Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 25, 2016
Previous Article Next Article

Design of broadband SERS substrates by the laser-induced aggregation of gold nanoparticles

Author affiliations


Surface-enhanced Raman scattering (SERS) has already demonstrated its significant potential in analytical science. Thus, current efforts are focused on the development of affordable and reproducible SERS substrates, which exhibit high enhancement factors and uniform responses. A large number of strategies were adopted to produce effective SERS substrates; however, most of them are tuned for the use of single excitation wavelength and consequently can only be applied for a limited number of analytes. Hence, SERS substrates that demonstrate broadband plasmonic properties represent a more flexible analytical tool for multi-wavelength or tunable light sources, especially for biological applications. In the current study, we demonstrate that direct laser writing (DLW), which activates a photoreactive moiety and immobilizes functionalized gold nanoparticles on chemically modified glass substrates, can be used to produce SERS substrates of various sizes and geometries. We show that by tuning the DLW parameters a broad plasmonic response is obtained, enabling the use of these substrates for multi-wavelength SERS analysis. Two Raman reporters, a small synthetic benzotriazole azo organic dye and a larger biological molecule, hemin, are tested at three fixed excitation wavelengths in the visible range (473 nm, 532 nm and 660 nm). SERS enhancement factors show a weak dependence on the wavelength used and the molecules investigated; moreover, the possibility of creating arbitrary shaped and uniform structures is demonstrated. The reported results show that DLW is an excellent technique to engineer microstructured and broadband SERS substrates.

Graphical abstract: Design of broadband SERS substrates by the laser-induced aggregation of gold nanoparticles

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Dec 2015, accepted on 30 May 2016 and first published on 01 Jun 2016

Article type: Paper
DOI: 10.1039/C5TC04286K
Citation: J. Mater. Chem. C, 2016,4, 6152-6159

  •   Request permissions

    Design of broadband SERS substrates by the laser-induced aggregation of gold nanoparticles

    D. Naumenko, L. Stolzer, A. S. Quick, D. Abt, M. Wegener, C. Barner-Kowollik, S. D. Zilio, B. Marmiroli, H. Amenitsch, L. Fruk and M. Lazzarino, J. Mater. Chem. C, 2016, 4, 6152
    DOI: 10.1039/C5TC04286K

Search articles by author