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Figure 1

From: Enrichment of ODMR-active nitrogen-vacancy centres in five-nanometre-sized detonation-synthesized nanodiamonds: Nanoprobes for temperature, angle and position

Figure 1

Characterization of DND-bare and DND-OH. (a) Fourier transform infrared spectroscopy spectra of DND-bare (brown) and DND-OH (red). (b) Zeta potentials of DND-bare (brown; −35.0 ± 0.5 mV) and DND-OH (red; 35.4 ± 5.6 mV). (c) Transmission electron microscope images (scale bar 30 nm) of DND-bare (left) and DND-OH (right). (d) X-ray diffraction spectra of DND-bare (brown) and DND-OH (red). Three peaks corresponding to the (111), (220) and (311) diffraction lines of diamond were observed.

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