Nanoyou Lab Experiment C- Teacher Document (14-18)
EXPERIMENT C illustrates the principle of a colorimetric nanosensor. In this experiment students use a plasmonic colorimetric sensor made of nanoparticles: a gold colloid (containing gold nanoparticles) is the sensing material, and the addition of an analyte (such as salt or sugar) induces a change in the aggregation of the nanoparticles in the colloid, which is reflected in a change in its colour. Similar colloids are used in the development of moder biosensors. The experiment is designed for the 14-18 years age group. This is a teacher document to provide them with some background information as well as instructions for preparing the experiments. This experiment is one of four experiments contained in the NANOYOU Teachers Training Kit of nanoscience and nanotechnologies.
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