TY - RPRT TI - Programmable Chemical Gradient Patterns by Soft Grayscale Lithography AU - Bowen, Audrey M. AU - Ritchey, Joshua A. AU - Moore, Jeffrey S. AU - Nuzzo, Ralph G. PY - 2011 DO - 10.1002/smll.201100920 UR - https://www.osti.gov/biblio/1876049 ID - 1876049 ER -