These patterns are expertly fashioned from pieces of worn wood plank and end grain pavers arranged in a variety of patterns from Running Bond to Ashlar to Basket Weave. Butterfield Color, Inc.

Their inkless microcontact printing technique can imprint details measuring close to 1 nanometer, or billionths of a meter, the Duke team reported in the Sept. 24, 2007 issue of the Journal of Organic ...