Arts Sciences & Landscape

PHYSICS

Lord Rayleigh

Photonics effects

Photonic effects were first studied In 1887 by the English physicist Lord Rayleigh, whose claim to fame is his explanation (the first) of why the sky is blue.

Jonty Hurwitz

Nano sculpture

This nano sculpture (inspired by Antonio Canova's work in the Louvre, created between 1787 -1793) was photographed using the light properties of photonic crystals. A sculpture. It is the smallest human portraits ever created. The structure is created using a ground-breaking new 3D printing technology and a technique called Multiphoton Lithography. Ultimately these works are created using the physical phenomenon of two photon absorption. If you illuminate a light-sensitive polymer with Ultra Violet wavelengths, it solidifies wherever it was irradiated in a kind of crude lump. If however you use longer wavelength intense light, and focus it tightly through a microscope, something wonderful happens: at the focus point, the polymer absorbs TWO PHOTONS and responds as if it had been illuminated by UV light, namely it will solidify. This two photon absorption occurs only at the tiny focal point – basically a tiny 3D pixel (called a Voxel). The sculpture is then moved along fractionally by a computer controlled process and the next pixel is created. Slowly, over hours and hours the entire sculpture is assembled pixel by pixel and layer by layer. Website : www.jontyhurwitz.com