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Updated: May 20, 2026

Surface Enhanced Raman Spectroscopy Detection of Biomolecules Using EBL Fabricated Nanostructured Substrates

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Published on: March 20, 2015

High directivity optical antenna substrates for surface enhanced Raman scattering.

Dongxing Wang¹, Wenqi Zhu, Yizhuo Chu

¹Harvard School of Engineering and Applied Sciences, 33 Oxford Street, Cambridge, MA 02138, USA.

Advanced Materials (Deerfield Beach, Fla.)

|July 5, 2012

Summary

Researchers developed a novel gold optical antenna array. This design significantly boosts surface-enhanced Raman scattering (SERS) signals, achieving enhancement factors up to 1.2 × 10^10.

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Area of Science:

Nanophotonics
Plasmonics
Spectroscopy

Background:

Surface-enhanced Raman scattering (SERS) is a powerful technique for molecular detection.
Existing SERS substrates often face limitations in achieving ultra-high enhancement factors.

Purpose of the Study:

To introduce and fabricate a novel 2D optical antenna array integrated with 1D gold strips and mirrors.
To investigate the SERS performance of the proposed integrated design.

Main Methods:

Fabrication of a two-dimensional array of gold optical antennas.
Integration of a one-dimensional array of gold strips and mirrors with the optical antennas.
Experimental measurement of surface-enhanced Raman scattering enhancement factors.

Main Results:

The integrated design achieved average SERS enhancement factors as high as 1.2 × 10^10.
This represents an improvement of over two orders of magnitude compared to optical antennas without the integrated strips and mirrors.

Conclusions:

The proposed integrated optical antenna array with gold strips and mirrors is highly effective for enhancing SERS signals.
This design offers a promising platform for ultra-sensitive molecular detection applications.