Magnetoimpedance Thin Film Sensor for Detecting of Stray Fields of Magnetic Particles in Blood Vessel

Multilayered [FeNi (100 nm)/Cu (3 nm)]5/Cu (500 nm)/[Cu (3 nm)/[FeNi (100 nm)]5 structures were used as sensitive elements of the magnetoimpedance (MI) sensor prototype for model experiments of the detection of magnetic particles in blood vessel. Non-ferromagnetic cylindrical polymer rod with a small magnetic inclusion was used as a sample mimicking thrombus in a blood vessel. The polymer rod was made of epoxy resin with an inclusion of an epoxy composite containing 30% weight fraction of commercial magnetite microparticles. The position of the magnetic inclusion mimicking thrombus in the blood vessel was detected by the measurements of the stray magnetic fields of microparticles using MI element. Changes of the MI ratio in the presence of composite can be characterized by the shift and the decrease of the maximum value of the MI. We were able to detect the position of the magnetic composite sample mimicking thrombus in blood vessels. Comsol modeling was successfully used for the analysis of the obtained experimental results and the understanding of the origin the MI sensitivity in proposed configuration. We describe possible applications of studied configuration of MI detection for biomedical applications in the field of thrombus state evaluation and therapy.

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Exploitation of enhanced fluorescence via cross coupling principles towards the design of an optical integrated thin-film sensor for nanotechnology and biomedical applications

IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188) ◽

10.1109/imtc.2001.929532 ◽

2002 ◽

Author(s):

G.C. Giakos ◽

K. Meehan ◽

M. Tuma

Keyword(s):

Thin Film ◽

Biomedical Applications ◽

Cross Coupling ◽

Enhanced Fluorescence ◽

Film Sensor ◽

Thin Film Sensor

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Piezoresistive silicon thin film sensor array for biomedical applications

Thin Solid Films ◽

10.1016/j.tsf.2011.01.300 ◽

2011 ◽

Vol 519 (14) ◽

pp. 4574-4577 ◽

Cited By ~ 22

Author(s):

P. Alpuim ◽

V. Correia ◽

E.S. Marins ◽

J.G. Rocha ◽

I.G. Trindade ◽

...

Keyword(s):

Thin Film ◽

Biomedical Applications ◽

Sensor Array ◽

Silicon Thin Film ◽

Film Sensor ◽

Thin Film Sensor

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Exploitation of enhanced fluorescence via cross-coupling principles toward the design of an optical integrated thin-film sensor for nanotechnology and biomedical applications

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.2002.806037 ◽

2002 ◽

Vol 51 (5) ◽

pp. 970-975 ◽

Cited By ~ 5

Author(s):

G.C. Giakos ◽

K. Meehan ◽

M. Tuma

Keyword(s):

Thin Film ◽

Biomedical Applications ◽

Cross Coupling ◽

Enhanced Fluorescence ◽

Film Sensor ◽

Thin Film Sensor

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How to Improve Physico-Chemical Properties of Silk Fibroin Materials for Biomedical Applications?—Blending and Cross-Linking of Silk Fibroin—A Review

Materials ◽

10.3390/ma14061510 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1510

Author(s):

Sylwia Grabska-Zielińska ◽

Alina Sionkowska

Keyword(s):

Silk Fibroin ◽

Biomedical Applications ◽

Magnetic Particles ◽

Chemical Properties ◽

Ternary Mixtures ◽

Cross Linking ◽

Advantages And Disadvantages ◽

Physico Chemical ◽

Binary And Ternary Mixtures ◽

To Receive

This review supplies a report on fresh advances in the field of silk fibroin (SF) biopolymer and its blends with biopolymers as new biomaterials. The review also includes a subsection about silk fibroin mixtures with synthetic polymers. Silk fibroin is commonly used to receive biomaterials. However, the materials based on pure polymer present low mechanical parameters, and high enzymatic degradation rate. These properties can be problematic for tissue engineering applications. An increased interest in two- and three-component mixtures and chemically cross-linked materials has been observed due to their improved physico-chemical properties. These materials can be attractive and desirable for both academic, and, industrial attention because they expose improvements in properties required in the biomedical field. The structure, forms, methods of preparation, and some physico-chemical properties of silk fibroin are discussed in this review. Detailed examples are also given from scientific reports and practical experiments. The most common biopolymers: collagen (Coll), chitosan (CTS), alginate (AL), and hyaluronic acid (HA) are discussed as components of silk fibroin-based mixtures. Examples of binary and ternary mixtures, composites with the addition of magnetic particles, hydroxyapatite or titanium dioxide are also included and given. Additionally, the advantages and disadvantages of chemical, physical, and enzymatic cross-linking were demonstrated.

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Ammonia gas sensing with tin oxide thin film sensor and coplanar microheater

10.1063/5.0031525 ◽

2020 ◽

Author(s):

Shobi Bagga ◽

Jamil Akhtar ◽

Sanjeev Mishra

Keyword(s):

Thin Film ◽

Tin Oxide ◽

Gas Sensing ◽

Oxide Thin Film ◽

Film Sensor ◽

Ammonia Gas ◽

Thin Film Sensor

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Processing of high weight fraction banana fiber reinforced epoxy composites using pressure induced dip casting method

Journal of Composite Materials ◽

10.1177/0021998320988044 ◽

2021 ◽

pp. 002199832098804

Author(s):

TP Mohan ◽

K Kanny

Keyword(s):

Matrix Composite ◽

Epoxy Polymer ◽

Epoxy Composite ◽

Matrix Material ◽

Natural Fibers ◽

Weight Fraction ◽

Polymer Composite Material ◽

Fiber Reinforced ◽

Banana Fiber ◽

Banana Fibers

The objective of this work is to realize new polymer composite material containing high amount of natural fibers as a bio-based reinforcement phase. Short banana fiber is chosen as a reinforcement material and epoxy polymer as a matrix material. About 77 wt.% of banana fibers were reinforced in the epoxy polymer matrix composite, using pressure induced fiber dipping method. Nanoclay particles were infused into the banana fibers to improve the fiber matrix interface properties. The nanoclay infused banana fiber were used to reinforce epoxy composite and its properties were compared with untreated banana fiber reinforced epoxy composite and banana fiber reinforced epoxy filled with nanoclay matrix composite. The surface characteristics of these composites were examined by electron microscope and the result shows well dispersed fibers in epoxy matrix. Thermal (thermogravimetry analysis and dynamic mechanical analysis), mechanical (tensile and fiber pullout) and water barrier properties of these composites were examined and the result showed that the nanoclay infused banana fiber reinforced epoxy composite shows better and improved properties. Improved surface finish composite was also obtained by this processing technique.

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