
363Optical Nanosensors
by polymer layers and the template is dissolved in the nal step. In sequence
(c), calcium carbonate is reacted with sodium carbonate to form calcium car-
bonate molecules, which are mixed with the template particles. The remain-
ing steps are essentially the same but the nal microcapsule contains the
calcium carbonate cargo molecules that were placed inside the template in
the rst step. The sequence exemplies the process for incorporating the
required cargo molecules inside the capsule cavity.
6.8 Disadvantages of Optical Fiber and Fluorescent
Nanosensors for Living Cell Studies
Optical ber NSs (optodes) and uorescent ...