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Magnetic Polymer Nanocomposite for Medical Application

100%

Świętek M., Tokarz W., Tarasiuk J., Wroński S., Błażewicz M.

vol. 125

issue 4

891-894

Magnetic sponges derived from biocompatible and resorbable polymers are promising materials for medical applications. These materials have been utilised extensively in research applications for the capture of biomolecules and cells, the construction of tissue scaffolds and in regenerative medicine. The object of this study was a polymer scaffold made of polycaprolactone (PCL) containing a 10 wt% amount of nanomagnetite, manufactured in a two-step method. The porosity and morphological parameters were characterised with the use of μ-computer-aided tomography and scanning electron microscopy. Furthermore, the magnetic properties were evaluated. The obtained results confirmed high porosity and the appearance of randomly oriented pores. Moreover, evaluations of the magnetic properties, of both the magnetite nanopowder and the prepared magnetic nanocomposite, were performed. The tests verified the ferromagnetic character of the materials under investigation.

X-Rays Response of Diamond Detectors Constructed Using Diamond Layers Produced by Low Power Microwave Chemical Vapor Deposition Reactor

59%

Kordyasz A., Bednarek A., Kowalczyk M., Tarasiuk J., Kulczycka E., Teodorczyk M., Gajewski M., Kordyasz Ł., Rowiński O., Lamparski K., Karwański Ł., Lipczewski T.

Acta Physica Polonica A

2015

vol. 127

issue 5

1555-1559

The low power reactor for microwave chemical vapor deposition process is described. The rotating Mo holder of 12 mm diameter and 6 mm height with the diamond substrate was heated by 2.45 GHz microwaves to temperature about 800°C in the range of (1.5-7)% CH_{4}/H_{2} mixture to create plasma at pressure 70 Tr. Stabilization of the holder temperature was performed by optical observation of radiation from the holder followed by adjusting of the magnetron power. Diamond detectors are produced using microwave chemical vapor deposition process grown on single crystal diamond high pressure high temperature Sumimoto substrates, [100] oriented. The response of diamond detectors for X-rays has been measured in the current mode using medical X-rays tube. The linear response of the diamond detector current versus X-ray tube current (dose) is presented.

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2 Acta Physica Polonica A

1 2015

1 2014

2 Tarasiuk J.

1 Bednarek A.

1 Błażewicz M.

1 Gajewski M.

1 Karwański Ł.

1 Kordyasz A.

1 Kordyasz Ł.

1 Kowalczyk M.

1 Kulczycka E.

1 Lamparski K.

1 Lipczewski T.

1 Rowiński O.

1 Teodorczyk M.

1 Tokarz W.

1 Wroński S.

1 Świętek M.

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Magnetic Polymer Nanocomposite for Medical Application

X-Rays Response of Diamond Detectors Constructed Using Diamond Layers Produced by Low Power Microwave Chemical Vapor Deposition Reactor