[OPTICAL REVIEW Vol. 21, No. 3 (2014) 339-344]
© 2014 The Japan Society of Applied Physics

Surface-Enhanced Raman Scattering Active Substrates by Liquid Flame Spray Deposited and Inkjet Printed Silver Nanoparticles

Jarkko J. SAARINEN1,4*, Dimitar VALTAKARI1, Janne HAAPANEN2, Turkka SALMINEN3, Jyrki M. Mäkelä2, and Jun UOZUMI4

1Laboratory of Paper Coating and Converting, Center for Functional Materials, Abo Akademi University, Porthansgatan 3, FI-20500 Åbo/Turku, Finland
2Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P. O. Box 692, FI-33101 Tampere, Finland
3Optoelectronics Research Centre, Tampere University of Technology, P. O. Box 692, FI-33101 Tampere, Finland
4Faculty of Engineering, Hokkai-Gakuen University, Sapporo 064-0926, Japan

(Received October 14, 2013; Accepted December 6, 2013)

Surface-enhanced Raman scattering (SERS) active substrates were made via liquid flame spray deposition and inkjet printing of silver nanoparticles. Both processes are suitable for cost-effective fabrication of large-area SERS substrates. Crystal violet (CV) solutions were used as target molecules and in both samples the detection limit was approximately 10 nM. In addition, sintering temperature of the inkjet printed silver nanoparticles was found to have a large effect on the SERS activity with the higher curing temperature of 200 ℃ resulting in contamination layer on silver and cancelation of the SERS signal. This layer was characterized using an X-ray photoelectron spectroscopy (XPS).

Key words: surface-enhanced Raman scattering (SERS), liquid flame spray, inkjet printing, nanoparticles, surface chemistry, nanophotonics

*E-mail address: jarkko.j.saarinen@abo.fi