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Dosimetry characteristics of polycarbonate/bismuth oxide nanocomposite for real-time application in the field of gamma-rays

Amir Veiskarami1, Shahryar Malekie23, Sedigheh Kashian2, Suffian Mohamad Tajudin3


Background: Polymer-carbon nanostructures have previously been introduced for dosimetry of gamma rays with potential application in radiotherapy. In this research work, bismuth oxide (Bi2O3) nanoparticles were added into the amorphous polycarbonate (PC) matrix to enhance the probability of the photoelectric effect and dosimetry response in parallel.

Materials and methods: PC/Bi2O3 nanocomposites at concentrations of 0, 5, 20, 40, and 50 Bi2O3 wt% were fabricated via a solution method. Afterward, the samples were irradiated by gamma rays of cobalt-60 (60Co) related to Picker V-9, and Therarton-780 machines at 30–254 mGy/min. Dosimetric characteristics were carried out including linearity, angular dependency, energy, bias-polarity, field size, and repeatability.

Results: Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analyses exhibited an appropriate dispersion state. The dosimeter response was linear at 30–254 mGy/min for the all samples. The 50 wt% sample exhibited the highest sensitivity at 4.61 nC/mGy. A maximum angular variation of approximately 15% was recorded in normal beam incidence. The energy dependence at two energies of 662 and 1250 keV was obtained as 0.7%. Bias-polarity for the 40, and 50 wt% samples at 400 V were measured as 15.9% and 9.0%, respectively. The dosimetry response was significantly dependent on the radiation field size. Also, the repeatability of the dosimeter response was measured as 0.4%.

Conclusions: Considering the dosimetry characteristics of PC-Bi2O3 nanocomposites, and appropriate correction factors, this material can be used as a real-time dosimeter for the photon fields at therapy level. 

