A gold nanorod-based plasmonic platform for multi-logic operation and detection. (6th December 2018)

• Record Type: Journal Article
• Authors: Li, Tong; Bi, Junmin; Ren, Hang; Ling, Rui; Zhang, Chenling; Wu, Zhenglong; Qin, Weidong; Jiao, Peng
• Is Part Of: Nanotechnology. Volume 30:Number 5(2019)
• Publication Date: 2018-12-06
• Subjects: gold nanorods -- logic gate -- iodine-mediated etching -- morphological change -- colorimetry -- logic detection; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aaf043
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: A multi-logic gate platform was designed based on morphological changes of gold nanorods (AuNRs) resulted from the iodine-mediated etching. By utilizing the anti-etching effects of mercapto compounds and Au-Hg amalgams as well as the etch-promoting effect of Cu 2+, we successfully built five logic gates, namely, AND, NOR, XNOR, YES and IMPLY, along with a three-input combinational logic gate XNOR-IMPLY. The platform was versatile and easy to use, did not require complex surface modification or separation/purification steps as the conventional AuNR-based logic gates did. The logic operations, accompanied by distinct color changes, enabled multi-task detection by naked-eye for 'have' or 'none' discrimination or highly sensitive and selective analysis by spectroscopy with wide linear ranges.