
(Kate Nichols, 2009)

These drawings are created by dispersing graphite powder in isopropanol—rubbing alcohol—and painting the suspension onto paper. When dry, I draw over the loose graphite with pencil. The compressed pencil graphite engages light differently than its loose counterpart—reflecting more, absorbing and scattering less. Compressed, the graphite has a multicolored shimmer in sunlight. Despite these differences, the compressed and loose graphite are indistinguishable from certain angles, rendering the drawn details invisible at times. Making these drawings, I have to constantly reposition the drawing in relation to the sun and my eyes. Likewise, a curious viewer must walk around the drawings, tilting her head, slouching and tiptoeing to see them, which makes the viewing process more of a search.
The drawn layer is composed of repeated circles and ovals of various sizes and densities, resulting in a visual effect akin to that of scales. Like these drawings, the colors of many animals’ scales are viewing-angle dependent because the scales have periodic architectures on the scale of wavelengths in the visible spectrum. These drawings complement lab-based work with silica nanoparticles: in both projects, I use the same material throughout, varying packing structures to generate visual effects with a high degree of viewing-angle dependency.
