scholarly journals Characterization and dielectric properties of magnetic nanoparticles (Ferrofluid) conjugated with chemotherapy drug for medical application

2014 ◽  
Vol 6 (1) ◽  
pp. 38-46 ◽  
Author(s):  
R. M Ahmed ◽  
◽  
Maha Fadel ◽  
Magda S.Hanafy ◽  
Manar A. Ibrahim
Keyword(s):  
Magnetic Nanoparticles ◽  
Dielectric Properties ◽  
Medical Application ◽  
Chemotherapy Drug

scholarly journals Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2081
Author(s):  
Marko Pavlin ◽  
Franc Novak ◽  
Gregor Papa
Keyword(s):  
Dielectric Properties ◽  
Low Power ◽  
Medical Application ◽  
Fast Response ◽  
The Body ◽  
Frequency Change ◽  
Tissue Composition ◽  
Medical Sector ◽  
Bioimpedance Measurement ◽  
Wide Operating

An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric. The operating frequency reflects the tissue dielectric properties (i.e., the tissue composition and on the tissue physiological changes). The sensor operation was tested within a medical application by measuring the breathing of a patient, which was an easy detectable physiological process. The advantage over conventional contact bioimpedance measurement methods is that no direct contact between the resonator and the body is required. Furthermore, the sensor’s wide operating range, ability to adapt to a broad range of measured materials, fast response, low power consumption, and small outline dimensions enables applications not only in the medical sector, but also in other domains. This can be extended, for example, to food industry or production maintenance, where the observed phenomena are reflected in dynamic dielectric properties of the observed object or material.

Functional magnetic nanoparticles for medical application

2007 ◽  
Vol 310 (2) ◽  
pp. 2877-2879 ◽  
Author(s):  
Yuko Ichiyanagi ◽  
Shinji Moritake ◽  
Shu Taira ◽  
Mitsutoshi Setou
Keyword(s):  
Magnetic Nanoparticles ◽  
Medical Application

Medical application of functionalized magnetic nanoparticles

2005 ◽  
Vol 100 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Akira Ito ◽  
Masashige Shinkai ◽  
Hiroyuki Honda ◽  
Takeshi Kobayashi
Keyword(s):  
Magnetic Nanoparticles ◽  
Medical Application ◽  
Functionalized Magnetic Nanoparticles

Effect of Zn on Dielectric Properties of Co-ZnFe2O4 Magnetic Nanoparticles

2020 ◽  
Vol 840 ◽  
pp. 448-453 ◽  
Author(s):  
Masni Agustina Lumbantoruan ◽  
Edi Suharyadi
Keyword(s):  
Dielectric Constant ◽  
Magnetic Nanoparticles ◽  
Dielectric Properties ◽  
Diffraction Analysis ◽  
Spinel Structure ◽  
Cobalt Ferrite ◽  
Zinc Content ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dielectric Constant Decrease

Dielectric properties of Zn substituted cobalt ferrite (Co1-xZnxFe2O4) magnetic nanoparticles with various Zn concentrations (x = 0.2-0.8) have been successfully investigated. The structure of the prepared samples Co1-xZnxFe2O4 confirmed to be cubic spinel structure using X-ray diffraction analysis. The crystallite size of the sample was found to decrease with the increase of zinc content from 11.6 nm to 9.8 nm, while the lattice parameters found to increase with the increase of zinc from 8.18 to 8.25 Å. For Zinc x = 0.6 at frequency 5 kHz have the highest real dielectric constant (ɛ') was 678.8 and imaginary dielectric constant (ɛ'') was 833.3. The maximum impedance found at zinc x = 0.3 was 138.5. The dielectric constant decrease rapidly with increasing the frequency and then reaches the constant value where the frequency was used from 5-120 kHz.

scholarly journals Medical Application of Ultra-Wideband Technology

2021 ◽  
Author(s):  
Abdulhameed Habeeb Alghanimi
Keyword(s):  
Dielectric Properties ◽  
Medical Application ◽  
Ultra Wideband ◽  
Medical Applications ◽  
Human Tissues ◽  
Safety Aspects ◽  
Repetition Time ◽  
Wideband Radar ◽  
Coaxial Probe ◽  
The Ideal

This chapter deals with the applications of ultra-wideband technology, especially for medical scope, and the most features and advantages that made it useful in this scope. Also, the chapter has been included with the most important medical applications of UWB technology. Ultra-wideband radar for angiography and UWB glucometer are the main applications which will be explained in this chapter. The exposure for safety aspects, the dielectric properties of human tissues, blood dielectric properties measurement using open-ended coaxial probe experiment to improve the blood image, and the ideal ultra-wideband pulses’ shape, width, and repetition time that are used for medical applications have been illustrated. Finally, the results (figures, tables, and experiment results), conclusions, and discussions have been mentioned.

scholarly journals Influence of magnetic nanoparticles on dielectric properties of Shell oil transformer oil

2021 ◽  
Vol 24 (02) ◽  
pp. 154-159
Author(s):  
O.V. Kovalchuk ◽  
◽  
O.B. Nesterenko ◽  
V.Yo. Kotovskyi ◽  
I.P. Studenyak ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Dielectric Properties ◽  
Dielectric Permittivity ◽  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Low Frequency ◽  
Transformer Oil ◽  
Magnetic Impurities ◽  
Different Types

The influence of two types of nano-impurities MF1 and MF2 on the dielectric properties of Shell oil transformer oil at the temperature 293 K has been studied. It has been shown that these magnetic impurities have no significant effect on the dielectric permittivity value of Shell oil, but more significantly increase its conductivity, in so doing, the impurity MF1 increases the conductivity of transformer oil 4 times larger than the impurity MF2. It has been ascertained that the low-frequency dielectric relaxation appearing in the studied samples can be described by the Cole–Cole equation. The parameters of this relaxation process and the influence of different types of magnetic impurities on them have been estimated.

Dielectric properties of magnetic nanoparticles’ suspension in a ferroelectric liquid crystal

2015 ◽  
Vol 42 (3) ◽  
pp. 334-343 ◽  
Author(s):  
E.V. Popova ◽  
S.A. Gamzaeva ◽  
А.I. Krivoshey ◽  
A.P. Kryshtal ◽  
A.P. Fedoryako ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Magnetic Nanoparticles ◽  
Dielectric Properties ◽  
Ferroelectric Liquid Crystal ◽  
Nanoparticles Suspension
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