390182.fig.005a
(a)
390182.fig.005b
(b)
390182.fig.005c
(c)
390182.fig.005d
(d)
Figure 5: Time-lapse pH-calibrated images acquired every 3.5 min upon nanosensor addition up to 90 min. Calibrated pixels demonstrating pH are overlaid with bright field images. (a) 28 minutes, (b) 45.5 minutes, (c) 59.5 minutes and (d) 80.5 minutes. Reprinted with permission from Nowak-Lovato et al. [11] (copyright 2009 Society for Applied Spectroscopy).