Iron–cobalt–graphite core–shell nanoparticles as efficient electromagnetic wave absorbers at X‐band frequency range

2014 ◽  
Vol 9 (6) ◽  
pp. 412-416 ◽  
Author(s):  
Seyyed Salman Seyyed Afghahi ◽  
Ali Shokuhfar ◽  
Behzad Saberi ◽  
Abdollah Javidan
Keyword(s):  
Electromagnetic Wave ◽  
Core Shell ◽  
Frequency Range ◽  
Shell Nanoparticles ◽  
Band Frequency ◽  
Iron Cobalt ◽  
X Band ◽  
Core Shell Nanoparticles

Enhanced Microwave Absorption Properties of FeCo@TiO2 Core-Shell Nanoparticles

2018 ◽  
Vol 15 (2) ◽  
pp. 163-168 ◽  
Author(s):  
Abdolrasoul Gharaati ◽  
Majid Ebrahimzadeh
Keyword(s):  
Tio2 Nanoparticles ◽  
Microwave Absorption ◽  
Core Shell ◽  
Frequency Range ◽  
Absorption Properties ◽  
Shell Nanoparticles ◽  
Microwave Absorption Properties ◽  
Band Frequency ◽  
Microwave Absorbing ◽  
Core Shell Nanoparticles

Background: Microwave absorbing nanocomposite is a kind of material that attenuates the reflection of microwave radiation in the gigahertz frequency range. These materials consist of dielectric and transition nanoparticles tend to exhibit attractive microwave absorption properties due to their high permittivity and permeability loss factors. Method: The FeCo nanoparticles were prepared from the reduction of iron and cobalt ions with hydrazine. Then, the FeCo@TiO2 core-shell nanoparticles synthesized by co-precipitation method and their microwave absorbing performance are investigated. The phase composition, morphology and coercivity properties of the nanoparticles were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). The composites of FeCo@TiO2 nanoparticles with the ratio of 30 vol.% and paraffin wax (70 vol.%) in different thicknesses were prepared. The microwave absorption properties of these composites were investigated in the frequency range of 2-18 GHz using the vector network analyzer. Results: These nanocomposites exhibit the excellent microwave absorption characteristics (reflection loss<-20dB) in the bored band frequency range of 6-16 GHz with different absorber thicknesses of 1- 2.2 mm. The maximum absorption capability of -47.76 dB was obtained at the frequency of 7.92 GHz with the thickness of 1.8 mm. Based on this study, it can be argued that the FeCo@TiO2 nanoparticles can be used for the bored band and thin microwave absorbers.

Evaluation of iron-cobalt/ferrite core-shell nanoparticles for cancer thermotherapy

2008 ◽  
Vol 103 (7) ◽  
pp. 07A307 ◽  
Author(s):  
A. H. Habib ◽  
C. L. Ondeck ◽  
P. Chaudhary ◽  
M. R. Bockstaller ◽  
M. E. McHenry
Keyword(s):  
Cobalt Ferrite ◽  
Core Shell ◽  
Ferrite Core ◽  
Shell Nanoparticles ◽  
Iron Cobalt ◽  
Core Shell Nanoparticles

Enhanced electromagnetic wave absorption of Ni–C core-shell nanoparticles by HCP-Ni phase

2018 ◽  
Vol 5 (9) ◽  
pp. 095013 ◽  
Author(s):  
Daitao Kuang ◽  
Lizhen Hou ◽  
Shiliang Wang ◽  
Bowen Yu ◽  
Deng Lianwen ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Core Shell Nanoparticles

Preparation and Electrocatalytic Performance of Thin-shell Ni/Pt Core-shell Nanoparticles

2012 ◽  
Vol 27 (1) ◽  
pp. 95-101
Author(s):  
Shi-Bin LIU ◽  
Chun-Ying YANG ◽  
Zhong-Lin ZHANG ◽  
Dong-Hong DUAN ◽  
Xiao-Gang HAO ◽  
...  
Keyword(s):  
Thin Shell ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Electrocatalytic Performance ◽  
Core Shell Nanoparticles

Pluronic-Based Core/Shell Nanoparticles for Drug Delivery and Diagnosis

2013 ◽  
Vol 20 (28) ◽  
pp. 3488-3499 ◽  
Author(s):  
Yon Jung ◽  
Hwanbum Lee ◽  
Jae Kim ◽  
Eun Koo ◽  
Keun Oh ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Colorimetric and SERS dual-mode sensing of mercury (II) based on controllable etching of Au@Ag core/shell nanoparticles

2021 ◽  
Vol 330 ◽  
pp. 129364
Author(s):  
Jinhua Wang ◽  
Jiamin Wu ◽  
Yuping Zhang ◽  
Xia Zhou ◽  
Ziwei Hu ◽  
...  
Keyword(s):  
Core Shell ◽  
Dual Mode ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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