6 February 2012 SERS enhancement of Ag nanoparticle patterns embedded in glass by two-step ion exchange
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Proceedings Volume 8234, Plasmonics in Biology and Medicine IX; 823404 (2012) https://doi.org/10.1117/12.908338
Event: SPIE BiOS, 2012, San Francisco, California, United States
Abstract
Silver nanoparticles embedded in glass are prepared by two different two-step ion exchange methods. In both of these methods, silver ions are introduced into glass in the first silver ion exchange step, but silver ions are reduced into metallic silver using two different second process steps: either post-annealing or subsequent potassium ion exchange. The formed particles are characterized by optical absorption measurements, scanning electron microscopy, transmission electron microscopy and atomic force microscopy. Their application in SERS is demonstrated, and the optimal surface features in terms of SERS enhancement are discussed. With post-annealing, high iron content in glass is needed to achieve high concentration of silver metal nanoclusters. Using double ion exchange, with the second step of potassium ion exchange, reduction of silver ions into metal nanoclusters occurs below aluminium mask. Using such mask, fabrication of silver nanoparticle patterns is also demonstrated.
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Lasse Karvonen, Lasse Karvonen, Ya Chen, Ya Chen, Antti Säynätjoki, Antti Säynätjoki, Ari Tervonen, Ari Tervonen, Seppo Honkanen, Seppo Honkanen, } "SERS enhancement of Ag nanoparticle patterns embedded in glass by two-step ion exchange", Proc. SPIE 8234, Plasmonics in Biology and Medicine IX, 823404 (6 February 2012); doi: 10.1117/12.908338; https://doi.org/10.1117/12.908338
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