shielding with 2D transition metal carbides (MXenes)

            Materials with good flexibility and high conductivity that can provide electromagnetic interference (EMI) shielding with minimal thickness are highly desirable, especially if they can be easily processed into films. Two-dimensional metal carbides and nitrides, known as MXenes, combine metallic conductivity and hydrophilic surfaces. Here, we demonstrate the potential of several MXenes and their polymer composites for EMI shielding. A 45-micrometer-thick Ti3C2Tx film exhibited EMI shielding effectiveness of 92 decibels (>50 decibels for a 2.5-micrometer film), which is the highest among synthetic materials of comparable thickness produced to date. This performance originates from the excellent electrical conductivity of Ti3C2Tx films (4600 Siemens per centimeter) and multiple internal reflections from Ti3C2Tx flakes in free-standing films. The mechanical flexibility and easy coating capability offered by MXenes and their composites enable them to shield surfaces of any shape while providing high EMI shielding efficiency.
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              2D materials and van der Waals heterostructures

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                Author and article information

                Contributors
                Journal
                Advanced Materials
                Advanced Materials
                Wiley
                0935-9648
                1521-4095
                January 2022
                November 28 2021
                January 2022
                : 34
                : 4
                : 2106195
                Affiliations
                [1 ]School of Electronic Science and Engineering Nanjing University Nanjing 210093 P. R. China
                [2 ]College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China
                Article
                10.1002/adma.202106195
                34599773
                bb784bdb-96dc-42a9-83c7-d61cc195ead2
                © 2022

                http://onlinelibrary.wiley.com/termsAndConditions#vor

                http://doi.wiley.com/10.1002/tdm_license_1.1

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