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Optical Nanosensors
6.1 Introduction
Optical nanosensors (NSs) are ultra-advanced analytical tools that bring
together the advantages of customary sensor technology with exibility of
using dissolved indicators. They are dened as devices with dimensions
smaller than 1000 nm that have the capability to incessantly monitor chemi-
cal or biological parameters by optically converting the available information
into signals useful for analytical purposes. The dimensions of optical NSs
vary from a few nanometers, for example, for macromolecules with sens-
ing properties, up to 1 m. Many micrometer-sized core-shell systems have ...