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Aluminum foil as a substrate for metal enhanced fluorescence of bacteria labelled with quantum dots, shows very large enhancement and high contrast

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dc.contributor.author Sultangaziyev, Alisher
dc.contributor.author Akhmetova, Aktilek
dc.contributor.author Kunushpayeva, Zhanar
dc.contributor.author Rapikov, Alisher
dc.contributor.author Olena, Filchakova
dc.contributor.author Bukasov, Rostislav
dc.date.accessioned 2020-04-28T10:47:00Z
dc.date.available 2020-04-28T10:47:00Z
dc.date.issued 2020-02-21
dc.identifier.citation Sultangaziyev, A., Akhmetova, A., Kunushpayeva, Z., Rapikov, A., Filchakova, O., & Bukasov, R. (2020). Aluminum foil as a substrate for metal enhanced fluorescence of bacteria labelled with quantum dots, shows very large enhancement and high contrast. Sensing and Bio-Sensing Research, 28, 100332. en_US
dc.identifier.uri https://doi.org/10.1016/j.sbsr.2020.100332
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/4587
dc.description.abstract Very high surface/metal enhanced fluorescence was observed for E. coli single bacteria cells labeled with composite CdSeS/ZnS quantum dots (QDs) on three substrates: aluminum foil, aluminum film and gold film. The enhancement factors relative to maximum fluorescence intensity on glass for those substrates were in the range of several hundred (up to 500) for two-excitation wavelengths 532 and 633 nm. Contrast as a ratio of signals from QD labeled to signals of QD unlabeled (control) cells was also in the range of 100 s for those substrates and the highest contrast of 370 was observed on Al film. When CdTe QDs were used for labelling cells on all substrates or when fluorescence from cells with both QDs was measured on silver film, low or no enhancement was observed. Overall, untreated aluminum foil demonstrated great potential as low-cost substrate for surface/metal enhanced fluorescence, which delivers even more reproducible signal than gold film. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Research Subject Categories::NATURAL SCIENCES en_US
dc.title Aluminum foil as a substrate for metal enhanced fluorescence of bacteria labelled with quantum dots, shows very large enhancement and high contrast en_US
dc.type Article en_US
workflow.import.source science


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