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Fig. 2 | Biomaterials Research

Fig. 2

From: Chromophoric cerium oxide nanoparticle-loaded sucking disk-type strip sensor for optical measurement of glucose in tear fluid

Fig. 2

X-ray photoelectron spectroscopy (XPS) characterization and energy dispersive spectroscopy (EDS) mapping with scanning electron microscopy (SEM) of sensing paper treated with CNP and APTS. a-I SEM images of CNP- and APTS-treated filter paper. a-II – a-VI exhibit the element mapping of carbon (red, II), oxygen (green, III), cerium (purple, IV), and silicon (cyan, V), in that order. a-VII Merged EDS maps of CNP- and APTS-treated filter paper. b XPS spectra of filter paper made of cellulose fiber. c XPS spectra of CNP-treated filter paper. The spectra represented Ce3d peak, meaning CNP. d XPS spectra of CNP and APTS-treated filter paper. The spectra represented Si2p peak, meaning APTS

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Biomaterials Research

ISSN: 2055-7124

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