Observation of Effective Permittivity of Water-Dispersible FePt Nanoparticles at Microwave Frequencies

2007 ◽  
Vol 43 (2) ◽  
pp. 879-881 ◽  
Author(s):  
D. S. Hung ◽  
P. C. Chiang ◽  
C. W. Lee ◽  
C. S. Ho ◽  
S. H. Chieng ◽  
...  
Keyword(s):  
Effective Permittivity ◽  
Fept Nanoparticles ◽  
Microwave Frequencies ◽  
Water Dispersible

Engineering Water-Dispersible FePt Nanoparticles for Biomedical Applications

2007 ◽  
Vol 43 (6) ◽  
pp. 2445-2447 ◽  
Author(s):  
Po-Chieh Chiang ◽  
Dung-Shing Hung ◽  
Jeng-Wen Wang ◽  
Chih-Sung Ho ◽  
Yeong-Der Yao
Keyword(s):  
Biomedical Applications ◽  
Fept Nanoparticles ◽  
Water Dispersible

Water-Dispersible FePt Nanoparticles Having ω-Mercapto-α-carboxylic Acid Ligands

2004 ◽  
Vol 853 ◽  
Author(s):  
Janis K. Mabry ◽  
Laura Beth Tackett ◽  
Hitesh Bargaria ◽  
Xiangcheng Sun ◽  
Earl T. Ada ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Ammonium Hydroxide ◽  
Photoelectron Spectra ◽  
Fept Nanoparticles ◽  
X Ray ◽  
Water Dispersible ◽  
Ordered Arrays ◽  
Oleyl Amine ◽  
Counter Ions ◽  
Thiol Ligand

ABSTRACTFePt nanoparticles, ∼ 2nm in diameter, were prepared by the polyol reduction of platinum(II) acetylacetonate and iron(III) acetylacetonate in the presence of oleyl amine and oleic acid surfactants. The particles were dispersed in hexane and the dispersion added to a solution of 11-mercaptoundecanoic acid in cyclohexanone. As the 11-mercaptoundecanoic acid ligands replaced the oleic acid ligands, the particles precipitated. The particles could be dispersed in basic water, made basic either with sodium hydroxide or ammonium hydroxide. X-ray photoelectron spectra showed a peak near 164 eV, sulfur (2p) confirming the presence of the thiol ligand. Similarly, the oleic acid ligands were replaced with either 3-mercaptopropionic acid or 16-mercaptohexadecanoic acid to give FePt particles that could be dispersed in water. Dispersions made with FePt nanoparticles having 11-mercaptoundeacnoic acid ligands and ammonium counter ions were dried on TEM grids to give highly ordered films consisting of close-packed arrays of FePt nanoparticles. When the counter ion was sodium, the particles tended to aggregate, instead of forming ordered arrays.

Direct synthesis of water dispersible superparamagnetic TGA capped FePt nanoparticles: One pot, one shot

2015 ◽  
Vol 156 ◽  
pp. 247-253 ◽  
Author(s):  
Deepak K. Jha ◽  
Komanduri S. Varadarajan ◽  
Anant B. Patel ◽  
Pritam Deb
Keyword(s):  
Direct Synthesis ◽  
Fept Nanoparticles ◽  
One Pot ◽  
Water Dispersible

Effective Permittivity of Shielding Composite Materials for Microwave Frequencies

2013 ◽  
Vol 55 (6) ◽  
pp. 1178-1186 ◽  
Author(s):  
Valentin Preault ◽  
Romain Corcolle ◽  
Laurent Daniel ◽  
Lionel Pichon
Keyword(s):  
Composite Materials ◽  
Effective Permittivity ◽  
Microwave Frequencies

scholarly journals Predicting effective permittivity of composites containing conductive inclusions at microwave frequencies

AIP Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 032109 ◽  
Author(s):  
Allen L. Garner ◽  
Gregory J. Parker ◽  
Davide L. Simone
Keyword(s):  
Effective Permittivity ◽  
Microwave Frequencies

Amine-terminated water-dispersible FePt nanoparticles

2008 ◽  
Vol 320 (19) ◽  
pp. L121-L124 ◽  
Author(s):  
Yasushi Tanaka ◽  
Shinya Maenosono
Keyword(s):  
Fept Nanoparticles ◽  
Water Dispersible

Direct Synthesis of Water-Dispersible FePt Nanoparticles Capped with L-Cysteine

2010 ◽  
Vol 10 (1) ◽  
pp. 222-226 ◽  
Author(s):  
Kohsuke Mori ◽  
Yuichi Kondo ◽  
Hiromi Yamashita
Keyword(s):  
Direct Synthesis ◽  
Fept Nanoparticles ◽  
Water Dispersible
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