Abstract

This work presents a novel method for fabricating repeatable, uniform, large-area, highly sensitive, surface-enhanced resonance Raman scattering (SERRS) substrates combined with silicon nanopillar arrays and silver nanoparticles. The proposed method consists of two steps: (1) induce periodic ripples in deionized water using a linearly polarized femtosecond laser; and (2) generate dense 80-nm-diameter nanopillar arrays with silver nanoparticles in silver nitrate solution with a 90° rotated polarization, femtosecond double-pulse train. As the pulse delay increases from 0 to 1000 fs, the mean size of the silver nanoparticles reduces, and the average number of nanoparticles increases, which, in turn, increases the enhancement factor of SERRS signals up to 1.1×109. Furthermore, melamine (down to 125 ppb) was detected by the fabricated SERRS substrates.

© 2015 Optical Society of America

Full Article  |  PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription