scholarly journals Магнитные наночастицы, полученные электрофизическими методами: фокус на биомедицинские приложения

2021 ◽  
Vol 63 (9) ◽  
pp. 1290
Author(s):  
Г.В. Курляндская ◽  
А.П. Сафронов ◽  
С.В. Щербинин ◽  
И.В. Бекетов ◽  
Ф.А. Бляхман ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Nanoparticles ◽  
Regenerative Medicine ◽  
Biomedical Applications ◽  
Giant Magnetoimpedance ◽  
Laser Target ◽  
Giant Magnetoimpedance Effect ◽  
Thin Film Sensors ◽  
Theoretical Approaches ◽  
Highly Sensitive

This work describes the possibility of fabrication of the large batches of magnetic nanoparticles using electrophysical methods of electric explosion of the wire, laser target evaporation and spark discharge. Bioapplications of nanoparticles require the production of magnetic materials in the form of stabilized aqueous suspensions or hydrogels with magnetic fillers; therefore, some details of the synthesis of these materials and their certification are discussed. The peculiarities of interaction of magnetic nanoparticles with biological systems, the problem of biocompatibility, the possibility of using ferrogel substrates for the needs of cell technologies and regenerative medicine, as well as implication of biomimetics in the development of magnetic biosensors are considered. The results of the analysis of a number of different biological experiments carried out with suspensions of various types, obtained based on the same batch of MNPs are presented. An analysis of examples of magnetic biodetection and existing theoretical approaches will make it possible to assess the prospects of this scientific direction for the creation of highly sensitive thin film sensors based on the giant magnetoimpedance effect for biomedical applications

scholarly journals Permalloy-Based Thin Film Structures: Magnetic Properties and the Giant Magnetoimpedance Effect in the Temperature Range Important for Biomedical Applications

Sensors ◽  
2017 ◽  
Vol 17 (8) ◽  
pp. 1900 ◽  
Author(s):  
Anna A. Chlenova ◽  
Alexey A. Moiseev ◽  
Mikhail S. Derevyanko ◽  
Aleksandr V. Semirov ◽  
Vladimir N. Lepalovsky ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Biomedical Applications ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Temperature Range

scholarly journals Scattering of Microwaves by a Passive Array Antenna Based on Amorphous Ferromagnetic Microwires for Wireless Sensors with Biomedical Applications

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3060
Author(s):  
Alberto Moya ◽  
Diego Archilla ◽  
Elena Navarro ◽  
Antonio Hernando ◽  
Pilar Marín
Keyword(s):  
Biomedical Applications ◽  
High Sensitivity ◽  
Bias Field ◽  
Giant Magnetoimpedance ◽  
Scattering Parameter ◽  
Giant Magnetoimpedance Effect ◽  
Radiation Theory ◽  
Temperature Detector ◽  
Frequency Sweeps ◽  
Amorphous Microwires

Co-based amorphous microwires presenting the giant magnetoimpedance effect are proposed as sensing elements for high sensitivity biosensors. In this work we report an experimental method for contactless detection of stress, temperature, and liquid concentration with application in medical sensors using the giant magnetoimpedance effect on microwires in the GHz range. The method is based on the scattering of electromagnetic microwaves by FeCoSiB amorphous metallic microwires. A modulation of the scattering parameter is achieved by applying a magnetic bias field that tunes the magnetic permeability of the ferromagnetic microwires. We demonstrate that the OFF/ON switching of the bias activates or cancels the amorphous ferromagnetic microwires (AFMW) antenna behavior. We show the advantages of measuring the performing time dependent frequency sweeps. In this case, the AC-bias modulation of the scattering coefficient versus frequency may be clearly appreciated. Furthermore, this modulation is enhanced by using arrays of microwires with an increasing number of individual microwires according to the antenna radiation theory. Transmission spectra show significant changes in the range of 3 dB for a relatively weak magnetic field of 15 Oe. A demonstration of the possibilities of the method for biomedical applications is shown by means of wireless temperature detector from 0 to 100 °C.

Giant magnetoimpedance effect in a thin-film multilayer meander-like sensor

2017 ◽  
Vol 121 (12) ◽  
pp. 124501 ◽  
Author(s):  
G. L. S. Vilela ◽  
J. G. Monsalve ◽  
A. R. Rodrigues ◽  
A. Azevedo ◽  
F. L. A. Machado
Keyword(s):  
Thin Film ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect

scholarly journals Alcohol Recognition by Flexible, Transparent and Highly Sensitive Graphene-Based Thin-Film Sensors

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Xuezhu Xu ◽  
Jian Zhou ◽  
Yangyang Xin ◽  
Gilles Lubineau ◽  
Qian Ma ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Film Sensors ◽  
Highly Sensitive

scholarly journals Self-made 3D-printed encapsulation of thin-film transducers for reliable force measurement in biomedical applications

2021 ◽  
Author(s):  
Raffaele Pertusio ◽  
Silvestro Roatta
Keyword(s):  
Thin Film ◽  
Biomedical Applications ◽  
Force Measurement ◽  
Low Cost ◽  
The Body ◽  
Reliable Measure ◽  
Thin Film Sensors ◽  
3D Printed ◽  
External Stimuli ◽  
Accuracy And Repeatability

In biomedical studies as well as in clinical trials, it is often useful to have a reliable measure of the force exerted by the body(eg. clenching force at the teeth or pinch force at fingertips) or on the body by external stimuli (eg. taps to elicit reflexes orlocal pressure for nociceptive stimulation). Thin-film sensors such as FlexiForce ® provide a very handy and versatile solutionfor these application, but can be easily damaged and offer poor accuracy and repeatability, being heavily affected by thesurface material they get in contact with. The aim of the study is the realization of a 3D-printed cover that completely embedsthe sensor, thus providing mechanical protection and increasing reliability of the measurement. The increasing availability of3D printers and of printing materials for medical use allows the user to shape the cover according to specific needs, with shortdeveloping time and low cost.

scholarly journals Highly sensitive ethylene glycol-doped PEDOT–PSS organic thin films for LPG sensing

RSC Advances ◽  
2018 ◽  
Vol 8 (32) ◽  
pp. 18074-18083 ◽  
Author(s):  
Apsar Pasha ◽  
Syed Khasim ◽  
Omar A. Al-Hartomy ◽  
Mohana Lakshmi ◽  
K. G. Manjunatha
Keyword(s):  
Thin Film ◽  
Ethylene Glycol ◽  
Room Temperature ◽  
Low Cost ◽  
Organic Thin Films ◽  
Organic Thin Film ◽  
Thin Film Sensors ◽  
Highly Sensitive ◽  
First Time ◽  
Lpg Sensing

In this study, for the first time we report the fabrication of low-cost ethylene glycol (EG)-doped PEDOT–PSS (poly 3,4-ethylenedioxythiophene:polystyrene sulfonate) organic thin film sensors for the detection of LPG at room temperature.

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