Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 20: Graphen: Adsorption, intercalation and doping II (joint session O/TT)
O 20.5: Vortrag
Montag, 12. März 2018, 17:45–18:00, MA 043
growth of fe3o4 nanorod arrays on graphene sheets for application in electromagnetic absorption fields — •huanming zhang1, min zhou1, yang xu1, shipu xu1, yujin chen2, and yong lei1 — 1Institute für Physics & IMN MacroNano (ZIK), Technische Universität Ilmenau, 98693 Ilmenau, Germany — 2Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, 150001 Harbin, China
A facial strategy is developed to fabricate a three-dimensional (3D) Fe3O4 nanorod array/graphene architecture, in which Fe3O4 nanorods with a length and diameter of about 600 and 100 nm, respectively, are grown on both surfaces of the graphene sheets. The measured electromagnetic parameters show that the 3D architecture exhibits excellent electromagnetic wave-absorption properties, that is, more than 99*% of electromagnetic wave energy can be attenuated by the 3D architecture if it is added in only 20 wt*% of the paraffin matrix, as the thickness of the absorber is in the range from 2.38 to 5.00 mm. The analysis of the electromagnetic (EM) absorption mechanism reveals that the excellent EM absorption properties are related to the special 3D architecture, and therefore, the construction of graphene-based 3D heteronanostructures is effective in obtaining lightweight EM absorbers with strong absorption properties.