New article on surface enhanced Raman scattering

Highlight: New article on surface enhanced Raman scattering

Mingliang Jin’s research on developing new substrates for surface enhanced Raman scattering (SERS) has recently been published. The article titled: High-Density Periodic Arrays of Self-Aligned Subwavelength Nanopyramids for Surface Enhanced Raman Spectroscopy, describes novel nanotextured surfaces with periodically self-aligned subwavelength nanogroove and nanopyramid structures with precisely defined pitch l_g that are closely packed with 2 nm separation gaps over large areas and form high density arrays of hot-spot scattering sites ideally suited for SERS and Raman spectroscopy. The simple self-aligning fabrication technique requires only a single lithography step and wet anisotropic etching. Measured average Raman enhancement factors of G~10⁶ from rhodamine 6G (R6G) on patterned Au surfaces with l_g=200 nm are consistent with numerical calculations. The nanostructured surfaces can be scaled to smaller dimensions, which results in increased enhancement as well as increased hot-spot spatial density.

The paper appears in the Journal of Physical Chemistry C: DOI: 10.1021/jp106245a

For more information contact: Edwin Carlen: e.t.carlen@utwente.nl