Document Details

Document Type : Article In Journal 
Document Title :
A novel facile synthesis and electromagnetic wave shielding effectiveness at microwave frequency of graphene oxide paper
A novel facile synthesis and electromagnetic wave shielding effectiveness at microwave frequency of graphene oxide paper
 
Subject : physics 
Document Language : English 
Abstract : Nano-structured graphene oxide (GO) freestanding paper was synthesized by an arc recharge technique in flowing of oxygen for the first time. This technique offers new ways on how e.g. layers structure nanomaterials could be produced. The morphology and structural properties of the assynthesized GO were examined by means of X-ray diffraction, Fourier transform infrared spectra, scanning electrom microscopy, energy dispersive x-ray spectroscopy, transmission electron microscopy, high resolution transmission electron microscopy and selective area electron diffraction techniques. The structural and morphological characterizations revealed that the synthesized GO were well-defined nanosheets with a thickness of 6 nm. The optical band gap was calculated from the absorption spectrum, and was found to be 3.32 eV. Furthermore, we aim to use GO paper to develop new electromagnetic interference shielding sheets that have a high shielding effectiveness (SE) (over 30 dB) at frequencies in the 1-12 GHz range. The complex permittivity and total shielding effectiveness of as synthesized GO freestanding paper are measured at frequencies from 1 to 12 GHz. Finally, to enhance the performances of the electromagnetic shields effectiveness, five-layered GO sheets were made. Furthermore, the highest SE for the light-weight freestanding GO paper was 50 dB at 1 GHz, indicating commercial use for many industrial or military shielding applications as an attractive candidate for the new type of microwave shielding 
ISSN : 0946-7076 
Journal Name : MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 
Volume : 21 
Issue Number : 10 
Publishing Year : 1435 AH
2015 AD 
Article Type : Article 
Added Date : Thursday, August 17, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
N.A Aal,Aal,, N.A InvestigatorDoctorate 
Faten Al-HazmiAl-Hazmi, Faten ResearcherDoctorate 
A.A Al-Ghamdi,Al-Ghamdi, A.A ResearcherDoctorate 
Attieh A Al-Ghamdi,Al-Ghamdi, Attieh A. ResearcherDoctorate 
Farid El-TantawyEl-Tantawy, Farid ResearcherDoctorate 
F YakuphanogluYakuphanoglu, F ResearcherDoctoratefyhan@hotmail.com

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