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Electrochemical Fabrication and Sensing Application of Multicolored Silver Films
Author(s) -
Li Na,
Yu Linan,
Wei Pingping,
Ji Junyi,
Zhao Jiupeng,
Zhang Qiao,
Li Yao,
Yin Yadong
Publication year - 2018
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201800277
Subject(s) - materials science , plasmon , nanostructure , nanotechnology , fabrication , electrochemistry , nanoparticle , thin film , deposition (geology) , optoelectronics , chemical engineering , electrode , medicine , paleontology , chemistry , alternative medicine , pathology , sediment , engineering , biology
This study demonstrates an electrochemical method for the deposition of Ag nanoparticles with anisotropic quasi‐flat structures on solid substrates to form thin films with tunable plasmonic bands covering the full visible range (from 450 to 780 nm). By manipulating the electrodeposition conditions (such as the concentration of capping ligands and pulse voltage), the size and aspect ratio of the deposited silver nanostructures can be controlled and subsequently their plasmonic bands can be tuned. Unlike the free colloidal nanoparticles that often aggregate when exposed to poor solvents, the electrodeposited Ag nanostructured films adhere strongly to the substrates, allowing for their convenient use as effective sensors for the rapid detection of various solvents and their mixtures based on refractive indices. This work provides a new and robust pathway for the preparation of supported plasmonic nanostructured films with controllable morphology and desirable optical property and stability.