Wrigglesworth E.G. – TechConnect Briefs

A study of the interaction between nanoparticles and light: an experimental proof and visualisation of Mie theory in polymer composites

Wrigglesworth E.G., Johnston J.H., Victoria University of Wellington, NZ

An experimental proof of Mie theory has been developed using gold nanoparticles. The relationship between nanoparticle size and the ratio of scattering to absorption has been investigated, and nanoparticle – polymer composites have further been [...]

Discovery of the dichroic effect in cuprous oxide particles for the development of novel composite materials that change colour with direction of light source

Wrigglesworth E.G., Johnston J.H., Victoria University of Wellington, NZ

When a material displays one colour in transmitted light, but a different colour in reflected light, it is known as the dichroic effect. The oldest and most famous example of this effect is the Lycurgus [...]

A novel demonstration of the dichroic effect exhibited by gold nanoparticles and their incorporation into polymer materials

Wrigglesworth E.G., Johnston J.H., Victoria University of Wellington, NZ

Gold nanoparticles have long been utilised for their attractive colours. A well-known example is the Lycurgus cup, dated at the 4th century, which appears red when viewed in transmitted light and green in reflected light [...]