2D nanosheets and composites for EMI shielding analysis

Abstract Liquid exfoliated, 2-dimensional (2D), few layered graphene and molybdenum disulfide nanosheets (GNS and MNS) are size selected for EMI shielding application. Scanning electron microscopy (SEM) has confirmed the lateral dimensions increase (1–2 µm for GNS and MNS) with lowering centrifugati...

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Autores principales:	Ramsha Khan, Zeeshan Mehmood Khan, Hamza Bin Aqeel, Sofia Javed, Ahmed Shafqat, Ibrahim Qazi, Muhammad Abdul Basit, Rahim Jan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/68a52e7f68a14430aa25992cbfe2093a
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spelling	oai:doaj.org-article:68a52e7f68a14430aa25992cbfe2093a2021-12-02T15:11:49Z2D nanosheets and composites for EMI shielding analysis10.1038/s41598-020-78614-62045-2322https://doaj.org/article/68a52e7f68a14430aa25992cbfe2093a2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78614-6https://doaj.org/toc/2045-2322Abstract Liquid exfoliated, 2-dimensional (2D), few layered graphene and molybdenum disulfide nanosheets (GNS and MNS) are size selected for EMI shielding application. Scanning electron microscopy (SEM) has confirmed the lateral dimensions increase (1–2 µm for GNS and MNS) with lowering centrifugation speed (1000 to 500 rpm). The micron size (~ 15 µm) restacked structures of GNS and MNS (L ~ 2 µm) over a nylon membrane have shown ~ 16 dB and ~ 6 dB EMI shielding effectiveness (1–8 GHz frequency), respectively. The enhanced EMI shielding effectiveness for GNS-500 may be credited to its high carrier mobility as well as high aspect ratio of nanosheets. The GNS-500 are further dispersed (0.3 wt.%) in thermoplastic polyurethane for their applicability as flexible EMI shielding material. The dielectric characteristics predicted an enhancement for the attenuation (200 MHz–1 GHz). The experimental results (1–8 GHz) suggested the maximum attenuation ~ 18 dB showing the composite applicability as a broadband EMI shielding material.Ramsha KhanZeeshan Mehmood KhanHamza Bin AqeelSofia JavedAhmed ShafqatIbrahim QaziMuhammad Abdul BasitRahim JanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ramsha Khan Zeeshan Mehmood Khan Hamza Bin Aqeel Sofia Javed Ahmed Shafqat Ibrahim Qazi Muhammad Abdul Basit Rahim Jan 2D nanosheets and composites for EMI shielding analysis
description	Abstract Liquid exfoliated, 2-dimensional (2D), few layered graphene and molybdenum disulfide nanosheets (GNS and MNS) are size selected for EMI shielding application. Scanning electron microscopy (SEM) has confirmed the lateral dimensions increase (1–2 µm for GNS and MNS) with lowering centrifugation speed (1000 to 500 rpm). The micron size (~ 15 µm) restacked structures of GNS and MNS (L ~ 2 µm) over a nylon membrane have shown ~ 16 dB and ~ 6 dB EMI shielding effectiveness (1–8 GHz frequency), respectively. The enhanced EMI shielding effectiveness for GNS-500 may be credited to its high carrier mobility as well as high aspect ratio of nanosheets. The GNS-500 are further dispersed (0.3 wt.%) in thermoplastic polyurethane for their applicability as flexible EMI shielding material. The dielectric characteristics predicted an enhancement for the attenuation (200 MHz–1 GHz). The experimental results (1–8 GHz) suggested the maximum attenuation ~ 18 dB showing the composite applicability as a broadband EMI shielding material.
format	article
author	Ramsha Khan Zeeshan Mehmood Khan Hamza Bin Aqeel Sofia Javed Ahmed Shafqat Ibrahim Qazi Muhammad Abdul Basit Rahim Jan
author_facet	Ramsha Khan Zeeshan Mehmood Khan Hamza Bin Aqeel Sofia Javed Ahmed Shafqat Ibrahim Qazi Muhammad Abdul Basit Rahim Jan
author_sort	Ramsha Khan
title	2D nanosheets and composites for EMI shielding analysis
title_short	2D nanosheets and composites for EMI shielding analysis
title_full	2D nanosheets and composites for EMI shielding analysis
title_fullStr	2D nanosheets and composites for EMI shielding analysis
title_full_unstemmed	2D nanosheets and composites for EMI shielding analysis
title_sort	2d nanosheets and composites for emi shielding analysis
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/68a52e7f68a14430aa25992cbfe2093a
work_keys_str_mv	AT ramshakhan 2dnanosheetsandcompositesforemishieldinganalysis AT zeeshanmehmoodkhan 2dnanosheetsandcompositesforemishieldinganalysis AT hamzabinaqeel 2dnanosheetsandcompositesforemishieldinganalysis AT sofiajaved 2dnanosheetsandcompositesforemishieldinganalysis AT ahmedshafqat 2dnanosheetsandcompositesforemishieldinganalysis AT ibrahimqazi 2dnanosheetsandcompositesforemishieldinganalysis AT muhammadabdulbasit 2dnanosheetsandcompositesforemishieldinganalysis AT rahimjan 2dnanosheetsandcompositesforemishieldinganalysis
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2D nanosheets and composites for EMI shielding analysis

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