Student are challenged to investigate how nanotechnology has influenced the design and construction of common items. Working in teams, students develop a waterproofing plan for cotton fabric after being introduced to the hydrophobic effect and how the effect can be replicated by re-engineering products on the nano level.
This is a lesson plan that explores how light behaves differently at the nanoscale when compared to the macro scale by providing examples of nanostructure that make up iridescent colors in nature. Students will create an artificial opal.
Since nanoparticles are invisible to the human eye, this activity shows some benefits of nanotechnology at work by displaying the effectiveness of the particles smaller than the wavelength of visible lightright and therefore able to block it.