The work of Daniel Zeller was a huge source of inspiration to me back in art school. I found his work one day when I was thumbing through a large format art book in the library. His free form drawings are done mostly using a set of colored micron pens and regular format paper. The intricacy and patience exhibited in his drawings was an inspiration for me as I labored over similar compositions for hours late into the night.
While his work resembles some kind of scientific inquiry, his artist bio states that he draws inspiration from many places including satellite photography, electron micrographs, topographic maps, and schematic diagrams. It seems that Zeller has absorbed all this imagery, and then channeled the common patterns into his creative process.