This study presents the synthesis, SERS properties in three dimensions, and an application of 3D symmetric nanoporous silver microparticles. The particles are synthesized by purely chemical process: controlled precipitation of AgCl to acquire highly symmetric AgCl microparticle, followed by in-place to convert AgCl into nanoporous silver. The particles display highly predictable SERS enhancement pattern in three dimensions, which resembles particle shape and retains symmetry. The highly regular enhancement pattern allows an application in the study of inhomogeneity in two-layer polymer system, by improving spatial resolution in Z axis.
Yukihiro Ozaki, Sanpon Vantasin, Wei Ji, Yoshito Tanaka, Yasutaka Kitahama, Kanet Wongrawee, and Sanong Ekgasit, "3D SERS imaging based on chemically-synthesized highly-symmetric nanoporous silver microparticles," Proc. SPIE 9925, Nanoimaging and Nanospectroscopy IV, 99250O (Presented at SPIE Nanoscience + Engineering: August 29, 2016; Published: 15 September 2016); https://doi.org/10.1117/12.2236274.
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