Otto Piene at work

Otto Piene (18 April 1928 – 17 July 2014) was a German artist specializing in kinetic and technology-based art. He lived and worked in Düsseldorf; Cambridge, Massachusetts; and Groton, Massachusetts. Piene and Heinz Mack founded the group ZERO in 1957. This group consisted of artists who wanted to redefine art after World War II.
In the “fire paintings”, he lightly burned a layer of solvent on pigmented paper, developing organic forms from the remnant, or the soot. Throughout the remainder of his career he continued the practice of making “smoke pictures”.
Inspiration for The Hohlraum Pāhoehoe Series