title: Programmed colorimetric logic devices based on DNA-gold nanoparticle interactions.
abstract: A system including nucleic acid strands and unmodified gold nanopartcles is activated to perform programmed logic functions, using pH and DNA as inputs and the plasmonic-related color change of gold nanoparticles as the output. The complexity of the logic devices can be simply enhanced by appropriate engineering.
authors.affiliation: National Center for Nanoscience and Technology, Beijing, PR China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Jiang
authors.forename: Zhen-Gang
authors.initials: ZG
authors.lastname: Wang
authors.forename: Baoquan
authors.initials: B
authors.lastname: Ding
mesh_terms: D015374:Biosensing Techniques; D003124:Colorimetry / Q000379:methods*; D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*
chemical_list: D006046:Gold; D004247:DNA