DC Field | Value | Language |
---|---|---|
dc.contributor.author | Umrao, Sima | ko |
dc.contributor.author | Gupta, Tejendra K. | ko |
dc.contributor.author | Kumar, Shiv | ko |
dc.contributor.author | Singh, Vijay K. | ko |
dc.contributor.author | Sultania, Manish K. | ko |
dc.contributor.author | Jung, Jung Hwan | ko |
dc.contributor.author | Oh, Il-Kwon | ko |
dc.contributor.author | Srivastava, Anchal | ko |
dc.date.accessioned | 2016-04-20T06:28:31Z | - |
dc.date.available | 2016-04-20T06:28:31Z | - |
dc.date.created | 2015-10-13 | - |
dc.date.created | 2015-10-13 | - |
dc.date.created | 2015-10-13 | - |
dc.date.issued | 2015-09 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v.7, no.35, pp.19831 - 19842 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10203/205365 | - |
dc.description.abstract | The electromagnetic interference (EMI) shielding of reduced graphene oxide (MRG), B-doped MRG (BMRG), N-doped MRG (N-MRG), and B-N co-doped MRG (B-N-MRG) have been studied in the Ku-band frequency range (12.8-18 GHz). We have developed a green, fast, and cost-effective microwave assisted route for synthesis of doped MRG. B-N-MRG shows high electrical conductivity in comparison to MRG, B-MRG and N-MRG, which results better electromagnetic interference (EMI) shielding ability. The co-doping of B and N significantly enhances the electrical conductivity of MRG from 21.4 to 124.4 Sm-1 because N introduces electrons and B provides holes in the system and may form a nanojunction inside the material. Their temperature-dependent electrical conductivity follows 2D-variable range hopping (2D-VRH) and Efros-Shldovskii-VRH (ES-VRH) conduction model in a low temperature range (T < 50 K). The spatial configuration of MRG after doping of B and N enhances the space charge polarization, natural resonance, dielectric polarization, and trapping of EM waves by internal reflection leading to a high EMI shielding of -42 dB (-99.99% attenuation) compared to undoped MR.G (-28 dB) at a critical thickness of 1.2 mm. Results suggest that the B-N-MRG has great potential as a candidate for a new type of EMI shielding material useful in aircraft, defense industries, communication systems, and stealth technology. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Microwave-Assisted Synthesis of Boron and Nitrogen co-doped Reduced Graphene Oxide for the Protection of Electromagnetic Radiation in Ku-Band | - |
dc.type | Article | - |
dc.identifier.wosid | 000361252400038 | - |
dc.identifier.scopusid | 2-s2.0-84941035342 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 35 | - |
dc.citation.beginningpage | 19831 | - |
dc.citation.endingpage | 19842 | - |
dc.citation.publicationname | ACS APPLIED MATERIALS & INTERFACES | - |
dc.identifier.doi | 10.1021/acsami.5b05890 | - |
dc.contributor.localauthor | Oh, Il-Kwon | - |
dc.contributor.nonIdAuthor | Umrao, Sima | - |
dc.contributor.nonIdAuthor | Gupta, Tejendra K. | - |
dc.contributor.nonIdAuthor | Kumar, Shiv | - |
dc.contributor.nonIdAuthor | Singh, Vijay K. | - |
dc.contributor.nonIdAuthor | Sultania, Manish K. | - |
dc.contributor.nonIdAuthor | Srivastava, Anchal | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | microwave | - |
dc.subject.keywordAuthor | reduced graphene oxide | - |
dc.subject.keywordAuthor | electrical conductivity | - |
dc.subject.keywordAuthor | variable range hoppingg. EMI shielding | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | CARBON NANOTUBES | - |
dc.subject.keywordPlus | RAMAN-SPECTROSCOPY | - |
dc.subject.keywordPlus | POLYURETHANE COMPOSITES | - |
dc.subject.keywordPlus | INTERCALATION COMPOUNDS | - |
dc.subject.keywordPlus | SHIELDING PROPERTIES | - |
dc.subject.keywordPlus | LIGHTWEIGHT | - |
dc.subject.keywordPlus | POLYANILINE | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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