Fig. 7From: Nanobio applications of quantum dots in cancer: imaging, sensing, and targetingNormalized PL spectra comparison of two QD samples before and after surface overcoating with (a) dihydrolipoic acid (DHLA-QD), (c) PEG-PLs-QD (PEG2000), (e) non-PEG-PLs-QD, (b) AFM image of DHLA-QD625 on Mg2+-modified mica, (d) TEM images of PEG2000-PLs encapsulated QDs with emission at 586Â nm, (f) TEM images of PLs-QDs with emission at 586Â nm. (Lu 2005)Back to article page