Carbon nanotubes buckypaper radiation studies for medical physics applications

Alanazi, A. and Alkhorayef, M. and Alzimami, K. and Jurewicz, I. and Abuhadi, N. and Dalton, A. and Bradley, D.A. (2016) Carbon nanotubes buckypaper radiation studies for medical physics applications. Applied Radiation and Isotopes, 117. pp. 106-110. ISSN 0969-8043, DOI

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Graphite ion chambers and semiconductor diode detectors have been used to make measurements in phantoms but these active devices represent a clear disadvantage when considered for in vivo dosimetry. In such circumstance, dosimeters with atomic number similar to human tissue are needed. Carbon nanotubes have properties that potentially meet the demand, requiring low voltage in active devices and an atomic number similar to adipose tissue. In this study, single-wall carbon nanotubes (SWCNTs) buckypaper has been used to measure the beta particle dose deposited from a strontium-90 source, the medium displaying thermoluminescence at potentially useful sensitivity. As an example, the samples show a clear response for a dose of 2 Gy. This finding suggests that carbon nanotubes can be used as a passive dosimeter specifically for the high levels of radiation exposures used in radiation therapy. Furthermore, the finding points towards further potential applications such as for space radiation measurements, not least because the medium satisfies a demand for light but strong materials of minimal capacitance.

Item Type: Article
Funders: College of Applied Medical Sciences Research Centre and Deanship of Scientific Research at King Saud University (CAMS-RC3334/15), University of Malaya, Ministry of Higher Education of Malaysia, UM-MOHE, High Impact Research Grant UM.C/625/1/HIR/33
Uncontrolled Keywords: Thermoluminescence; Carbon nanotubes; Radiation therapy
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Nov 2017 04:04
Last Modified: 09 Nov 2017 04:04

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