title: Colorimetric logic gates through molecular recognition and plasmonic nanoparticles.
abstract: A colorimetric logic system capable of AND, OR, INHIBIT and AND + OR logic operations is constructed. The principle is modulation of the distance between arginine (lysine)-modified gold nanoparticles via metal ions. A lab-on-chip format for the assembly of versatile logic gates is demonstrated as a proof of concept. These logic gates allow a straightforward readout by the naked eye.
authors.affiliation: Beijing Engineering Research Center for BioNanotechnology & Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
authors.forename: Yunlei
authors.initials: Y
authors.lastname: Xianyu
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Wang
authors.forename: Jiashu
authors.initials: J
authors.lastname: Sun
authors.forename: Xuefei
authors.initials: X
authors.lastname: Wang
authors.forename: Xingyu
authors.initials: X
authors.lastname: Jiang
keywords: amino-acid; colorimetry; gold nanoparticles; logic gates; microfluidics