@patent {1, title = {Pixel Device and Display Using Liquid Ink and Elastomers}, volume = {9335539 B2}, year = {2016}, edition = {United States of America}, chapter = {US}, url = {files/clarke/files/us_patent_9335539_b2_5-10-16.pdf}, author = {Shian, Samuel and David Clark and Roger Diebold} }