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  1. Hosseini MA, Malekie S, Kazemi F. Experimental evaluation of gamma radiation shielding characteristics of Polyvinyl Alcohol/Tungsten oxide composite: A comparison study of micro and nano sizes of the fillers. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2022; 1026: 166214.
  2. Safdari SM, Malekie S, Kashian M, et al. Introducing a novel beta-ray sensor based on polycarbonate/bismuth oxide nanocomposite. Sci Rep. 2022; 12: 2496.
  3. Mehrara R, Malekie R, Saleh Kotahi SM. Introducing a novel low energy gamma ray shield utilizing Polycarbonate Bismuth Oxide composite. Sci Rep. 2021; 11: 10614.
  4. Malekie S, Ziaie F. Study on a novel dosimeter based on polyethylene–carbon nanotube composite. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2015; 791: 1–5.
  5. Malekie S, Ziaie F, Esmaeli A. Study on dosimetry characteristics of polymer–CNT nanocomposites: Effect of polymer matrix. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2016; 816: 101–105.
  6. Malekie S, Ziaie F, Feizi S, et al. Dosimetry characteristics of HDPE–SWCNT nanocomposite for real time application. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2016; 833: 127–133.
  7. Mosayebi A, Malekie S, Mosayebi S, et al. A feasibility study of polystyrene/CNT nano-composite as a dosimeter for diagnostic and therapeutic purposes. J Instrumentation. 2017; 12: P05012.
  8. Intaniwet A, Mills CA, Shkunov M, et al. Heavy metallic oxide nanoparticles for enhanced sensitivity in semiconducting polymer x-ray detectors. Nanotechnology. 2012; 23: 235502.
  9. Mosayebi A, Malekie S, Rahimi A, et al. Experimental study on polystyrene-MWCNT nanocomposite as a radiation dosimeter. Radiat Phys Chem. 2019; 164: 108362.
  10. Kyatsandra S, Wilkins R. Total Ionizing Dose X-ray Radiation Effects on MWCNT/PMMA Thin Film Composites. IEEE Transactions on Nanotechnology. 2015; 14(1): 152–158.
  11. Veiskarami A, Sardari D, Malekie S, et al. Computational prediction of electrical percolation threshold in polymer/graphene-based nanocomposites with finite element method. Journal of Polymer Engineering. 2022; 42(10): 936–945.
  12. Malekie S, Ziaie F. A two-dimensional simulation to predict the electrical behavior of carbon nanotube/polymer composites. J Polymer Engin. 2017; 37: 205–210.
  13. Bedoya Hincapie CM, Pinzon Cardenas MJ, Alfonso Orjuela JE, et al. Physical-chemical properties of bismuth and bismuth oxides: Synthesis, characterization and applications. Dyna. 2012; 79: 139–148.
  14. Ho CH, Chan CH, Huang YS. The study of optical band edge property of bismuth oxide nanowires α-Bi 2 O 3, Optics Expr. 2013; 21: 11965–11972.
  15. Un HI, Cheng P, Lei T. Charge‐Trapping‐Induced Non‐Ideal Behaviors in Organic Field‐Effect Transistors. Adv Materials. 2018; 30: 1800017.
  16. Li H, Wang X, Chu H, et al. High performance resistive memory device based on highly stable layered CsPb2Br5 perovskite polymer nanocomposite. J Alloys Comp. 2022; 921: 166014.
  17. Veiskarami A, Sardari D, Malekie S, et al. Evaluation of dosimetric characteristics of a ternary nanocomposite based on High Density Polyethylene/Bismuth Oxide/Graphene Oxide for gamma-rays. Sci Rep. 2022; 12(1): 18798.
  18. Madani N, Sardari D, Hosntalab M, et al. Effect of low dose gamma radiation on electric conductivity of LDPE and PMMA polymers. Engineering Solid Mechanics. 2020; 8: 31–40.
  19. Madani N, Sardari D, Hosntalab M, et al. Real time dose rate meter for gamma radiation using LDPE and PMMA in presence of 1–5 kV/mm electric field. Radiat Phys Chem. 2018; 151: 164–168.
  20. Kim J, Seo D, Lee B, et al. Nano‐W Dispersed Gamma Radiation Shielding Materials. Adv Engin Materials. 2014; 16(9): 1083–1089.
  21. Kaur J, Lee J, Shofner M. Influence of polymer matrix crystallinity on nanocomposite morphology and properties. Polymer. 2011; 52(19): 4337–4344.
  22. Chen J, Huang X, Jiang P, et al. Protection of SEBS/PS blends against gamma radiation by aromatic compounds. J Appl Polymer Sci. 2009; 112(2): 1076–1081.
  23. Gurkalenko YA, Eliseev D, Zhmurin P, et al. The plastic scintillator activated with fluorinated hydroxyflavone. Function Mat. 2017; 24: 244–249.
  24. Mark JE. Physical properties of polymers handbook. Springer 2007.
  25. Malekie S, Kashian S, Safdari SM, et al. Effect of reinforcement phase loading on the dosimetry response of a Polycarbonate/Bismuth Oxide nanocomposite for beta particles. Radiat Phys Engineering. 2022; 3: 11–15.
  26. Berger MJ, Hubbell JH, Seltzer SM et al. 2011 XCOM: Photon Cross Sections Database, National Institute of Standards and Technology, USA,
  27. Rahman A, Singh A, Karumuri S. et al. Graphene reinforced silicon carbide nanocomposites: processing and properties. In: Tandon G. ed. Composite, Hybrid, and Multifunctional Materials. Vol. 4. Springer 2015: 165–176.
  28. Briesmeister J. MCNP4C-Monte Carlo N-Particle transport code system version 4C. Los Alamos National Laboratory, Los Alamos 2005.
  29. Wegener S, Sauer OA. Electrometer offset current due to scattered radiation. J Appl Clin Med Phys. 2018; 19(6): 274–281.
  30. Knoll, GF. Radiation Detection and Measurement. 4th ed. John Wiley & Sons, Inc, Michigan 2010.
  31. Akbas A, Donmez Kesen C, Koksal C, et al. Surface and buildup region dose measurements with Markus parallel-plate ionization chamber, GafChromic EBT3 film, and MOSFET detector for high-energy photon beams. Bilge, Surface and buildup region dose measurements with Markus parallel-plate ionization chamber, GafChromic EBT3 film, and MOSFET detector for high-energy photon beams, Advances in High Energy Physics. Adv High Energy Phys; 2016.
  32. Scott J, Berglund A, Schell M, et al. A genome-based model for adjusting radiotherapy dose (GARD): a retrospective, cohort-based study. Lancet Oncol. 2017; 18(2): 202–211.
  33. Fachin A, Mello S, Sandrin-Garcia P, et al. Gene Expression Profiles in Radiation Workers Occupationally Exposed to Ionizing Radiation. J Radiat Res. 2009; 50(1): 61–71.
  34. Manning G, Kabacik S, Finnon P, et al. High and low dose responses of transcriptional biomarkers inex vivoX-irradiated human blood. Int J Radiat Biol. 2013; 89(7): 512–522.
  35. Aggarwal R, Ranganathan P. Common pitfalls in statistical analysis: Linear regression analysis. Perspect Clin Res. 2017; 8(2): 100–102.
  36. Kumar R, Sharma SD, Philomina A, et al. Dosimetric Characteristics of a PIN Diode for Radiotherapy Application. Technol Cancer Res Treat. 2014; 13(4): 361–367.
  37. Saavedra MS. Novel Organic Based Nano-composite Detector Films: The Making and Testing of CNT Doped Poly(acrylate) Thin Films on Ceramic Chip Substrates. Department of Physics, University of Surrey, Guildford, Surrey 2005: 37.
  38. Attix FH. Introduction to radiological physics and radiation dosimetry. Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Madison, Wisconsin 2004.
  39. International Standards Organization. Guide to the Expression of Uncertainty in Measurement. ISO, Geneva 1993.