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A method to measure specific absorption rate of nanoparticles in colloidal suspension using different configurations of radio-frequency fields
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10.1063/1.4748285
/content/aip/journal/apl/101/8/10.1063/1.4748285
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/8/10.1063/1.4748285

Figures

Image of FIG. 1.
FIG. 1.

Rf heating measurement set-up with water-cooled LCR resonator consisting of a parallel plate capacitor and solenoid.

Image of FIG. 2.
FIG. 2.

Magnitude of conservative electric field Ez, magnetically induced electric field Eϕ, and magnetic field Hz are shown for solenoid with quartz tube containing air sample (left images); conducting sample (central images) and air sample with copper shield (right images).

Image of FIG. 3.
FIG. 3.

E rf and Hrf vector components distribution in (a) parallel plate capacitor (Ey), (b) solenoid (Es = Eϕ + Ez), and (c) solenoid with gapped copper shield (Hz and Eϕ).

Image of FIG. 4.
FIG. 4.

Temperature dependence on time plotted for (a) 28 mg/ml, (b) 1 mg/ml SPIO suspension samples measured in three rf fields configurations. Insets show qm slopes and linear dependence of T on t during first 20 s of heating. The other two insets depict NPs overall size and zeta potential distribution.

Tables

Generic image for table
Table I.

Slope (q = dT/dt) values of NaCl and calculated local fields values for the three configurations.

Generic image for table
Table II.

Slope values (q = dT/dt) of SPIO for the three configurations.

Generic image for table
Table III.

SAR values for respective SPIO concentrations. (Hz = 7.1 kA/m, Es = 1.91 kV/m, f = 30 MHz).

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/content/aip/journal/apl/101/8/10.1063/1.4748285
2012-08-24
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A method to measure specific absorption rate of nanoparticles in colloidal suspension using different configurations of radio-frequency fields
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/8/10.1063/1.4748285
10.1063/1.4748285
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