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UV SERS at well ordered Pd sphere segment void (SSV) nanostructures.

L Cui¹, S Mahajan, R M Cole

¹State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, Xiamen University, Xiamen 361005, China.

Physical Chemistry Chemical Physics : PCCP

|June 23, 2009

Summary

This summary is machine-generated.

Ultraviolet laser excited surface-enhanced Raman scattering (UV-SERS) was achieved using palladium sphere segment void nanostructures. The observed enhancement correlated with the material's UV plasmon absorption, demonstrating a new SERS substrate.

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Area of Science:

Nanotechnology
Spectroscopy
Materials Science

Background:

Surface-enhanced Raman scattering (SERS) is a powerful analytical technique.
Plasmonic nanostructures are crucial for enhancing SERS signals.
Ultraviolet (UV) SERS is less explored due to material limitations.

Purpose of the Study:

To investigate UV-SERS using novel palladium nanostructures.
To explore the correlation between plasmon resonance and SERS enhancement in the UV region.
To establish palladium sphere segment voids (SSVs) as a viable platform for UV-SERS.

Main Methods:

Fabrication of well-ordered palladium sphere segment void (SSV) nanostructures.
Excitation of SERS using an ultraviolet laser.
Utilizing adenine as a probe molecule.
Characterization of plasmon absorption spectra of Pd SSVs in the UV region.

Main Results:

Achieved UV laser excited SERS for the first time at Pd SSVs.
Observed a strong correlation between UV-SERS enhancement and Pd SSV plasmon absorption in the UV range.
Demonstrated the potential of Pd SSVs for sensitive UV-SERS detection.

Conclusions:

Palladium SSVs are effective substrates for UV-SERS.
UV plasmonic properties of Pd SSVs are key to their SERS performance.
This work opens new avenues for UV-SERS applications in chemical and biological sensing.