Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Research activities of the Greek Society of Experimental Mechanics of Materi Vol. 13, No. 50 (2019)

Imaging performance of a CaWO4/CMOS sensor

Author and affiliation details
DOI
10.3221/IGF-ESIS.50.39
Pages
471-480
Published
Published inVol. 13, No. 50 (2019)Go to the issue

Abstract

The aim of this study was to investigate the modulation transfer function (MTF) and the effective gain transfer function (eGTF) of a non-destruc­­tive testing (NDT)/industrial inspection complementary metal oxide semi­conductor (CMOS) sensor in conjunction with a thin calcium tungstate (CaWO4) screen. Thin screen samples, with dimensions of 2.7x3.6 cm2 and thick­ness of 118.9 μm, estimated from scanning electron microscopy-SEM im­ages, were extracted from an Agfa Curix universal screen and coupled to the active area of an active pixel (APS) CMOS sensor. MTF was assessed using the slanted-edge method, following the IEC 62220-1-1:2015 method. MTF values were found high across the examined spatial frequency range. eGTF was found maximum when CaWO4 was combined with charge-coupled devices (CCD) of broadband anti-reflection (AR) coating (17.52 at 0 cycles/mm). The com­bi­nation of the thin CaWO4 screen with the CMOS sensor provided very pro­mis­ing image resolution and adequate efficiency properties, thus could be also con­sidered for use in CMOS based X-ray imaging devices, for various applications.

Keywords

Article history

  1. ReceivedUntil the next stage: 3 days
  2. AcceptedUntil the next stage: 0 days
  3. Published

How to cite

APA

Martini, N., Koukou, V., Fountos, G., Valais, I., Kandarakis, I., Michail, C., Bakas, A., Lavdas, E., Ninos, K., Oikonomou, G., Gogou, L., & Panayiotakis, G. (2019). Imaging performance of a CaWO4/CMOS sensor. Fracture and Structural Integrity, 13(50), 471–480. https://doi.org/10.3221/IGF-ESIS.50.39

IEEE

N. Martini et al., “Imaging performance of a CaWO4/CMOS sensor,” Fracture and Structural Integrity, vol. 13, no. 50, pp. 471–480, 2019, doi: 10.3221/IGF-ESIS.50.39.

MLA

Martini, Niki, et al. “Imaging performance of a CaWO4/CMOS sensor.” Fracture and Structural Integrity, vol. 13, no. 50, 2019, pp. 471–480. https://doi.org/10.3221/IGF-ESIS.50.39.

Chicago

Martini, Niki, Vaia Koukou, George Fountos, Ioannis Valais, Ioannis Kandarakis, Christos Michail, Athanasios Bakas, et al. 2019. “Imaging performance of a CaWO4/CMOS sensor.” Fracture and Structural Integrity 13 (50): 471–480. https://doi.org/10.3221/IGF-ESIS.50.39.

Harvard

Martini, N., Koukou, V., Fountos, G., Valais, I., Kandarakis, I., Michail, C., Bakas, A., Lavdas, E., Ninos, K., Oikonomou, G., Gogou, L. and Panayiotakis, G. (2019) ‘Imaging performance of a CaWO4/CMOS sensor’, Fracture and Structural Integrity, 13(50), pp. 471–480. doi: 10.3221/IGF-ESIS.50.39.

Vancouver

Martini N, Koukou V, Fountos G, Valais I, Kandarakis I, Michail C, et al. Imaging performance of a CaWO4/CMOS sensor. Fracture and Structural Integrity. 2019;13(50):471-480. doi:10.3221/IGF-ESIS.50.39

BibTeX

@article{martini2019, author = {Martini, Niki and Koukou, Vaia and Fountos, George and Valais, Ioannis and Kandarakis, Ioannis and Michail, Christos and Bakas, Athanasios and Lavdas, Eleftherios and Ninos, Konstantinos and Oikonomou, Georgia and Gogou, Lida and Panayiotakis, George}, title = {Imaging performance of a CaWO4/CMOS sensor}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {50}, pages = {471--480}, doi = {10.3221/IGF-ESIS.50.39}, url = {https://doi.org/10.3221/IGF-ESIS.50.39}, issn = {1971-8993} }

RIS

TY - JOUR AU - Martini, Niki AU - Koukou, Vaia AU - Fountos, George AU - Valais, Ioannis AU - Kandarakis, Ioannis AU - Michail, Christos AU - Bakas, Athanasios AU - Lavdas, Eleftherios AU - Ninos, Konstantinos AU - Oikonomou, Georgia AU - Gogou, Lida AU - Panayiotakis, George TI - Imaging performance of a CaWO4/CMOS sensor JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/09/02 VL - 13 IS - 50 SP - 471 EP - 480 DO - 10.3221/IGF-ESIS.50.39 UR - https://doi.org/10.3221/IGF-ESIS.50.39 SN - 1971-8993 ER -

Licence

Copyright © 2019 Niki Martini, Vaia Koukou, George Fountos, Ioannis Valais, Ioannis Kandarakis, Christos Michail, Athanasios Bakas, Eleftherios Lavdas, Konstantinos Ninos, Georgia Oikonomou, Lida Gogou, George Panayiotakis.

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